Arthropoda Selecta 14 (1): 33–88 © ARTHROPODA SELECTA, 2005

Linyphiid of the (Arachnida: Aranei)

Ïàóêè-ëèíèôèèäû Çàïàäíî-Ñèáèðñêîé ðàâíèíû (Arachnida: Aranei)

A.V. Tanasevitch À.Â. Òàíàñåâè÷

Center for Forest Ecology and Productivity Russian Academy of Science, Profsoyuznaya str., 84/32, Moscow 117997 Russia. Öåíòð ïî ïðîáëåìàì ýêîëîãèè è ïðîäóêòèâíîñòè ëåñîâ ÐÀÍ, Ïðîôñîþçíàÿ óë., 84/32, Ìîñêâà 117997 Ðîññèÿ.

KEY WORDS: Spiders, , West Siberia, faunistics, distribution. ÊËÞ×ÅÂÛÅ ÑËÎÂÀ: Ïàóêè, Linyphiidae, Çàïàäíàÿ Ñèáèðü, ôàóíèñòèêà, ðàñïðîñòðàíåíèå.

ABSTRACT. A check-list of 159 species of the [1996], which concerned the fauna of the Yugansky family Linyphiidae collected in the boreal part Nature Reserve. He provided there a detailed list of 88 of the West Siberian Plain, Russia is compiled. One linyphiid species, considering also all the synonymies species, Carorita paludosa Duffey, 1971, is new to the and misidentifications known to that time. The present Russian fauna, further 56 are new to the West Siberian study nearly twice augments the fauna. list. Faunistic data and the distribution pattern of each of the species are documented. All previous records of Region, material and methods Agyneta saxatilis (Blackwall, 1844) in Siberia, the Urals and the Caucasus are shown to actually concern A. This study is based on the extensive collections mossica (Schikora, 1993). made recently by Alexander B. Ryvkin (Moscow) in the Yugansky Nature Reserve, in the Surgutskiy Nature ÐÅÇÞÌÅ. Äëÿ áîðåàëüíîé ÷àñòè Çàïàäíî- Refuge and in the environs of the Tobolsk Field Re- Ñèáèðñêîé ðàâíèíû ïðèâåäåí ñïèñîê èç 159 âèäîâ search Station. These collections are provided with ïàóêîâ ñåìåéñòâà Linyphiidae. Îäèí âèä — Carorita most detailed descriptions of the floristic background, paludosa Duffey, 1971 — âïåðâûå îòìå÷åí äëÿ thus being highly valuable for ecological purposes. In ôàóíû Ðîññèè, 56 âèäî⠗ äëÿ ôàóíû Çàïàäíîé addition, a small material taken Tyumen by an un- Ñèáèðè. Äàíû òî÷êè íàõîäîê âèäîâ è èõ known collector, as well as the author’s own large ðàñïðîñòðàíåíèå. Óñòàíîâëåíî, ÷òî âñå ïðåæíèå collections from various parts of the West Siberian íàõîäêè Agyneta saxatilis (Blackwall, 1844) â Ñèáèðè, Plain (Noyabrsk, Samotlor, Nefteyugansk, Luginetsky, íà Óðàëå è íà Êàâêàçå îòíîñÿòñÿ ê âèäó A. mossica Tomsk) have been incorporated. Detailed information (Schikora, 1993). concerning the localities and habitats is presented be- low. They cover most of the West Siberian Plain which, Introduction in turn, covers most of West Siberia, except for the Yamal and Gydan peninsulas. The West Siberian Plain is one of the globe’s larg- Except for the territories lying south of the study est accumulative lowlands, ranging from the shores of region, all other adjacent regions appear to be fairly the Kara Sea in the North to the steppes of well prospected as regards the linyphiid spider faunas. in the South, and from the Urals in the West to Yenisey Thus, the lists of the southern Yamal Peninsula in the River in the East. Even though West Siberia is the most North [Esyunin & Efimik, 1996], of the Urals in the heavily populated, and thus most accessible, part of West [Esyunin & Efimik, 1996], and of the middle Siberia, this territory yet is perhaps the worst prospect- flow part of Yenisey River in the East [Eskov, 1988; ed among the larger regions of northern Asia as to its Rybalov at al., 2001] appear to be quite complete. fauna of the Linyphiidae, and of the spiders as a whole. The West Siberian Plain lies completely within the Paradoxically, but for the first time numerous highly boreal belt, or zone, to cover all of its three subzones, widespread or pan-Siberian species have become re- i.e. the northern, the middle, and the southern taiga. In corded in West Siberia with this publication. contrast to the European Plain, however, because of The first, as well as the latest, major paper concern- intense relief formation due to a highly dense river ing the spiders of West Siberia is that by Esyunin network over the West Siberian Plain the typical zonal 34 A.V. Tanasevitch landscapes on sufficiently well drained interfluves fail to occupy large territories. Most of it is taken up by swamps, wet meadows, poorly drained, waterlogged coniferous or mixed woodlands, by other kinds of slumpy environments. Such formations overrun 2/3 the total area, the central part of the West Siberian Plain being termed a woody swampland zone. The forest vegetation is dominated there by pinewoods (25% of the forested areas) and secondary birch stands (23%). The humid dark taiga of Pinus sibirica, Abies sibirica and Picea obovata is only minor [Gvozdetsky, 1987]. Hardwood trees are nearly absent, except for residual Tilia cordata groves. In general the central parts of the West Siberian Plain free from water or swamplands are represented by a patchwork of relatively small and diverse small- leaved and/or coniferous forests at various succession- al stages. Such a mosaic is maintained due to frequent fires and regular fellings. In the “Distribution” sections below, the term West Siberian Plain is replaced by West Siberia, this being quite acceptable for the physiographical reasons men- Map 1. Collecting localities in West Siberia: 1 — Noyabrsk, tioned above. Dubious records are denoted with ques- 2 — Surgutskiy Nature Refuge, 3 — Samotlor, 4 — Nefteyu- tion marks, (?). gansk, 5 — Ugut, 6 — Yuganskiy Nature Reserve, 7 — Tobolsk Field Research Station, 8 — Luginetsky, 9 — Tomsk, 10 — Tyumen. Asterisk marks mean cities. Description of the collecting localities Êàðòà 1. Òî÷êè ñáîðîâ â Çàïàäíîé Ñèáèðè: 1 — Íîÿáðüñêèé, 2 — Ñóðãóòñêèé çàêàçíèê, 3 — Ñàìîòëîð, 4 — Íåôòåþãàíñê, 5 — Óãóò, 6 — Þãàíñêèé çàïîâåäíèê, 7 — 1. Tyumen Area, Yamalo-Nenets Autonomous Re- Òîáîëüñêàÿ áèîëîãè÷åñêàÿ ñòàíöèÿ, 8 — Ëóãèíåöêèé, 9 — gion, near Noyabrsk [1], 75°24’E, 63°09’N, August Òîìñê, 10 — Òþìåíü. Çâåçäî÷êàìè îòìå÷åíû êðóïíûå ãîðîäà. 2000, leg. Andrei V. Tanasevitch. 2. Tyumen Area, Khanty-Mansi Autonomous Re- 10. Tyumen Area, Tyumen [10], 65°33’E, 57°08’N, gion, Surgutskiy Nature Refuge [2], 73°18’E, 61°17’N, VI.2000, collector unknown (U). August 2000, leg. Alexander B. Ryvkin. All the localities are mapped under their respective 3. Tyumen Area, Khanty-Mansi Autonomous Re- number (Map 1.). gion, Nizhnevartovsky District, near Samotlor [3], All material is temporarily housed in the personal 76°55’E, 61°05’N, August 1999, leg.Andrei V. Ta- collection of A. Tanasevitch, but later it will be shared nasevitch. with the collection of the Zoological Museum of the 4. Tyumen Area, Khanty-Mansi Autonomous Re- Moscow State University, Moscow. gion, Surgutskiy District, near Nefteyugansk [4], ABBREVIATIONS. The following abbreviations 72°35’E, 61°05’N, August 2001, leg. Andrei V. Ta- have been used in the text: A.R. — Alexander B. nasevitch. Ryvkin; A.T. — Andrei V. Tanasevitch, U — un- 5. Tyumen Area, Khanty-Mansi Autonomous Re- known collector; Prov. — Province. gion, Surgutskiy District, near Ugut [5], 74°02’E, 60°31’N, July-September 1998 & 2001–2002, leg. Al- exander B. Ryvkin. Check-list of linyphiid spiders 6. Tyumen Area, Khanty-Mansi Autonomous Re- gion, Surgutskiy District, Yuganskiy Nature Reserve Abacoproeces saltuum (L. Koch, 1872) [6], 74°39’E, 59°45’N (center of the reserve), July- August 1998–2003, leg. Alexander B. Ryvkin. MATERIAL. 2 $$, near S border of buffer area of Yuganskiy 7. Tyumen Area, Uvatskiy District, near Gornos- Reserve, Koimlor (Krimlor) Lake. Litter under Picea obovata and Pinus sibirica with Lycopodium sp., Linnaea borealis, ferns, Gramine- linkino, environs of Tobolsk Field Research Station [7] ae, Trientalis europaea, sparse Ledum palustre etc., in moist forest of the Severtsov Institute of Ecology and Evolution, near lake shore, 02.IX.2001, leg. A.R.; 1 $, Tobolsk Field Research Russian Academy of Sciences, 68°32’E, 58°44’N, Sep- Station, flood-plain swamp near left bank of River: Carex tember–October 2003, leg. Alexander B. Ryvkin. spp., Comarum palustre , Salix sp., Climacium dendroides, small 8. Tomsk Area, ca. 60 êì NW of Pudino, near true mosses, Lemna sp. etc., 09.VI.2004, leg. A.R. DISTRIBUTION. Widespread in Europe, known from Luginetsky Camp [8], 78°52’E, 58°10’N, August 1998, the Urals and eastern Kazakhstan; in Siberia this species has leg. Andrei V. Tanasevitch. hitherto been known in the mountains of South Siberia: 9. Tomsk Area, near Tomsk [9], 85°11’E, 56°34’N, Altai Mts, Tuva and the Lake Baikal region. This is the first August 1998, leg. Andrei V. Tanasevitch. record in West Siberia. Linyphiid spiders of the West Siberian Plain 35

Abiskoa abiskoensis (Holm, 1945) DISTRIBUTION. Europe, in Siberia from the Urals east- ward to Yenisey River. The record of Agyneta decora in 1996 Lepthyphantes abiscoensis (sic!), Esyunin, Ekosistemy Mongolia is a misidentification. This is the first record in Srednego Priob’ya, 1, 1, p. 70. West Siberia.

MATERIAL. 3 ##, 12 $$, Luginetsky, Abies & Picea forest, Agyneta levii Tanasevitch, 1984 logs, under bark, 22–28.VIII.1998, leg. A.T. 2 ##, 3 $$, Samotlor, Pinus forest, in moss and lichen, MATERIAL. 1 #, Yuganskiy Reserve, Malyi Yugan River Aug. 1999, leg. A.T.; 1 #, 2 $$, Populus forest, under Ledum, in Basin, 3–5 km SW of cordon at Kol-Kotchen-Yagun River, moss, Aug. 1999, leg. A.T. near lake. Moss and litter at lake shore (on cape near hut): DISTRIBUTION. From Fennoscandia (whence it has Padus , Salix, young Populus tremula, sedge and graminoid been described), via the tundra and northern taiga to the tussocks, Comarum palustre, Equisetum spp., ?Aulacomnium sp. Urals; in Siberia known from the Urals to Cisokhotia, Kam- et al., 11.IX.1999, leg. A.R.; 2 ##, 1 $, Malyi Yugan River chatka and Sakhalin; through the mountains of South Sibe- Basin, 3–5 km SW of cordon at Kol-Kotchen-Yagun River, ria via the Lake Baikal region eastward to the southern part near lake. Moss and litter under Pinus sibirica , Picea , Betula, of Khabarovsk Prov.; recorded also in . Pinus sylvestris with Vaccinium myrtillus, V. vitis-idaea, Lycopo- dium, Equisetum sylvaticum, Rosa sp., Pleurozium schreberi on gentle slope, 20.IX.1999, leg. A.R. Agyneta affinis (Kulczynski, 1898) 1 #, Tyumen, VI.2000, leg. U. DISTRIBUTION. Widespread all over Siberia, in the MATERIAL. 3 ##, 2 $$, Yuganskiy Reserve, Nyogus’yakh mountains of South Siberia known from Altai Mts, Tuva and River Basin near Petchpan’yakh River mouth. Mosses and litter Sayan. in swampy flood-plain forest, between Betula , Abies sibirica, Picea obovata, Salix sp., Pinus sibirica etc.: tussocks of Carex spp., Agyneta mossica (Schikora, 1993) Filipendula ulmaria, Gramineae, Comarum palustre, Menyanthes trifoliata , Plagiomnium sp., Aulacomnium sp., Climacium den- droides etc., 12.IX.2000, leg. A.R. 1996 Agyneta mollis, Esyunin, Ekosistemy Srednego Priob’ya, 1 #, Tyumen, VI.2000, leg. U. 1, p. 69, revised by Esyunin, pers. comm. NOTE. This species is still often referred to as Agyneta 1996 Agyneta saxatilis, Esyunin, Ekosistemy Srednego beata (O. Pickard-Cambridge, 1906), although this name Priob’ya, 1, p. 69, revised by Esyunin, pers. comm. has long been synonymised with A. affinis [see Wunderlich, MATERIAL. 1 $, Yuganskiy Reserve, Nyogus’yakh River, 1973]. cordon Bisarkina. Moss and litter on swamp amid flood plain DISTRIBUTION. Widespread in Europe, known in the forest near foot of slope: Menyanthes trifoliata, Equisetum spp., Caucasus and the Urals; all Siberia from the Urals to north- Sphagnum squarrosum (sparse), Sph. ?centrale , Sph. spp., Nar- ern Cisokhotia, the mountains of South Siberia, the Lake dosmia frigida , Carex spp., Gramineae , Salix sp., Comarum Baikal region, Sakhalin. Known also from China. This is the palustre, Filipendula ulmaria, ?Tomenthypnum sp., Plagiomnium first record in West Siberia. sp. etc., 27.VII.1998, leg. A.R.; 1 $, near Vuya-Yany River mouth. Moss and litter at border of open swamp with Carex spp., ?Eriophorum sp., Comarum palustre , Equisetum sp., Sphagnum Agyneta allosubtilis Loksa, 1965 ?girgensohnii , Sph . squarrosum , Maianthemum bifolium, sparse Betula etc., 15.VIII.1998, leg. A.R.; 2 ##, Malyi Yugan River 1996 Agyneta subtilis, Esyunin, Ekosistemy Srednego Priob’ya, Basin, 3–5 km SW of cordon at Kol-Kotchen-Yagun River, 1, p. 69, not revised, material lost (Esyunin, pers. ñomm.). near lake. Mosses and sparse spots of litter near shore of lake: Sphagnum ?girgensohnii, Sph. spp., Comarum palustre, Gramine- MATERIAL. 3 ##, Tyumen, VI.2000, leg. U. ae, Carex ?globularis, Oxycoccus sp., sparse young Betula and DISTRIBUTION. This species is very closely related to Padus, 23.IX.1999, leg. A.R.; 2 ##, Malyi Yugan River Basin, Agyneta subtilis and replaces it all over Siberia from the 3–5 km SW of cordon at Kol-Kotchen-Yagun River, near lake. Urals to Chukotka; Cisokhotia, Kamchatka; from eastern Mosses on swamp near N shore of lake: Sphagnum spp., Carex spp., Eriophorum sp., Chamaedaphne calyculata , Andromeda Kazakhstan via the mountains of South Siberia eastward to polifolia, Oxycoccus spp., Vaccinium uliginosum et al., 17.IX.1999, the Lake Baikal region. Known also from the southern part leg. A.R.; 1 #, Nyogus’yakh River Basin near Petchpan’yakh of Khabarovsk Prov. River mouth. Mosses and litter on large swamp: Carex spp., Comarum palustre , Equisetum sp., Eriophorum sp., Gramineae, Agyneta conigera (O. Pickard-Cambridge, 1863) Rumex sp., ?Aulacomnium sp., Plagiomnium sp., Ptilium crista- castrensis , Sphagnum sp., Chamaenerium angustifolium , Betula and Salix sp. etc.,13.IX.2000, leg. A.R.; 1 #, Bolshoy Yugan River, MATERIAL. 1 #, Tyumen, VI.2000, leg. U. 6–7 km below Sugmuten’yakh River mouth. Mosses and litter DISTRIBUTION. Europe, the Caucasus and eastern Ka- between sedges and Gramineae on swamped winter road with zakhstan. In Siberia ranging from the Urals eastward to East Carex spp., Calamagrostis sp., Sphagnum girgensohnii , Sph. spp. Siberia; in the mountains of South Siberia known from Altai etc., and on the plot without Sphagnum spp., 21.VIII.2001, leg. Mts, Tuva and the Lake Baikal region; registered from Mon- A.R.; 1 $, near S border of buffer area of Yuganskiy Reserve, golia. This is the first record in West Siberia. Kolynlor Lake. Lake shore: Carex spp., Gramineae, Sphagnum spp. etc., 29.VIII.2001, leg. A.R.; 4 ##, near S border of buffer area of Yuganskiy Reserve, Kolynlor Lake. Mosses and litter Agyneta decora (O. Pickard-Cambridge, 1870) under Betula, Pinus sylvestris and Pinus sibirica in swamped forest near W shore of lake and between Carex spp. with Sphagnum MATERIAL. 1 #, Tobolsk Field Research Station, in litter girgensohnii at the lake shore, 01.IX.2001, leg. A.R.; 1 #, Ay- under Pinus sibirica, Abies sibirica, Populus tremula, with under- Magromsy River Basin, Medvezhyi Ugol cordon, sweeping on growth of Tilia cordata, Diplazium sibiricum, Equisetum sylvati- Carex rostrata, C. spp., mosses and litter at swamp border: Carex cum, Maianthemum bifolium, Oxalis acetosella etc., 10.VI.2004, rostrata , Sphagnum girgensohnii , Sph. spp. etc., among sparse leg. A.R. young birches, (+7C°), 15.IX.2002, leg. A.R.; 1 #, Malyi Yugan 36 A.V. Tanasevitch

River, cordon below Lyarykni River mouth, open swamp with leg. A.R.; 20 ## & $$, Kol-Kotchen-Yagun River Basin tussocks of Carex spp. and Calamagrostis sp. with Comarum (confluent of Malyi Yugan River), lake near cordon. Swampy palustre, Salix sp., Sphagnum squarrosum, Sph. spp., ?Aulacomnium birch-wilow sparse forest by SE shore of lake: tussocks of Carex sp. etc., between sparse young Betula, 17.VIII.2003, leg. A.R. spp. with a touch of Calamagrostis sp., Comarum palustre, NOTE. All records of A. saxatilis in the Urals and Sibe- Sphagnum squarrosum, Sph . centrale, Sph. spp. etc., as well as ria are indeed A. mossica. mosses and litter between those, 20.IX.2001, leg. A.R.; 1 $, DISTRIBUTION. Known in Europe. In the Caucasus Yuganskiy Reserve (buffer zone), flood-plain of a rill (conflu- [Tanasevitch, 1987, 1990] and the Urals [Esyunin & Efimik, ent of Malyi Yugan River) near Achimovy-2 village: tussocks of 1996] recorded as A. saxatilis (material revised); east of the Carex spp. and Poaceae, depressions with Carex rostrata, Fil- ipendula ulmaria , Comarum palustre , Urtica dioica , Sphagnum Urals up to Yenisey River. centrale, Climacium dendroides, Plagiomnium sp., Rubus saxatilis, Salix sp., sparse Betula and Picea, 24.VIII.2003, leg. A.R. Agyneta ramosa Jackson, 1912 15 ##, 18 $$, Tomsk, Abies forest, in moss and litter, 15– 16.VIII.1998, leg. A.T. MATERIAL. 2 ##, 4 $$, Tobolsk Field Research Station, DISTRIBUTION. Northern Europe, the Caucasus, east- in litter under Pinus sibirica , Tilia cordata , Betula , Populus ern Kazakhstan, the mountains of Middle Asia; all over tremula , Picea obovata , Abies sibirica with Carex globularis, Siberia from the Urals eastward up to Kamchatka and the Stellaria sp., Maianthemum bifolium , Lathyrus sp., Equisetum Kurile Islands; through the mountains of South Siberia via sylvaticum, Pyrola sp. etc., on slope, 06.VI.2004, leg. A.R. the Lake Baikal region eastward to Khabarovsk Prov.; known DISTRIBUTION. Europe, the Caucasus, the Urals and also from Mongolia. In the Nearctic, it occurs from Alaska West Siberia. This is the first record in West Siberia. to Manitoba.

Agyneta rurestris (C.L. Koch, 1836) Allomengea vidua (L. Koch, 1879)

1996 Agyneta rurestris, Esyunin, Ekosistemy Srednego 1992 Allomengea warburtoni, Esyunin & Novokshnov, Trudy Priob’ya, 1, p. 69, not revised, material lost (Esyuni, pers. ñomm.). Zool. Inst. AN SSSR. Vol. 226, p. 116. 1996 Allomengea vidua, Esyunin, Ekosistemy Srednego MATERIAL. 1 #, Tyumen, VI.2000, leg. U. Priob’ya, 1, p. 69. DISTRIBUTION. Europe, the Caucasus, Urals, West MATERIAL. 1 #, 1 $, Yuganskiy Reserve, near Vuya-Yany Siberia. The record of Agyneta rurestris in Turkmenistan River mouth. Moss and litter at hummocks at bank of old [Tanasevitch & Fet, 1986] actually belongs to A. mesasiati- channel with Carex spp., Comarum palustre, Filipendula ulmaria, ca (material revised). All the other records of Agyneta rure- Gramineae, Plagiomnium sp. etc., 12.VIII.1998, leg. A.R.; 1 #, stris in Asia, i.e. Mongolia, China and Korea, are misidenti- Bolshoy Yugan River, near cordon Kamennyi. Shore of small fications. flood-plain lake: Carex spp., Gramineae, Comarum palustre, Filipendula ulmaria, Salix sp., Ribes sp., Rosa sp. etc., 19.VIII.1999, Allomengea scopigera (Grube, 1859) leg. A.R.; 2 ##, 4 $$, Malyi Yugan River Basin, 3–5 km SW of cordon at Kol-Kotchen-Yagun River, near lake. Moss and litter at lake shore (on cape near hut): Padus, Salix, young Populus 1996 Allomengea scopigera, Esyunin, Ekosistemy Srednego tremula, sedge and graminoid tussocks, Comarum palustre, Equi- Priob’ya, 1, p. 69. setum spp., ?Aulacomnium sp. et al., 11.IX.1999, leg. A.R.; 1 #, 2 $$, Malyi Yugan River Basin, Kol-Kotchen-Yagun River, 3–4 MATERIAL. 1 $, Yuganskiy Reserve, near Vuya-Yany River km S of cordon. Moss and litter at river bank: Padus, Salix sp., mouth. Moss and litter at hummocks at bank of old channel Spiraea spp., Filipendula ulmaria, Ribes nigrum, Gallium sp., Carex with Carex spp., Comarum palustre, Filipendula ulmaria, Gramine- spp., Gramineae, Equisetum spp., ?Aulacomnium sp., Plagiomnium ae, Plagiomnium sp. etc., 12.VIII.1998, leg. A.R.; 1 #, 4 $$, sp., Climacium dendroides et al., 13.IX.1999, leg. A.R.; 1 $, Malyi Nyogus’yakh River, cordon Bisarkina. Mosses and litter in Yugan River Basin, Kol-Kotchen-Yagun River, 1 km S of cordon. flood-plane forest and at natural levee with Abies, Picea, Pinus Mosses and litter on small sedge-mossy swamp near river bank: sibirica, Betula, Oxalis, Equisetum sylvaticum, Eq. pratense, Ma- Carex spp., Sphagnum ?girgensohnii, Sph. ?riparium, Plagiomnium ianthemum , Trientalis , Linnaea , Hylocomium splendens , Pleuro- sp. et al., 24.IX.1999, leg. A.R.; 5 $$, Nyogus’yakh River near zium schreberi , Sphagnum sp. (girgensohnii or russowii) etc., Kogontchina-2 field research station. Swampy bank of old river 24.VII.1998, leg. A.R.; 30 ## & $$, Nyogus’yakh River, cordon channel: Carex hummocks, Gramineae, Filipendula ulmaria, Co- Bisarkina. Tussocks with Carex spp., Gramineae, Filipendula marum palustre , Padus , Rosa sp., Salix sp., true mosses etc., ulmaria, Plagiomnium sp., Tomenthypnum sp. etc., at flood-plain 01.IX.2000, leg. A.R.; 2 $$, Nyogus’yakh River Basin near lake shore, 30.VII.1998, leg. A.R.; 3 $$, Malyi Yugan River Petchpan’yakh River mouth, N shore of great lake. Mosses, litter, Basin, 3–5 km SW of cordon at Kol-Kotchen-Yagun River, shaking off from grass: Carex spp., Gramineae, Comarum palus- near lake. Moss and litter at lake shore: sedge tussocks, tre, Salix sp., ?Aulacomnium sp., Plagiomnium sp. etc., 08.IX.2000, Gramineae, Comarum palustre, Spiraea sp. et al., 30.VIII.1999, leg. A.R.; 1 $, Nyogus’yakh River Basin near Petchpan’yakh River leg. A.R.; 20 ## & $$, Vuya-Yany River near Ay-Vuya-Yany mouth. Mosses and litter on large swamp: Carex spp., Comarum River mouth. Clay river banks near mouth of small left palustre , Equisetum sp., Eriophorum sp., Gramineae, Rumex sp., confluent (500 ## lower of field research station): Carex spp., ?Aulacomnium sp., Plagiomnium sp., Ptilium crista-castrensis, Sph- Gramineae, Mentha sp., ?Trollius sp. etc., 25.VIII.2000, leg. A.R.; agnum sp., Chamaenerium angustifolium, Betula and Salix sp. etc., 3 ##, 1 $, Nyogus’yakh River near Kogontchina-2 field 13.IX.2000, leg. A.R.; 20 ## & $$, Nyogus’yakh River near research station. River banks near rill mouths: Carex sp., Kogontchina-2 field research station. River bank: Carex sp. and Gramineae, Filipendula ulmaria, Salix sp., Padus etc., 03.IX.2000, Gramineae. 30.VIII.2000, leg. A.R.; 2 $$, Bolshoy Yugan River, leg. A.R.; 1 $, Nyogus’yakh River near Kogontchina-2 field 6–7 km below Sugmuten’yakh River mouth. Bank of old research station. Clayish river bank: Carex spp., Equisetum sp., channel: tussocks with Carex spp., Gramineae, small admixture Gramineae, Mentha sp. etc., (shaking off sedges and Gramine- of Filipendula ulmaria between sparse Salix sp. and Betula, ae), 07.IX.2000, leg. A.R.; 3 ##, 2 $$, Bolshoy Yugan River, 6– 17.VIII.2001, leg. A.R.; 3 $$, Bolshoy Yugan River, 6–7 km 7 km below Sugmuten’yakh River mouth. Bank of old channel: below Sugmuten’yakh River mouth. Mosses and litter between tussocks with Carex spp., Gramineae, small admixture of Fil- sedges and Gramineae on swamped winter road with Carex spp., ipendula ulmaria between sparse Salix sp. and Betula, 17.VIII.2001, Calamagrostis sp., Sphagnum girgensohnii, Sph. spp. etc., 20.VIII.2001, Linyphiid spiders of the West Siberian Plain 37 leg. A.R.; 2 ##, Bolshoy Yugan River, 6–7 km below litter under Pinus sylvestris , P . sibirica , Betula with Ledum Sugmuten’yakh River mouth. Mosses and litter between sedges palustre , Vaccinium vitis-idaea , V. myrtillus , Carex globularis, and Gramineae on swamped winter road with Carex spp., Hylocomium splendens, Pleurozium schreberi, Polytrichum com- Calamagrostis sp., Sphagnum girgensohnii, Sph. spp. etc., and on mune, P. strictum, Dicranum sp., Linnaea borealis etc., 19.IX.2001, the plot without Sphagnum spp., 21.VIII.2001, leg. A.R.; 1 $, Kol- leg. A.R. Kotchen-Yagun River (confluent of Malyi Yugan River) NE of 3 ##, Luginetsky, Picea, Abies & Betula forest, in moss, cordon. River bank with Carex spp., Gramineae, Filipendula 26.VIII.1998, leg. A.T. ulmaria , Urtica dioica , Spiraea sp. etc., 23.IX.2001, leg. A.R.; 2 4 ##, 2 $$, Nefteyugansk, mixed forests: Abies , Pinus ##, 1 $, Malyi Yugan River, cordon below Lyarykni River sibirica, Picea, Betula with Equisetum, Vaccinium spp., Empetrum, mouth, open swamp with tussocks of Carex spp. and Calama- mosses, VIII.2001, leg. A.T. grostis sp. with Comarum palustre, Salix sp., Sphagnum squarro- DISTRIBUTION. Widespread all over Siberia from the Urals sum , Sph. spp., ?Aulacomnium sp. etc., between sparse young eastward to East Siberia (except Chukotka), known in Kamchatka, Betula, 17.VIII.2003, leg. A.R.; 1 #, Malyi Yugan River, cordon the Kurile Islands, Sakhalin; through the mountains of South Sibe- below Lyarykni River mouth, open swamp with tussocks of ria via the Lake Baikal region eastward to Khabarovsk Prov., Carex spp. and Calamagrostis sp. with Comarum palustre, Salix known also from Mongolia. sp., Sphagnum squarrosum, Sph. spp., ?Aulacomnium sp. etc., between sparse young Betula, 22.VIII.2003, leg. A.R. Anguliphantes sibiricus (Tanasevitch, 1986) 5 ##, 7 $$, Surgutskiy Refuge, ’ River Basin, right bank of Materikovyi Pasl Channel. Lake shore: Carex spp., Comarum palustre, Lamiaceae, Climacium, Plagiomnium sp. etc., 10.VIII.2000, MATERIAL. 1 $, Tomsk, Abies forest, in moss and litter, leg. A.R. 15–16.VIII.1998, leg. A.T. 5 ##, 14 $$, Noyabrsky, Salix bushes along brook, litter, DISTRIBUTION. This species has hitherto been known 15.VIII.2000, leg. A.T. from the middle flow region of Yenisey River and from the 1 $, Tobolsk Field Research Station, flood-plain swamps of mountains of South Siberia: Altai, Tuva and Western Sayan. left bank of Irtysh River with Salix sp., Betula, Carex spp., This is the first record in West Siberia. Comarum palustre, Climacium dendroides, Aulacomnium palus- tre , Sphagnum girgensohnii , Sph. ?russowii , Sph . centrale , Sph. squarrosum etc., 27.IX.2003, leg. A.R. Aphileta misera (O. Pickard-Cambridge, 1882) DISTRIBUTION. Widespread in Europe, in Siberia known from the Urals eastward to Yenisey River, recorded MATERIAL. 1 #, Yuganskiy Reserve, Bolshoy Yugan River, in Mongolia. In the Nearctic, from Alberta to Quebec. 6–7 km below Sugmuten’yakh River mouth. Mosses and litter between sedges and Gramineae on swamped winter road with Carex spp., Calamagrostis sp., Sphagnum girgensohnii, Sph. spp. Anguliphantes angulipalpis (Westring, 1851) etc., 20.VIII.2001, leg. A.R.; 1 #, 1 $, Bolshoy Yugan River, 6– 7 km below Sugmuten’yakh River mouth. Mosses and litter MATERIAL. 2 $$, Tobolsk Field Research Station, mosses between sedges and Gramineae on swamped winter road with and litter under Pinus sylvestris, P . sibirica, Picea, young Abies Carex spp., Calamagrostis sp., Sphagnum girgensohnii, Sph. spp. with Ledum palustre, Vaccinium vitis-idaea, V. myrtillus, Poaceae, etc., and on the plot without Sphagnum spp., 21.VIII.2001, leg. Carex globularis, Linnaea borealis, Pleurozium schreberi, Hyloco- A.R.; 1 #, near S border of buffer area of Yuganskiy Reserve, mium splendens , Dicranum polysetum etc., on upper part of Kolynlor Lake. Lake shore: Carex spp., Gramineae, Sphagnum slope, 02.X.2003, leg. A.R.; 1 #, 1 $, in litter under Pinus spp. etc., 29.VIII.2001, leg. A.R.; 1 #, Ay-Magromsy River Basin, sibirica, Picea, Betula, Abies, Tilia, Populus tremula with Lonicera Medvezhyi Ugol cordon, mosses and litter at swamp border: sp., Carex globularis, Oxalis acetosella, Pyrola sp., Delphinium sp., Carex rostrata , Sphagnum girgensohnii , Sph. spp. etc., among Lathyrus sp., Equisetum sylvaticum etc., on slope, 20.IX.2003, leg. sparse young birches, 11.IX.2002, leg. A.R.; 2 ##, Ay-Magrom- A.R.; 1 $, in litter under Pinus sibirica , Tilia cordata , Betula, sy River Basin, Medvezhyi Ugol cordon, sweeping on Carex Populus tremula, Picea obovata, Abies sibirica with Carex globu- rostrata , C. spp., Gramineae, Eriophorum sp. etc., mosses and laris, Stellaria sp., Maianthemum bifolium, Lathyrus sp., Equise- litter at border of sedge-mossy swamp (including rill source): tum sylvaticum, Pyrola sp. etc., on slope, 06.VI.2004, leg. A.R.; 1 Carex rostrata, C. spp., Sphagnum girgensohnii, Sph. spp., Equise- #, mosses and litter under Betula, Pinus sibirica, Alnus, Abies, tum spp., Oxycoccus spp., Chamaedaphne calyculata, Comarum Tilia cordata with Carex globularis, Oxalis acetosella , Stellaria palustre , Calamagrostis sp., Menyanthes trifoliata etc., among sp., Linnaea borealis , Delphinium sp., Maianthemum bifolium, sparse young birches, 19.IX.2002, leg. A.R.; 1 #, Ay-Magromsy Pyrola sp., Rubus saxatilis, sparse Pleurozium schreberi etc., on River Basin, Medvezhyi Ugol cordon, mosses and litter near gentle slope near Varpak River, 05.VI.2004, leg. A.R. rill: Plagiomnium sp., Sphagnum squarrosum, Sph. centrale, Sph. DISTRIBUTION. Widespread in Europe, known in the girgensohnii, Sph. warnstorfii, Calamagrostis sp., Carex sp. among Urals and eastern Kazakhstan. This is the first record in sparse Salix sp. and birches, (+6 C?), 27.IX.2002, leg. A.R.; 1 #, Siberia. Ay-Magromsy River Basin, Medvezhyi Ugol cordon, mosses and litter near rill: Plagiomnium sp., Sphagnum squarrosum , Sph. centrale , Sph . girgensohnii , Sph . warnstorfii , Calamagrostis sp., Anguliphantes dybowskii (O. Pickard-Cambridge, Carex sp. among sparse Salix sp. and birches, (+3 C?), 28.IX.2002, 1873) leg. A.R.; 3 ##, Malyi Yugan River, cordon below Lyarykni River mouth, open swamp with tussocks of Carex spp. and 1996 Lepthyphantes dybowskii, Esyunin, Ekosistemy Sred- Calamagrostis sp. with Comarum palustre, Salix sp., Sphagnum nego Priob’ya, 1, p. 70. squarrosum , Sph. spp., ?Aulacomnium sp. etc., between sparse young Betula, 17.VIII.2003, leg. A.R. MATERIAL. 2 $$, near S border of buffer area of Yugan- DISTRIBUTION. Pan-Holarctic, but in Russia this spe- skiy Reserve, rill between Kolynlor Lake and Koimlor (Krim- cies has only been recorded in the Urals, Middle Siberia and lor) Lake. Mosses and litter under Pinus sibirica in forest at the Cisokhotia. This is the first record in West Siberia. rill bank: Lycopodium sp., ferns, Linnaea borealis , Vaccinium vitis-idaea, Orthilia secunda, Pleurozium schreberi, Hylocomium splendens , Dicranum sp., Polytrichum sp., Calamagrostis sp., Araeoncus crassiceps (Westring, 1861) sparse Ledum palustre etc., 04.IX.2001, leg. A.R.; 1 #, Kol- Kotchen-Yagun River Basin (confluent of Malyi Yugan River), MATERIAL. 3 ##, near S border of buffer area of lake near cordon. Overgrown mesotrophic swamp: mosses and Yuganskiy Reserve, Koimlor (Krimlor) Lake. Mosses and litter 38 A.V. Tanasevitch in tussocks between sparse Betula and Salix sp. near lake shore: 1 $, Yuganskiy Reserve, Nyogus’yakh River, cordon Bisarki- Carex spp., Gramineae, Sphagnum squarrosum , Sph . centrale, na. Moss and litter at swamp amid flood-plain forest near foot Sph . girgensohnii , Comarum palustre, sparse Equisetum sp., of slope: Menyanthes trifoliata , Equisetum sp., Sphagnum spp., 02.IX.2001, leg. A.R.; 2 ##, Kol-Kotchen-Yagun River Basin Comarum palustre , Filipendula ulmaria, ?Tomenthypnum sp., (confluent of Malyi Yugan River), lake near cordon. Tussocks Plagiomnium sp. etc., with sparse Betula, Picea , Abies , Pinus with Carex spp., Calamagrostis sp., Comarum palustre between sibirica, 25.VII.1998, leg. A.R.; 1 $, near Vuya-Yany River sparse Betula and Pinus sylvestris at NW shore of lake: Sphag- mouth. Moss and litter at hummocks at bank of old channel num centrale , Sph . girgensohnii , Sph. ?aongstroemii , Sph. spp., with Carex spp., Comarum palustre, Filipendula ulmaria, Gramine- Climacium dendroides, Plagiomnium sp., Salix sp., Spiraea sp. etc., ae, Plagiomnium sp. etc., 12.VIII.1998, leg. A.R.; 2 ##, 1 $, 17.IX.2001, leg. A.R.; 1 #, 1 $, Malyi Yugan River, cordon Nyogus’yakh River, cordon Bisarkina. Tussocks with Carex spp., below Lyarykni River mouth, open swamp with tussocks of Gramineae, Filipendula ulmaria , Plagiomnium sp., Tomenthyp- Carex spp. and Calamagrostis sp. with Comarum palustre, Salix num sp. etc., at flood-plain lake shore, 30.X.1998, leg. A.R.; 1 #, sp., Sphagnum squarrosum , Sph. spp., ?Aulacomnium sp. etc., Vuya-Yany River near Ay-Vuya-Yany River mouth. Clay river between sparse young Betula, 17.VIII.2003, leg. A.R. banks near mouth of small left confluent (500 m lower of field 2 $$, Tobolsk Field Research Station, mosses and litter research station): Carex spp., Gramineae, Mentha sp., ?Trollius among Carex spp. and Poaceae with Plagiomnium sp. etc., on sp. etc., 25.VIII.2000, leg. A.R.; 2 $$, Nyogus’yakh River near swampy forest road, 24.IX.2003, leg. A.R. Kogontchina-2 field research station. River banks near rill DISTRIBUTION. Widespread in Europe, known in mouths: Carex sp., Gramineae, Filipendula ulmaria , Salix sp., Northern Africa, the Urals, West and Middle Siberia. The Padus etc., 03.IX.2000, leg. A.R.; 1 #, Nyogus’yakh River Basin record of this species in Tuva is a misidentification and near Petchpan’yakh River mouth. Mosses and litter on large actually refers to an undescribed species. This is the first swamp: Carex spp., Comarum palustre, Equisetum sp., Eriophorum record in West Siberia. sp., Gramineae, Rumex sp., ?Aulacomnium sp., Plagiomnium sp., Ptilium crista-castrensis, Sphagnum sp., Chamaenerium angustifoli- um, sparse Betula & Salix sp., spots of dwarf birch on hummocks Araeoncus vorkutensis Tanasevitch, 1984 etc., 11.IX.2000, leg. A.R.; 1 #, 3 $$, Nyogus’yakh River Basin near Petchpan’yakh River mouth. Mosses and litter on large MATERIAL. 20 ## & $$, Yuganskiy Reserve, Vuya-Yany swamp: Carex spp., Comarum palustre, Equisetum sp., Eriopho- River near Ay-Vuya-Yany River mouth. Flood-plain depression: rum sp., Gramineae, Rumex sp., ?Aulacomnium sp., Plagiomnium Filipendula ulmaria , Carex sp., Gramineae, Spiraea sp., Ribes sp., Ptilium crista-castrensis , Sphagnum sp., Chamaenerium an- nigrum, Comarum palustre, Sphagnum squarrosum, Sph. girgensoh- gustifolium, Betula and Salix sp. etc., 13.IX.2000, leg. A.R.; 1 $, nii, Climacium dendroides, Aulacomnium sp., Plagiomnium sp. etc., near S border of buffer area of Yuganskiy Reserve, Kolynlor 24.VIII.2000, leg. A.R.; 25 ## & $$, Ay-Magromsy River Basin, Lake. Lake shore: Carex spp., Gramineae, Sphagnum spp. etc., Medvezhyi Ugol cordon, mosses and litter at rill bank and on 29.VIII.2001, leg. A.R.; 2 ##, 1 $, near S border of buffer area flood-plain of rill: Calamagrostis sp., Ribes spp., Rosa sp., Filipen- of Yuganskiy Reserve, Kolynlor Lake. Mosses and litter under dula ulmaria , Matteuccia struthiopteris , Equisetum sylvaticum, Betula, Pinus sylvestris and Pinus sibirica in swamped forest near Sphagnum squarrosum , Sph . girgensohnii , Sph. spp., Plagiomnium W shore of lake and between Carex spp. with Sphagnum sp. etc., 20.IX.2002, leg. A.R.; 1 $, Malyi Yugan River, near cordon girgensohnii at the lake shore, 01.IX.2001, leg. A.R.; 1 $, near S below Maalyakh River mouth, mosses and litter in forest with border of buffer area of Yuganskiy Reserve, Kolynlor Lake. Pinus sibirica , P . sylvestris , Picea , Betula , Populus tremula , Abies, Lake shore: Carex spp., Gramineae, Sphagnum girgensohnii, Sph. Equisetum sylvaticum, Linnaea borealis, Vaccinium vitis-idaea, V. squarrosum, Sph. spp. sparse Betula, Salix sp. etc., 04.IX.2001, leg. myrtillus , Carex globularis , Pleurozium schreberi , Hylocomium A.R.; 1 $, near S border of buffer area of Yuganskiy Reserve, splendens, Polytrichum commune, sparse spots of Sphagnum gir- Kolynlor Lake. Mosses and litter by lake shore: Carex spp., gensohnii and Ledum palustre, 20.VIII.2003, leg. A.R. Gramineae, Sphagnum girgensohnii , Sph . squarrosum , Sph. spp. Ca. 50 ## & $$, Tomsk, Abies forest, moss and litter, 15– sparse Betula, Salix sp. etc., 05.IX.2001, leg. A.R.; 3 $$, Kol- 16.VIII.1998, leg. A.T. Kotchen-Yagun River (confluent of Malyi Yugan River) E of DISTRIBUTION. Widespread all over Siberia, includ- cordon. Loamy river bank with Carex spp., Gramineae, Equise- ing the mountains of South Siberia: Altai Mts, Tuva and tum spp., small Rosa sp. & Salix sp. etc., 16.IX.2001, leg. A.R.; 4 Sayan. This is the first record in West Siberia. ##, Malyi Yugan River, cordon below Lyarykni River mouth, open swamp with tussocks of Carex spp. and Calamagrostis sp. with Comarum palustre, Salix sp., Sphagnum squarrosum , Sph. Bathylinyphia major (Kulczynski, 1885) spp., ?Aulacomnium sp. etc., between sparse young Betula, 17.VIII.2003, leg. A.R.; 1 #, Malyi Yugan River, cordon below MATERIAL. 2 ##, 3 $$, Yuganskiy Reserve, Malyi Yugan Lyarykni River mouth, dried open sedge swamp: Carex spp. and River, near cordon below Maalyakh River mouth, mosses and Calamagrostis sp. (channel of temporary stream), 17.VIII.2003, litter on swamp with Sphagnum magellanicum , Sph. ?balticum, leg. A.R. Sph. fuscum, Sph. spp., Carex sp., Eriophorum sp., Chamaedaphne 1 $, Tobolsk Field Research Station, mosses and litter and calyculata , Ledum palustre , Andromeda polifolia , Oxycoccus sp., in sweeping on small swamp with Carex spp., Poaceae, Sphag- sparse Pinus sylvestris etc., and in sweeping, 20.VIII.2003, leg. A.R. num girgensohnii , Sph . squarrosum , Sph. ?riparium , Sph. ?balti- DISTRIBUTION. This species has hitherto been known cum, Sph. centrale etc., 20.IX.2003, leg. A.R.; 1 #, 3 $$, mosses from East Siberia, Cisokhotia, Kamchatka, through the moun- and litter and in sweeping on small swamp with Carex spp., tains of South Siberia via the Lake Baikal region eastward to Poaceae, Sphagnum girgensohnii, Sph. squarrosum, Sph. ?riparium, Khabarovsk and Maritime provinces. Known also from Chi- Sph. ?balticum, Sph . centrale etc., 21.IX.2003, leg. A.R.; 3 ##, na, and Korea. This is the first record in West Siberia. mosses and litter among sparse Salix spp., Betula, Pinus sylves- tris with tussocks of Carex spp., Poaceae, Lythrum sp., Filipen- dula ulmaria, Climacium dendroides, isolated spots of Sphagnum Bathyphantes approximatus (O. Pickard-Cam- squarrosum, Sph. sp. etc., on swamped flood-plain of left bank bridge, 1871) of Irtysh River, 29.IX.2003, leg. A.R. 1 #, Samotlor, bank of River, Salix bushes, litter, MATERIAL. 1 $, near Ugut, Ugutka River Basin. Mosses Aug. 1999, leg. A.T. and litter at forest with Pinus sylvestris, Betula, Ledum palustre, DISTRIBUTION. Widespread in Europe, known from Vaccinium myrtillus , V. vitis-idea , Dicranum sp., Pleurozium the Urals, while in Siberia this species has hitherto been schreberi , Hylocomium splendens, underwood of Pinus sibirica reported only from the middle flow region of Yenisey River. etc., 11.VII.1998, leg. A.R. This is the first record in West Siberia. Linyphiid spiders of the West Siberian Plain 39

Bathyphantes gracilis (Blackwall, 1841) and Calamagrostis sp. with Comarum palustre, Salix sp., Sphag- num squarrosum , Sph. spp., ?Aulacomnium sp. etc., between MATERIAL. 1 #, 2 $$, Yuganskiy Reserve, Nyogus’yakh sparse young Betula, 22.VIII.2003, leg. A.R.; 2 ##, 1 $, River, cordon Bisarkina. Tussocks with Carex spp., Gramineae, Yuganskiy Reserve (buffer zone), flood-plain of a rill (conflu- Filipendula ulmaria, Plagiomnium sp., Tomenthypnum sp. etc., at ent of Malyi Yugan River) near Achimovy-2 village: tussocks of flood-plain lake shore, 30.VII.1998, leg. A.R.; 1 $, Nyogus’yakh Carex spp. and Poaceae, depressions with Carex rostrata, Fil- River near Kogontchina-2 field research station. Swampy bank ipendula ulmaria , Comarum palustre , Urtica dioica , Sphagnum of old river channel: Carex hummocks, Gramineae, Filipendula centrale, Climacium dendroides, Plagiomnium sp., Rubus saxatilis, ulmaria , Comarum palustre , Padus , Rosa sp., Salix sp., true Salix sp., sparse Betula and Picea, 24.VIII.2003, leg. A.R. mosses etc., 01.IX.2000, leg. A.R.; 1 $, Nyogus’yakh River near 1 $, Tobolsk Field Research Station, flood-plain swamps of Kogontchina-2 field research station. River banks near rill left bank of Irtysh River with Salix sp., Betula , Carex spp., mouths: Carex sp., Gramineae, Filipendula ulmaria , Salix sp., Comarum palustre, Climacium dendroides, Aulacomnium palus- Padus etc., 03.IX.2000, leg. A.R.; 3 $$, Nyogus’yakh River Basin tre , Sphagnum girgensohnii , Sph. ?russowii , Sph . centrale , Sph. near Petchpan’yakh River mouth. Mosses and litter on large squarrosum etc., 27.IX.2003, leg. A.R.; 6 $$, mosses and litter swamp: Carex spp., Comarum palustre, Equisetum sp., Eriopho- and in sweeping on small swamp with Carex spp., Poaceae, rum sp., Gramineae, Rumex sp., ?Aulacomnium sp., Plagiomnium Sphagnum girgensohnii , Sph . squarrosum , Sph. ?riparium , Sph. sp., Ptilium crista-castrensis , Sphagnum sp., Chamaenerium an- ?balticum, Sph. centrale etc., 21.IX.2003, leg. A.R.; 1 #, 1 $, steep gustifolium, sparse Betula & Salix sp., spots of dwarf birch on right bank of Irtysh River up-stream of Tobolsk Field Research hummocks etc., 11.IX.2000, leg. A.R.; 1 $, Nyogus’yakh River Station, small mosses and litter among Tussilago farfara on clay Basin near Petchpan’yakh River mouth. Mosses and litter on and loam, 14.IX.2003, leg. A.R.; 3 ##, 1 $, Tobolsk Field large swamp: Carex spp., Comarum palustre , Equisetum sp., Research Station, in litter under Salix sp. with Poaceae, Carex Eriophorum sp., Gramineae, Rumex sp., ?Aulacomnium sp., Plagi- sp., Filipendula ulmaria, Lamiaceae etc., 26.IX.2003, leg. A.R.; 2 omnium sp., Ptilium crista-castrensis, Sphagnum sp., Chamaeneri- ##, 4 $$, flood-plain of left bank of Irtysh River, swampy um angustifolium, Betula and Salix sp. etc., 13.IX.2000, leg. A.R.; shore of Letneye Lake: Carex spp., Comarum palustre, Scirpus 1 $, Vuya-Yany River near Ay-Vuya-Yany River mouth. Flood- sp., mosses, 01.X.2003, leg. A.R.; 4 $$, mosses and litter among plain lake shore: young Betula and Populus tremula, Carex spp., sparse Salix spp., Betula, Pinus sylvestris with tussocks of Carex Filipendula ulmaria, Gramineae, Sphagnum girgensohnii , Aula- spp., Poaceae, Lythrum sp., Filipendula ulmaria, Climacium den- comnium sp., Climacium dendroides , Comarum palustre, droides, isolated spots of Sphagnum squarrosum, Sph. sp. etc., on 23.VIII.2000, leg. A.R.; 2 $$, Nyogus’yakh River Basin near swamped flood-plain of left bank of Irtysh River, 29.IX.2003, Petchpan’yakh River mouth. Mosses and litter in swampy leg. A.R.; 2 $$, among Carex spp. on flood-plain of Varpak flood-plain forest, between Betula, Abies sibirica, Picea obovata, River, 25.IX.2003, leg. A.R. Salix sp., Pinus sibirica etc.: tussocks of Carex spp., Filipendula 1 $, Luginetsky, Abies, Picea, Betula forest, in moss, VIII.1998, ulmaria, Gramineae, Comarum palustre , Menyanthes trifoliata, leg. A.T. Plagiomnium sp., Aulacomnium sp., Climacium dendroides etc., DISTRIBUTION. Throughout the Palaearctic and north- 12.IX.2000, leg. A.R.; 1 $, Bolshoy Yugan River, 6–7 km below ern Nearctic. This is the first record in West Siberia. Sugmuten’yakh River mouth. Bank of old channel: tussocks with Carex spp., Gramineae, small admixture of Filipendula Bathyphantes nigrinus (Westring, 1851) ulmaria between sparse Salix sp. and Betula, 17.VIII.2001, leg. A.R.; 2 $$, near S border of buffer area of Yuganskiy Reserve, Kolynlor Lake. Mosses and litter by lake shore: Carex spp., 1996 Bathyphantes nigrinus, Esyunin, Ekosistemy Srednego Gramineae, Sphagnum girgensohnii , Sph . squarrosum , Sph. spp. Priob’ya, 1, p. 69. sparse Betula, Salix sp. etc., 05.IX.2001, leg. A.R.; 1 #, Kol- Kotchen-Yagun River Basin (confluent of Malyi Yugan River), MATERIAL. 1 $, Yuganskiy Reserve, Nyogus’yakh River, lake near cordon. Tussocks with Carex spp., Calamagrostis sp., cordon Bisarkina. River bank: mosses and litter under Salix Comarum palustre between sparse Betula and Pinus sylvestris at spp., Padus, Matteuccia struthiopteris, Filipendula ulmaria, Urtica NW shore of lake: Sphagnum centrale , Sph . girgensohnii , Sph. dioica etc., 29.VII.1998, leg. A.R.; 1 #, 2 $$, Vuya-Yany River ?aongstroemii, Sph. spp., Climacium dendroides, Plagiomnium sp., near Ay-Vuya-Yany River mouth. Swamped flood-plain of left Salix sp., Spiraea sp. etc., 17.IX.2001, leg. A.R.; 4 $$, Kol- river bank: Carex spp., Comarum palustre, Filipendula ulmaria, Kotchen-Yagun River Basin (confluent of Malyi Yugan River), Spiraea sp., Ribes nigrum, Sphagnum squarrosum, Sph. ?girgensoh- lake near cordon. Swampy birch-wilow sparse forest by SE nii , Plagiomnium sp., Aulacomnium sp. etc., 27.VIII.2000, leg. shore of lake: tussocks of Carex spp. with a touch of Calama- A.R.; 3 $$, Nyogus’yakh River Basin near Petchpan’yakh River grostis sp., Comarum palustre, Sphagnum squarrosum, Sph. cen- mouth. Mosses and litter in swampy flood-plain forest, between trale, Sph. spp. etc., as well as mosses and litter between those, Betula, Abies sibirica, Picea obovata, Salix sp., Pinus sibirica etc.: 20.IX.2001, leg. A.R.; 2 $$, Kol-Kotchen-Yagun River Basin tussocks of Carex spp., Filipendula ulmaria, Gramineae, Comar- (confluent of Malyi Yugan River), lake near cordon. Isolated um palustre, Menyanthes trifoliata, Plagiomnium sp., Aulacomni- tussocks of Carex spp. and Gramineae between sparse birch um sp., Climacium dendroides etc., 12.IX.2000, leg. A.R. wood with Padus and Salix sp. at lake shore, (+3C?), 29.IX.2001, 1 $, Tobolsk Field Research Station, small swamp with leg. A.R.; 1 $, Ay-Magromsy River Basin, Medvezhyi Ugol Carex sp. and Salix sp. amid birch forest on high flood-plain of cordon, sweeping on Carex rostrata, C. spp., mosses and litter at left bank of Irtysh River, 30.IX.2003, leg. A.R.; 1 $, in mosses swamp border: Carex rostrata, Sphagnum girgensohnii, Sph. spp. and litter under Betula , Picea , Alnus with Pyrola sp., Carex etc., among sparse young birches, (+7 C?), 15.IX.2002, leg. A.R.; globularis, Poaceae, Equisetum sylvaticum, Linnaea borealis, Pleu- 1 #, 2 $$, Ay-Magromsy River Basin, Medvezhyi Ugol cordon, rozium schreberi, Dicranum polysetum, Oxalis acetosella, Galli- mosses and litter at southern border of sedge-mossy swamp: um sp., Aegopodium podagraria, Rubus idaeus, R. saxatilis etc., on Carex rostrata , C. spp., Comarum palustre , Equisetum spp., slope (from foot to top), 28.IX.2003, leg. A.R. Sphagnum girgensohnii, Sph. spp., Plagiomnium sp., Aulacomnium DISTRIBUTION. Europe, in Siberia known from the sp., Calamagrostis sp., Menyanthes trifoliata etc., among sparse Urals to Yenisey River, recorded in the Altai Mts, South young birches, (+7C?), 23.IX.2002, leg. A.R.; 1 #, 4 $$, Malyi Siberia. Yugan River, cordon below Lyarykni River mouth, open swamp with tussocks of Carex spp. and Calamagrostis sp. with Comar- um palustre, Salix sp., Sphagnum squarrosum, Sph. spp., ?Aula- Bathyphantes parvulus (Westring, 1851) comnium sp. etc., between sparse young Betula, 17.VIII.2003, leg. A.R.; 6 ##, 1 $, Malyi Yugan River, cordon below MATERIAL. 1 $, Tobolsk Field Research Station, mosses Lyarykni River mouth, open swamp with tussocks of Carex spp. and litter and in sweeping on small swamp with Carex spp., 40 A.V. Tanasevitch

Poaceae, Sphagnum girgensohnii, Sph. squarrosum, Sph. ?riparium, Bathyphantes simillimus (L. Koch, 1879) Sph. ?balticum, Sph. centrale etc., 10.VI.2004, leg. A.R. 1 $, Tyumen, VI.2000, leg. U. 1996 Bathyphantes eumenis, Esyunin, Ekosistemy Srednego DISTRIBUTION. Europe, in Siberia known from the Priob’ya, 1, p. 69. Urals eastward to Yenisey River, recorded in the Lake Baikal region. Known also from China. This is the first record in MATERIAL. 2 $$, Yuganskiy Reserve, Vuya-Yany River West Siberia. near Ay-Vuya-Yany River mouth. Flood-plain depression: Fil- ipendula ulmaria , Carex sp., Gramineae, Spiraea sp., Ribes ni- Bathyphantes reprobus (Kulczynski, 1916) grum, Comarum palustre, Sphagnum squarrosum, Sph. girgensoh- nii , Climacium dendroides , Aulacomnium sp., Plagiomnium sp. etc., 24.VIII.2000, leg. A.R.; 4 $$, Kol-Kotchen-Yagun River MATERIAL. 1 #, Tyumen, VI.2000, leg. U. Basin (confluent of Malyi Yugan River), lake near cordon. DISTRIBUTION. Fennoscandia, European tundra; in Swampy birch-willow sparse forest by SE shore of lake: tussocks Siberia from the Urals to Chukotka, through the mountains of Carex spp. with a touch of Calamagrostis sp., Comarum of South Siberia via the Lake Baikal region eastward to palustre, Sphagnum squarrosum, Sph. centrale, Sph. spp. etc., as Khabarovsk and Maritime provinces. well as mosses and litter between those, 20.IX.2001, leg. A.R.; 2 $$, Ay-Magromsy River Basin, Medvezhyi Ugol cordon, mosses Bathyphantes setiger F.O. Pickard-Cambridge, 1894 and litter at rill bank and on flood-plain of rill: Calamagrostis sp., Ribes spp., Rosa sp., Filipendula ulmaria, Matteuccia struthi- opteris , Equisetum sylvaticum , Sphagnum squarrosum , Sph . gir- 1996 Bathyphantes setiger, Esyunin, Ekosistemy Srednego gensohnii, Sph. spp., Plagiomnium sp. etc., 20.IX.2002, leg. A.R. Priob’ya, 1, p. 69. 8 $$, Tomsk, Abies forest, in moss and litter, 15–16.VIII.1998, leg. A.T. MATERIAL. 1 #, 2 $$, Surgutskiy Refuge, Ob’ River Basin, 2 $$, Tyumen, VI.2000, leg. U. right bank of Materikovyi Pasl Channel. Lake shore: Carex spp., NOTE. This species is extremely close to B. eumenis (L. Comarum palustre, Lamiaceae, Climacium, Plagiomnium sp. etc., Koch, 1879). The latter species occurs in northeastern Sibe- 10.VIII.2000, leg. A.R. ria, still very often being confused with B. simillimus. 1 $, Yuganskiy Reserve, Malyi Yugan River Basin, 3–5 km SW of cordon at Kol-Kotchen-Yagun River, near lake. Mosses DISTRIBUTION. Northern Europe; in Siberia known and sparse spots of litter near shore of lake: Sphagnum ?girgen- from the Urals eastward to Yenisey River, through the moun- sohnii, Sph. spp., Comarum palustre, Gramineae, Carex ?globu- tains of South Siberia via the Lake Baikal region eastward to laris, Oxycoccus sp., sparse young Betula and Padus, 23.IX.1999, the southern part of Khabarovsk Prov.; registered also in leg. A.R.; 1 $, Nyogus’yakh River near Kogontchina-2 field China. Kamchatka (?), Kurile Islands (?), Sakhalin (?). research station. Clayish river bank: Carex spp., Equisetum sp., Gramineae, Mentha sp. etc., (shaking off sedges and Gramine- ae), 07.IX.2000, leg. A.R.; 4 ##, 1 $, Malyi Yugan River, cordon Bolephthyphantes index (Thorell, 1856) below Lyarykni River mouth, open swamp with tussocks of Carex spp. and Calamagrostis sp. with Comarum palustre, Salix 1996 Bolyphantes index, Esyunin, Ekosistemy Srednego sp., Sphagnum squarrosum , Sph. spp., ?Aulacomnium sp. etc., Priob’ya, 1, p. 69. between sparse young Betula, 17.VIII.2003, leg. A.R.; 2 ##, 1 $, Malyi Yugan River, near cordon below Maalyakh River mouth, MATERIAL. 1 #, Yuganskiy Reserve, Bolshoy Yugan River, on ground and in sweeping at river bank: sand, clay, Carex near cordon Kamennyi. Moss and litter in pine forest: Pinus spp., Poaceae, Equisetum sp., Vicia sp., Veronica longifolia, etc., sylvestris, young Pinus sibirica, Ledum palustre, Vaccinium vitis- 19.VIII.2003, leg. A.R. idaea , V. myrtillus , Linnaea borealis , Hylocomium splendens, 1 #, 2 $$, Tobolsk Field Research Station, mosses and Pleurozium schreberi, Dicranum sp., Polytrichum commune etc., litter and in sweeping on small swamp with Carex spp., 20.VIII.1999, leg. A.R.; 2 $$, Kol-Kotchen-Yagun River Basin Poaceae, Sphagnum girgensohnii, Sph. squarrosum, Sph. ?riparium, (confluent of Malyi Yugan River), lake near cordon. Mosses Sph. ?balticum , Sph . centrale etc., 20.IX.2003, leg. A.R.; 3 $$, and litter in Pinus -Ledum-Sphagnum sparse forest with sparse mosses and litter and in sweeping on small swamp with Carex Betula, Chamaedaphne calyculata , Oxycoccus sp., Rubus spp., Poaceae, Sphagnum girgensohnii , Sph . squarrosum , Sph. chamaemorus , Eriophorum sp., Sphagnum magellanicum , Sph. ?riparium, Sph. ?balticum, Sph. centrale etc., 21.IX.2003, leg. A.R.; spp., 18.IX.2001, leg. A.R. 1 $, gentle sandy left bank of Irtysh River with clayish spots: DISTRIBUTION. Northern Europe, eastern Kazakhstan, among Equisetum sp. 15.IX.2003, leg. A.R.; 1 #, 1 $, flood-plain in Siberia known from the Urals eastward to East Siberia of Missiinka River near mouth, sweeping on Carex spp., (excluding Chukotka), Cisokhotia, mountains of South Si- Comarum palustre , Mentha sp., Lythrum sp., Stachys sp. etc., beria (Tuva and Sayan); China. 18.IX.2003, leg. A.R.; 2 ##, 3 $$, flood-plain of left bank of Irtysh River, swampy shore of Letneye Lake: Carex spp., Comar- um palustre , Scirpus sp., mosses, 01.X.2003, leg. A.R.; 5 ##, Bolyphantes alticeps (Sundevall, 1832) mosses and litter among sparse Salix spp., Betula, Pinus sylves- tris with tussocks of Carex spp., Poaceae, Lythrum sp., Filipen- 1996 Bolyphantes alticeps, Esyunin, Ekosistemy Srednego dula ulmaria, Climacium dendroides, isolated spots of Sphagnum Priob’ya, 1, p. 69. squarrosum, Sph. sp. etc., on swamped flood-plain of left bank of Irtysh River, 29.IX.2003, leg. A.R.; 1 $, among Carex spp. on MATERIAL. 3 ##, Yuganskiy Reserve, Malyi Yugan River flood-plain of Varpak River, 25.IX.2003, leg. A.R.; 2 ##, 6 $$, Basin, 3–5 km SW of cordon at Kol-Kotchen-Yagun River, 9-10 km S of Gornoslinkino, steep right bank of Irtysh River near lake. Moss and litter in pine forest with Betula, Pinus below Tobolsk Field Research Station, mosses and litter among sibirica, Ledum, Chamaedaphne calyculata, Vaccinium vitis-idaea, sparse Tussilago farfara on clay and loam, 04.X.2003, leg. A.R. DISTRIBUTION. Widespread over Europe, in Siberia Sphagnum spp., Pleurozium schreberi, Dicranum sp., Polytrichum commune (here and there) et al., 14.IX.1999, leg. A.R.; 1 #, known from the Urals to Chukotka, Kamchatka, Cisokhotia, Vuya-Yany River near Ay-Vuya-Yany River mouth. Clay river the Kurile Islands, Sakhalin; in the mountains of South banks near mouth of small left confluent (500 m lower of field Siberia recorded in Tuva, Sayan and the Lake Baikal region, research station): Carex spp., Gramineae, Mentha sp., ?Trollius known also in Khabarovsk and Maritime provinces. sp. etc., 25.VIII.2000, leg. A.R. Linyphiid spiders of the West Siberian Plain 41

1 $, Luginetsky, Picea & Betula forest, in moss, 28.VIII.1998, Sphagnum ?riparium , Sph. ?girgensohnii , Polytrichum commune, leg. A.T. Filipendula ulmaria, Gramineae, Veratrum , Linnaea , Maianthe- 1 #, 1 $, Samotlor, Betula forest, glade, in grass, Aug. 1999, mum , Trientalis , Tomenthypnum sp., Plagiomnium sp. etc.), leg. A.T. 31.X.1998, leg. A.R.; 2 ##, 3 $$, Nyogus’yakh River, cordon 1 #, Tomsk, Abies forest, in moss and litter, 15–16.VIII.1998, Bisarkina. Mosses and litter on slope near parched rill about leg. A.T. cordon: Abies, Picea, Betula, Sorbus, Hylocomium splendens, Pleu- DISTRIBUTION. Throughout the Palaearctic. rozium schreberi, Ptilium, Maianthemum, Trientalis, Linnaea, Eq- uisetum sylvaticum, Polytrichum commune, Oxalis etc., 31.X.1998, Carorita limnaea (Crosby et Bishop, 1927) leg. A.R.; 3 ##, 2 $$, Malyi Yugan River Basin, 3–5 km SW of cordon at Kol-Kotchen-Yagun River, near lake. Moss and litter under Betula in swampy pine-birch light forest with Picea, MATERIAL. 1 #, 2 $$, Luginetsky, Picea, Abies & Betula young Pinus sibirica, Pleurozium schreberi, Sphagnum spp., Vac- forest, in moss, 26.VIII.1998, leg. A.T. cinium myrtillus, V. vitis-idaea, Ledum, Chamaedaphne calycula- DISTRIBUTION. Europe, widespread over Siberia from ta , Equisetum sylvaticum. 09.IX.1999, leg. A.R.; 2 ##, Malyi the Urals to Cisokhotia and the Kurile Islands; through the Yugan River Basin, 3–5 km SW of cordon at Kol-Kotchen- mountains of South Siberia eastward to the southern part of Yagun River, near lake. Moss and litter in pine forest with Khabarovsk Prov., Maritime Prov.; Mongolia, China. Wide- Betula, Pinus sibirica, Ledum, Chamaedaphne calyculata, Vaccin- spread in the Nearctic. ium vitis-idaea, Sphagnum spp., Pleurozium schreberi, Dicranum sp., Polytrichum commune (here and there) et al., 14.IX.1999, Carorita paludosa Duffey, 1971 leg. A.R.; 2 ##, 1 $, Nyogus’yakh River near Kogontchina-2 field research station. Mosses and litter on swamp with Pinus sylvestris , Betula , Ledum palustre , Andromeda polifolia, MATERIAL. 3 $$, Yuganskiy Reserve, Kol-Kotchen-Yagun Chamaedaphne calyculata , Vaccinium uliginosum , Eriophorum River Basin (confluent of Malyi Yugan River), lake near sp., Oxycoccus palustris, Sphagnum fuscum, Sph . magellanicum, cordon. Swampy birch-wilow sparse forest by SE shore of lake: Sph. ?angustifolium , Sph. spp., Rubus chamaemorus etc., tussocks of Carex spp. with a touch of Calamagrostis sp., 31.VIII.2000, leg. A.R.; 1 $, Vuya-Yany River Basin near Ay- Comarum palustre , Sphagnum squarrosum , Sph . centrale , Sph. Vuya-Yany River mouth (2 km E of cordon). Mosses and litter spp. etc., as well as mosses and litter between those, 20.IX.2001, under Picea obovata, Pinus sibirica, P. sylvestris, Betula on flood- leg. A.R.; 1 #, 1 $, Kol-Kotchen-Yagun River Basin (confluent plain of rill with Pleurozium schreberi, Hylocomium splendens, of Malyi Yugan River), lake near cordon. Mosses and litter by Sphagnum girgensohnii, Polytrichum commune, Equisetum sylvat- NE shore of lake: spp., tussocks of Carex spp., Calamagrostis sp., icum, Carex ?globularis, Linnaea borealis, Vaccinium vitis-idaea, Sphagnum squarrosum (?aongstroemii), Sph . centrale, Sph. ?gir- Oxalis acetosella etc., 21.VIII.2000, leg. A.R.; 1 $, Vuya-Yany gensohnii, Sph. russowii between sparse birch wood with isolat- River near Ay-Vuya-Yany River mouth. Mosses and litter on ed Pinus sylvestris, 30.IX.2001, leg. A.R. swamp: Pinus sylvestris , Ledum palustre , Andromeda polifolia, DISTRIBUTION. Known from Western Europe, West Chamaedaphne calyculata , Oxycoccus spp., Sphagnum magel- Siberia. This is a species new to the Russian fauna, also the lanicum, Sph. ?angustifolium, Eriophorum sp. etc., 27.VIII.2000, first record in Siberia. leg. A.R.; 2 $$, Nyogus’yakh River near Kogontchina-2 field research station. River bank: Carex sp. and Gramineae, Centromerus arcanus (O. Pickard-Cambridge, 30.VIII.2000, leg. A.R.; 4 ##, 3 $$, Bolshoy Yugan River, 6–7 km below Sugmuten’yakh River mouth. Mosses and litter on 1873) overgrown swamp and swamped winter road with Pinus sylves- tris, Betula, Chamaedaphne, Ledum, Eriophorum sp., Sphagnum 1996 Centromerus arcanus, Esyunin, Ekosistemy Srednego fuscum, Sph. magellanicum, Sph. ?balticum, Sph. spp., Oxycoccus Priob’ya, 1, p. 70. sp., Vaccinium uliginosum, Pleurozium schreberi etc., 20.VIII.2001, leg. A.R.; 2 $$, near S border of buffer area of Yuganskiy MATERIAL. 4 $$, Surgutskiy Refuge, Ob’ River Basin, Reserve, Kolynlor Lake. Mosses and litter under Pinus sylvestris Materikovyi Pasl Channel. Mosses and litter on bog near glade: and Betula with young Pinus sibirica in swamped forest near tussocks with Carex ?globularis , Sphagnum ?girgensohnii , Sph. SW shore of lake: Pleurozium schreberi, Dicranum spp., Sphag- spp., Linnaea borealis , Equisetum sylvaticum , Vaccinium vitis- num girgensohnii, Sph. ?russowii, Sph. spp., Rubus arcticus, sparse idaea, Ledum palustre, 06.VIII.2000, leg. A.R. Ledum palustre and Oxycoccus sp. etc., 01.IX.2001, leg. A.R.; 1 $, 2 ##, 2 $$, near Ugut, Kynyaminskoye Lake. Mosses and near S border of buffer area of Yuganskiy Reserve, Kolynlor litter at swamp edge with Carex spp., Gramineae, Juncus sp., Lake. Mosses and litter under Pinus sylvestris , Betula , Pinus Salix sp., Polytrichum commune, Sphagnum spp. etc., near lake sibirica with Pleurozium schreberi, Ledum palustre etc., between shore, 06.VIII.2002, leg. A.R.; 2 ##, 5 $$, near Ugut, Ugutka hummocks of Sphagnum spp. near the lake, 05.IX.2001, leg. A.R.; River Basin. Mosses and litter at overgrown swamp with 3 $$, Kol-Kotchen-Yagun River Basin (confluent of Malyi Sphagnum spp., Pleurozium schreberi , Hylocomium splendens, Yugan River), lake near cordon. Mosses and litter in Pinus- Pinus sylvestris, Betula, Pinus sibirica, Ledum palustre, Oxycoccus Ledum-Sphagnum sparse forest with sparse Betula, Chamaedaphne sp., Rubus chamaemorus, Vaccinium myrtillus, V. vitis-idaeae, V. calyculata, Oxycoccus sp., Rubus chamaemorus, Eriophorum sp., uliginosum, Carex sp. etc., 12.X.1998, leg. A.R. Sphagnum magellanicum, Sph. spp., 18.IX.2001, leg. A.R.; 4 ##, 4 $$, Yuganskiy Reserve, Nyogus’yakh River, cordon Bisarki- 3 $$, Kol-Kotchen-Yagun River Basin (confluent of Malyi na. Mosses and litter on slope (from rill-bed to crest) near Yugan River), lake near cordon. Overgrown mesotrophic swamp cordon: Abies , Picea , Pinus sibirica , Betula , Populus tremula, with Pinus sylvestris, P. sibirica, Betula, Picea obovata: open plots Sorbus , Vaccinium vitis-idaeae , V . myrtillus , Equisetum sylvati- of Sphagnum girgensohnii , Sph . russowii , Sph. sp., Polytrichum cum , Pleurozium schreberi , Hylocomium splendens , Maianthe- commune with Carex globularis , Equisetum sylvaticum , Ledum mum , Trientalis , Carex ?globularis, graminoids etc., 22.X.1998, palustre etc., 19.IX.2001, leg. A.R.; 1 $, Bolshoy Yugan River leg. A.R.; 2 $$, Nyogus’yakh River, cordon Bisarkina. Mosses near Kamennyi cordon, swamped birch forest with Sphagnum and litter in flood-plane forest and at natural levee with Abies, spp., Carex sp., Gramineae, Ledum palustre etc., 15.VIII.2002, Picea , Pinus sibirica , Betula , Oxalis , Equisetum sylvaticum , Eq. leg. A.R.; 2 ##, 5 $$, Ay-Magromsy River Basin, 1 km N of pratense, Maianthemum, Trientalis, Linnaea, Hylocomium splen- Medvezhyi Ugol cordon, mosses and litter on flood-plain of dens, Pleurozium schreberi, placely Sphagnum sp. (girgensohnii or rill with Calamagrostis sp., Filipendula ulmaria , Spiraea sp., russowii) etc., 24.X.1998, leg. A.R.; 5 $$, Nyogus’yakh River, Equisetum sylvaticum , Plagiomnium sp., Sphagnum spp. etc., cordon Bisarkina. Parching rill near cordon: mosses and litter (+5C?), 05.X.2002, leg. A.R.; 1 $, Ay-Magromsy River Basin, 3 in rill-bed and by banks (Carex spp., Equisetum sylvaticum, km N of Medvezhyi Ugol cordon, mosses and litter in hum- 42 A.V. Tanasevitch mocky with Carex sp., Filipendula ulmaria, Comarum palustre, litter on slope near parched rill about cordon: Abies , Picea, Plagiomnium sp., Climacium dendroides, Sphagnum russowii, Sph. Betula, Sorbus , Hylocomium splendens , Pleurozium schreberi, spp. etc., on flood-plain of rill, 03.X.2002, leg. A.R.; 4 ##, 1 $, Ptilium, Maianthemum, Trientalis, Linnaea, Equisetum sylvaticum, Malyi Yugan River, cordon below Lyarykni River mouth, open Polytrichum commune, Oxalis etc., 31.X.1998, leg. A.R.; 1 #, 2 swamp with tussocks of Carex spp. and Calamagrostis sp. with $$, Malyi Yugan River Basin, 3–5 km SW of cordon at Kol- Comarum palustre , Salix sp., Sphagnum squarrosum , Sph. spp., Kotchen-Yagun River, near lake. Moss and litter under Pinus ?Aulacomnium sp. etc., between sparse young Betula, 17.VIII.2003, sibirica with Vaccinium vitis-idaea , Ledum , Linnaea borealis, leg. A.R.; 2 ##, 1 $, Malyi Yugan River, near cordon below Carex ?globularis, Equisetum sylvaticum, Hylocomium splendens, Maalyakh River mouth, on ground and in sweeping at river Pleurozium schreberi, Dicranum sp., 31.VIII.1999, leg. A.R.; 1 $, bank: sand, clay, Carex spp., Poaceae, Equisetum sp., Vicia sp., Malyi Yugan River Basin, 3–5 km SW of cordon at Kol- Veronica longifolia, etc., 19.VIII.2003, leg. A.R. Kotchen-Yagun River, near lake. Moss and litter under Pinus 1 #, 2 $$, Tobolsk Field Research Station, mosses and sibirica , P . sylvestris, young Abies with Hylocomium splendens, litter and in sweeping on small swamp with Carex spp., Pleurozium schreberi, Dicranum sp., Vaccinium myrtillus, V. vitis- Poaceae, Sphagnum girgensohnii, Sph. squarrosum, Sph. ?riparium, idaea, Linnaea borealis, sparse Ledum on low knoll, 09.IX.1999, Sph. ?balticum , Sph . centrale etc., 20.IX.2003, leg. A.R.; 3 $$, leg. A.R.; 4 $$, Malyi Yugan River Basin, 3–5 km SW of cordon mosses and litter and in sweeping on small swamp with Carex at Kol-Kotchen-Yagun River, Moss and litter under Picea and spp., Poaceae, Sphagnum girgensohnii , Sph . squarrosum , Sph. Abies with Hylocomium splendens, Pleurozium schreberi, Polytri- ?riparium, Sph. ?balticum, Sph. centrale etc., 21.IX.2003, leg. A.R.; chum commune, Linnaea borealis, sparse Equisetum sylvaticum, 1 $, gentle sandy left bank of Irtysh River with clayish spots: Maianthemum bifolium , Trientalis europaea , Vaccinium vitis- among Equisetum sp. 15.IX.2003, leg. A.R.; 1 #, 1 $, flood-plain idaea, 12.IX.1999, leg. A.R.; 1 $, Vuya-Yany River near Ay- of Missiinka River near mouth, sweeping on Carex spp., Vuya-Yany River mouth. Mosses and litter in forest at crest Comarum palustre , Mentha sp., Lythrum sp., Stachys sp. etc., line: Pinus sibirica , P . sylvestris , Picea obovata , Abies sibirica, 18.IX.2003, leg. A.R.; 2 ##, 3 $$, flood-plain of left bank of Vaccinium vitis-idaea , V. myrtillus , Linnaea borealis , Trientalis Irtysh River, swampy shore of Letneye Lake: Carex spp., Comar- europaea, Equisetum sylvaticum, Pleurozium schreberi, Hylocomi- um palustre , Scirpus sp., mosses, 01.X.2003, leg. A.R.; 5 ##, um splendens, Dicranum sp., Diphasiastrum sp., 18.VIII.2000, leg. mosses and litter among sparse Salix spp., Betula, Pinus sylves- A.R.; 2 $$, Vuya-Yany River near Ay-Vuya-Yany River mouth. tris with tussocks of Carex spp., Poaceae, Lythrum sp., Filipen- Mosses and litter in forest at crest line: Pinus sibirica , P. dula ulmaria, Climacium dendroides, isolated spots of Sphagnum sylvestris, Picea obovata, Abies sibirica, Vaccinium vitis-idaea, V. squarrosum, Sph. sp. etc., on swamped flood-plain of left bank myrtillus, Linnaea borealis, Trientalis europaea, Equisetum sylvat- of Irtysh River, 29.IX.2003, leg. A.R.; 1 $, among Carex spp. on icum , Pleurozium schreberi , Hylocomium splendens , Dicranum flood-plain of Varpak River, 25.IX.2003, leg. A.R.; 2 $$, near sp., Diphasiastrum sp., 21.VIII.2000, leg. A.R.; 3 ##, 4 $$, Gornoslinkino, right bank of Irtysh River, mosses and leaf Nyogus’yakh River near Kogontchina-2 field research station. litter in swampy sparse birch forest with tussocks of Carex Mosses and litter under Betula , Abies sibirica , Picea obovata, globularis, C. spp., Sphagnum girgensohnii, Sph. spp. etc., Pinus sibirica with Hylocomium splendens , Linnaea borealis, 12.VI.2004, leg. A.R. 2 ##, 6 $$, 9–10 km S of Gornoslinkino, Oxalis acetosella , Maianthemum bifolium , Pyrola sp., Trientalis steep right bank of Irtysh River below Tobolsk Field Research europaea, Equisetum pratense, Eq. sylvaticum etc., on 1st fluvial Station, mosses and litter among sparse Tussilago farfara on terrace above flood-plain, 29.VIII.2000, leg. A.R.; 2 $$, clay and loam, 04.X.2003, leg. A.R. Nyogus’yakh River near Kogontchina-2 field research station. 4 ##, 7 $$, Luginetsky, Abies, Picea, Betula forest, in moss, Mosses and peat under Carex ?globularis near small forest 26–VIII.1998, leg. A.T.; 2 ##, 3 $$, Picea & Betula forest, in swamp on island in the middle of large high moor, 02.IX.2000, moss, 22–28.VIII.1998, leg. A.T. leg. A.R.; 1 $, near S border of buffer area of Yuganskiy 2 ##, 4 $$, Samotlor, Populus forest, under Ledum, in Reserve, Koimlor (Krimlor) Lake. Litter under Picea obovata moss, Aug. 1999, A.T. leg.; 1 #, 5 $$, Populus & Pinus forest, in and Pinus sibirica with Lycopodium sp., Linnaea borealis, ferns, moss, Aug. 1999, leg. A.T. Gramineae, Trientalis europaea, sparse Ledum palustre etc., in 3 ##, Noyabrsky, Picea wood, moss & lichen, 16.VIII.2000, moist forest near lake shore, 02.IX.2001, leg. A.R.; 1 $, near S leg A.T. border of buffer area of Yuganskiy Reserve, Koimlor (Krimlor) 12 ##, 32 $$, Nefteyugansk, mixed forests: Abies, Pinus Lake. Mosses and litter in tussocks between sparse Betula and sibirica, Picea, Betula with Equisetum, Vaccinium spp., Empetrum, Salix sp. near lake shore: Carex spp., Gramineae, Sphagnum mosses, VIII.2001, leg. A.T. squarrosum, Sph. centrale, Sph. girgensohnii, Comarum palustre, DISTRIBUTION. Widespread in Europe, known in the sparse Equisetum sp., 02.IX.2001, leg. A.R.; 1 $, near S border of Urals, West and Middle Siberia, Khabarovsk Prov. buffer area of Yuganskiy Reserve, rill between Kolynlor Lake and Koimlor (Krimlor) Lake. Mosses and litter under Pinus sibirica in forest at the rill bank: Lycopodium sp., ferns, Linnaea Centromerus clarus (L. Koch, 1879) borealis , Vaccinium vitis-idaea , Orthilia secunda , Pleurozium schreberi, Hylocomium splendens, Dicranum sp., Polytrichum sp., 1996 Centromerus clarus, Esyunin, Ekosistemy Srednego Calamagrostis sp., sparse Ledum palustre etc., 04.IX.2001, leg. Priob’ya, 1, p. 70. A.R.; 3 $$, Kol-Kotchen-Yagun River (confluent of Malyi Yugan River) E of cordon. Loamy river bank with Carex spp., MATERIAL. 1 $, Surgutskiy Refuge, Ob’ River Basin, Ma- Gramineae, Equisetum spp., small Rosa sp. & Salix sp. etc., terikovyi Pasl Channel, 2 km S of cordon. Mosses and litter in 16.IX.2001, leg. A.R.; 2 $$, Kol-Kotchen-Yagun River Basin forest with Pinus sibirica, Populus tremula, Picea obovata, Pinus (confluent of Malyi Yugan River), lake near cordon. Mosses sylvestris , Sorbus sibirica , Hylocomium splendens , Pleurozium and litter under Pinus sylvestris , P . sibirica , Picea obovata in schreberi, Dicranum sp., Polytrichum commune, Lycopodium sp., forest near cordon: Ledum palustre, Chamaedaphne calyculata, Diphasiastrum sp., Diplazium sibiricum, Vaccinium vitis-idaea, V. Pleurozium schreberi, Hylocomium splendens, Dicranum sp., Poly- myrtillus, Majanthemum bifolium, Trientalis europaea, Equisetum trichum commune, Vaccinium vitis-idaea, V. myrtillus, spots of sylvaticum, Ledum palustre etc., 09.VIII.2000, leg. A.R. Sphagnum girgensohnii and Sph. russowii et al., 25.IX.2001, leg. 2 $$, Yuganskiy Reserve, Nyogus’yakh River, cordon Bisarki- A.R.; 2 ##, 5 $$, Kol-Kotchen-Yagun River Basin (confluent na. Mosses and litter on slope (from rill-bed to crest) near of Malyi Yugan River), lake near cordon. Mosses and litter cordon: Abies , Picea , Pinus sibirica , Betula, Populus tremula, under Pinus sylvestris, P. sibirica and elfin wood of Abies sibirica Sorbus , Vaccinium vitis-idaeae , V. myrtillus , Equisetum sylvati- with Vaccinium vitis-idaea, V. myrtillus, Linnaea borealis, Pleuro- cum , Pleurozium schreberi , Hylocomium splendens , Maianthe- zium schreberi, Hylocomium splendens, Dicranum sp., Lycopodi- mum , Trientalis , Carex ?globularis, graminoids etc., 22.X.1998, um sp., sparse Ledum palustre et al., in forest on hill crest NW leg. A.R.; 1 $, Nyogus’yakh River, cordon Bisarkina. Mosses and of lake, 01.X.2001, leg. A.R.; 1 #, 3 $$, Ay-Magromsy River Linyphiid spiders of the West Siberian Plain 43

Basin, Medvezhyi Ugol cordon, mosses and litter at swamp Centromerus incilium (L. Koch, 1881) border: Carex rostrata , Sphagnum girgensohnii , Sph. spp. etc., among sparse young birches, 11.IX.2002, leg. A.R.; 2 $$, Ay- MATERIAL. 2 ##, 3 $$, Noyabrsky, dry Pinus forest, Magromsy River Basin, Medvezhyi Ugol cordon, mosses and Ledum, Vaccinium vitis-idea, V . uliginosum, Empetrum, moss & litter under Populus tremula, Pinus sibirica, Picea obovata, Pinus lichen (Cladina & Cetraria), 11–12.VIII.2000, leg. A.T. sylvestris with Abies thicket, Hylocomium splendens, Pleurozium DISTRIBUTION. Europe, the Urals and West Siberia. schreberi , Dicranum polysetum , Polytrichum commune , Equise- tum sylvaticum , Vaccinium vitis-idaea , Linnaea borealis etc., This is the first record in Siberia. (+3C?, after first snowfall), 13.IX.2002, leg. A.R.; 3 $$, Ay- Magromsy River Basin, Medvezhyi Ugol cordon, mosses and Centromerus levitarsis (Simon, 1884) litter at the foot of slope near border of open swamp: Pinus sylvestris, P. sibirica, Picea obovata, Juniperus communis, Ledum MATERIAL. 6 $$, Surgutskiy Refuge, Ob’ River Basin, palustre , Chamaedaphne calyculata , Carex globularis , Pleuro- Materikovyi Pasl Channel, 2 km S of cordon. Mosses and litter zium schreberi , Dicranum polysetum , Polytrichum spp., Sphag- on swamp with Sphagnum spp., Carex spp., Eriophorum sp., num spp., Equisetum sylvaticum , Eq . pratense , Vaccinium vitis- Ledum , Betula ?rotundifolia , Aulacomnium sp., Hypnum sp., idaea etc., (+14 – +8C?), 25.IX.2002, leg. A.R. Polytrichum sp., sparse Pinus sylvestris, Betula sp., Populus tremu- 2 ##, Tobolsk Field Research Station, mosses and litter la etc., 09.VIII.2000, leg. A.R. under Betula, Pinus sibirica, Alnus, Abies with Carex globularis, 3 $$, Yuganskiy Reserve, Nyogus’yakh River Basin near Oxalis acetosella, Linnaea borealis, Delphinium sp., Maianthe- Petchpan’yakh River mouth. Mosses and litter on large swamp: mum bifolium , Pyrola sp., Rubus saxatilis, sparse Pleurozium Carex spp., Comarum palustre , Equisetum sp., Eriophorum sp., schreberi etc., on gentle slope near Varpak River, 22.IX.2003, Gramineae, Rumex sp., ?Aulacomnium sp., Plagiomnium sp., leg. A.R.; 6 ##, 4 $$, mosses and litter under Pinus sylvestris, Ptilium crista-castrensis, Sphagnum sp., Chamaenerium angustifo- P. sibirica, Picea, young Abies with Ledum palustre, Vaccinium lium, sparse Betula & Salix sp., spots of dwarf birch on vitis-idaea , V . myrtillus, Poaceae, Carex globularis , Linnaea hummocks etc., 11.IX.2000, leg. A.R.; 1 #, 4 $$, Nyogus’yakh borealis, Pleurozium schreberi, Hylocomium splendens, Dicranum River Basin near Petchpan’yakh River mouth. Mosses and litter polysetum etc., on upper part of slope, 02.X.2003, leg. A.R.; 4 on large swamp: Carex spp., Comarum palustre, Equisetum sp., ##, 5 $$, in litter under Pinus sibirica, Picea, Betula, Abies, Eriophorum sp., Gramineae, Rumex sp., ?Aulacomnium sp., Plagi- Tilia , Populus tremula with Lonicera sp., Carex globularis, omnium sp., Ptilium crista-castrensis, Sphagnum sp., Chamaeneri- Oxalis acetosella , Pyrola sp., Delphinium sp., Lathyrus sp., um angustifolium, Betula and Salix sp. etc., 13.IX.2000, leg. A.R.; Equisetum sylvaticum etc., on slope, 20.IX.2003, leg. A.R.; 4 $$, 2 $$, Nyogus’yakh River Basin near Petchpan’yakh River in mosses and litter under Betula, Picea, Alnus with Pyrola sp., mouth. Mosses and litter on large swamp: Carex spp., Comarum Carex globularis, Poaceae, Equisetum sylvaticum, Linnaea bore- palustre , Equisetum sp., Nardosmia frigida , Eriophorum sp., alis, Pleurozium schreberi, Dicranum polysetum, Oxalis aceto- Gramineae, Rumex sp., ?Aulacomnium sp., Plagiomnium sp., sella , Gallium sp., Aegopodium podagraria , Rubus idaeus , R. Ptilium crista-castrensis , Sphagnum sp., Chamaenerium angust, saxatilis etc., on slope (from foot to top), 28.IX.2003, leg. A.R.; Sphagnum ?russowii, Sph. sp., Salix sp. etc., 15.IX.2000, leg. A.R.; 2 ##, 3 $$, mosses and litter under Betula, Pinus sibirica, 1 $, Nyogus’yakh River Basin near Petchpan’yakh River mouth. Abies with Carex globularis , Linnaea borealis , Maianthemum Mosses and litter on large open swamp: Sphagnum ?angustifoli- bifolium, Vaccinium vitis-idaea, V. myrtillus, Equisetum sylvati- um , Sph. ?girgensohnii , Sph. ?russowii , Sph. sp., dwarf birch, cum , Hylocomium splendens , Pleurozium schreberi , Dicranum Oxycoccus spp., Gramineae, Carex spp., Comarum palustre, polysetum, Sphagnum girgensohnii, Sph. russowii, Sph. warnstor- Equisetum sp., ?Aulacomnium sp., Plagiomnium sp., Ptilium crista- fii , Lycopodium sp., Diplazium sibiricum , Oxalis acetosella, castrensis etc., 24.IX.2000, leg. A.R. Rubus idaeus, R. saxatilis etc., 24.IX.2003, leg. A.R2 $$, in litter DISTRIBUTION. Europe, in Siberia known from the under Pinus sibirica, Abies sibirica, Populus tremula, with un- Urals to Yenisey River. This is the first record in West dergrowth of Tilia cordata , Diplazium sibiricum , Equisetum sylvaticum , Maianthemum bifolium , Oxalis acetosella etc., Siberia. 10.VI.2004, leg. A.R.; 2 $$, right bank of Irtysh River up- stream of Tobolsk Field Research Station, leaf litter near top Centromerus semiater (L. Koch, 1879) of slope, under Betula , Tilia , Populus tremula with Carex globularis, Stellaria sp. etc., 04.VI.2004, leg. A.R.; 9 ##, 6 $$, 1996 Centromerus alnicola, Esyunin, Ekosistemy Srednego Tyumen Area, Uvatskiy District, 10 km S of Gornoslinkino, Priob’ya, 1, p. 70. Tobolsk Field Research Station, mosses and litter in forest with Abies , Picea , Betula , Carex globularis , Calamagrostis sp., MATERIAL. 2 $$, Yuganskiy Reserve, Nyogus’yakh River, Equisetum sylvaticum, Pyrola sp., Maianthemum bifolium, Lin- cordon Bisarkina. Moss and litter on swamp amid flood plain naea borealis , Oxalis acetosella , Solidago sp., Lathyrus sp., forest near foot of slope: Menyanthes trifoliata, Equisetum spp., Lonicera sp., Hylocomium splendens, Pleurozium schreberi, Di- Sphagnum squarrosum (sparse), Sph. ?centrale , Sph. spp., Nar- cranum polysetum etc., 13.IX.2003, leg. A.R. dosmia frigida , Carex spp., Gramineae, Salix sp., Comarum 1 $, Samotlor, Pinus forest, in moss and lichen, Aug. 1999, palustre, Filipendula ulmaria, ?Tomenthypnum sp., Plagiomnium leg. A.T.; 1 #, 2 $$, Populus forest, in moss, Aug. 1999, A.T. leg.; sp. etc., 27.X.1998, leg. A.R.; 1 #, 4 $$, Malyi Yugan River 1 #, 3 $$, Populus & Pinus forest, in moss, Aug. 1999, A.T. leg.; Basin, near Koimlor Lake. Mosses and litter on swamp: Sphag- 2 $$, Betula forest, glade, in grass, Aug. 1999, leg. A.T. num fuscum, Sph. spp., Polytrichum strictum, Pleurozium schreberi, 14 ##, 15 $$, Luginetsky, Abies, Picea, Betula forest, in Oxycoccus spp., Rubus chamaemorus, Vaccinium uliginosum, Le- moss, 21–28.VIII.1998, leg. A.T.; 12 ##, 18 $$, Picea & Betula dum , Chamaedaphne , Andromeda, young Pinus sylvestris etc., forest, in moss, 22–28.VIII.1998, leg. A.T.; 1 #, Abies & Picea 10.VIII.1998, leg. A.R.; 2 $$, Malyi Yugan River Basin, 3–5 km forest, log, unger bark, 28.VIII.1998, leg. A.T.; 4 ##, 1 $, SW of cordon at Kol-Kotchen-Yagun River, near lake. Mosses swampy spruce (Picea) forest, in moss, 25.VIII.1998, leg. A.T.; 6 on swamp near N shore of lake: Sphagnum spp., Carex spp., $$, Picea wood, moss & lichen, 16.VIII.2000, leg. A.T. Eriophorum sp., Chamaedaphne calyculata, Andromeda polifolia, 2 $$, Nefteyugansk, mixed forests: Abies , Pinus sibirica, Oxycoccus spp., Vaccinium uliginosum et al., 17.IX.1999, leg. Picea, Betula with Equisetum, Vaccinium spp., Empetrum, mosses, A.R.; 1 $, Malyi Yugan River Basin, 3–5 km SW of cordon at VIII.2001, leg. A.T. Kol-Kotchen-Yagun River, near lake. Mosses on swamp near N DISTRIBUTION. The Urals, West and Middle Siberia, shore of lake: Sphagnum spp., Carex spp., Eriophorum sp., through the mountains of South Siberia via the Lake Baikal Chamaedaphne calyculata, Andromeda polifolia, Oxycoccus spp., region eastward to Khabarovsk Prov. Vaccinium uliginosum et al., 18.IX.1999, leg. A.R.; 1 $, Malyi 44 A.V. Tanasevitch

Yugan River Basin, Kol-Kotchen-Yagun River, 1 km S of la etc., 09.VIII.2000, leg. A.R.; 3 $$, Ob’ River Basin, right bank cordon. Mosses and litter on small sedge-mossy swamp near of Materikovyi Pasl Channel. Lake shore: Carex spp., Comarum river bank: Carex spp., Sphagnum ?girgensohnii, Sph. ?riparium, palustre, Lamiaceae, Climacium, Plagiomnium sp. etc., 10.VIII.2000, Plagiomnium sp. et al., 24.IX.1999, leg. A.R.; 4 $$, Vuya-Yany leg. A.R.; 3 $$, Ob’ River Basin, Materikovyi Pasl Channel. Moss River near Ay-Vuya-Yany River mouth. Flood-plain depression: and litter in forest with Abies, Picea, Populus tremula, Betula, Filipendula ulmaria , Carex sp., Gramineae, Spiraea sp., Ribes young Pinus sibirica , Pleurozium schreberi , Hylocomium splen- nigrum, Comarum palustre, Sphagnum squarrosum, Sph . girgen- dens , Dicranum sp., Polytrichum commune , Equisetum sylvati- sohnii, Climacium dendroides, Aulacomnium sp., Plagiomnium sp. cum, Linnaea borealis, Oxalis acetosella, Trientalis europaea etc., etc., 24.VIII.2000, leg. A.R.; 6 $$, Vuya-Yany River near Ay- 07.VIII.2000, leg. A.R.; 2 ##, 1 $, Ob’ River Basin, Materikovyi Vuya-Yany River mouth. Swamped flood-plain of left river Pasl Channel. Mosses and litter under Pinus sibirica and Picea bank: Carex spp., Comarum palustre, Filipendula ulmaria, Spi- obovata with Hylocomium splendens, Pleurozium schreberi, Lin- raea sp., Ribes nigrum, Sphagnum squarrosum, Sph. ?girgensohnii, naea, Vaccinium vitis-idaea, V. myrtillus, Polytrichum commune, Plagiomnium sp., Aulacomnium sp. etc., 27.VIII.2000, leg. A.R.; 2 Majanthemum bifolium , Trientalis europaea , Lycopodium sp., ##, 4 $$, Kol-Kotchen-Yagun River Basin (confluent of Malyi Diphasiastrum sp., Equisetum sylvaticum , E. ?pratense etc., Yugan River), lake near cordon. Tussocks with Carex spp., 12.VIII.2000, leg. A.R.; Calamagrostis sp., Comarum palustre between sparse Betula and 2 $$, Yuganskiy Reserve, Nyogus’yakh River, cordon Bisarki- Pinus sylvestris at NW shore of lake: Sphagnum centrale, Sph. na. Parching rill near cordon: mosses and litter in rill-bed and girgensohnii, Sph. ?aongstroemii, Sph. spp., Climacium dendroides, by banks (Abies , Picea , Salix, Padus , Betula , Populus tremula, Plagiomnium sp., Salix sp., Spiraea sp. etc., 17.IX.2001, leg. A.R.; 3 Linnaea , Trientalis , Oxalis , Polytrichum commune , Carex spp., $$, Kol-Kotchen-Yagun River Basin (confluent of Malyi Yugan Equisetum sylvaticum , Sphagnum ?riparium , Sph. ?girgensohnii River), lake near cordon. Mosses and litter between sparse etc.), 22.X.1998, leg. A.R.; 3 ##, 5 $$, near Vuya-Yany River Betula and Pinus spp. by N shore of lake: Carex spp., Calama- mouth. Moss and litter in flood-plane forest with Abies, Picea, grostis sp., Eriophorum sp., Salix spp., Comarum palustre, Sphag- Betula, Pinus sibirica, Sorbus, Vaccinium vitis-idaea , Equisetum num squarrosum , Sph . centrale , Sph. spp., Hypnum sp. etc., sylvaticum , Eq . pratense , Hylocomium splendens , Pleurozium 22.IX.2001, leg. A.R.; 1 $, Kol-Kotchen-Yagun River (confluent schreberi, Polytrichum commune, Ptilium, Climacium, Maianthe- of Malyi Yugan River) NE of cordon. Swampy flood-plain birch mum , Trientalis , Veratrum etc., 15.VIII.1998, leg. A.R.; 3 $$, forest: tussocks of Carex spp. & Gramineae, Comarum palustre, Vuya-Yany River near Ay-Vuya-Yany River mouth. Swamped Filipendula ulmaria, Ranunculaceae, Sphagnum girgensohnii, Sph. flood-plain of left river bank: Carex spp., Comarum palustre, spp., Climacium dendroides, Plagiomnium sp. etc., 23.IX.2001, leg. Filipendula ulmaria, Spiraea sp., Ribes nigrum, Sphagnum squar- A.R.; 2 $$, Kol-Kotchen-Yagun River Basin (confluent of Malyi rosum, Sph. ?girgensohnii, Plagiomnium sp., Aulacomnium sp. etc., Yugan River), lake near cordon. Mosses and litter by NE shore 27.VIII.2000, leg. A.R.; 3 $$, near Vuya-Yany River mouth. of lake: spp., tussocks of Carex spp., Calamagrostis sp., Sphagnum Mosses and litter in flood-plane forest with Pinus sibirica, Abies, squarrosum (?aongstroemii), Sph. centrale, Sph. ?girgensohnii, Sph. Picea, Betula, Rosa, Vaccinium vitis-idaea, Maianthemum, Trien- russowii between sparse birch wood with isolated Pinus sylves- talis , Pleurozium schreberi , Hylocomium splendens , Equisetum tris, 30.IX.2001, leg. A.R.; 1 $, Ay-Magromsy River Basin, Med- sylvaticum, spots of Sphagnum ?girgensohnii and Sph. ?russowii vezhyi Ugol cordon, mosses and litter at rill bank and on etc., 09.VIII.1998, leg. A.R.; 1 #, 2 $$, Nyogus’yakh River Basin, flood-plain of rill: Calamagrostis sp., Ribes spp., Rosa sp., Filipen- forest road, 3 km ENE of cordon Bisarkina. Moss and litter in dula ulmaria , Matteuccia struthiopteris , Equisetum sylvaticum, forest with Picea, Pinus sibirica, P . sylvestris, Betula, Equisetum Sphagnum squarrosum, Sph. girgensohnii, Sph. spp., Plagiomnium pratense, Eq. sylvaticum, Pleurozium schreberi, Hylocomium splen- sp. etc., 20.IX.2002, leg. A.R.; 1 $, Ay-Magromsy River Basin, dens , Vaccinium myrtillus , V. vitis-idaea , Sphagnum russowii Medvezhyi Ugol cordon, mosses on sedge-mossy swamp: Carex (placely), 28.X.1998, leg. A.R.; 2 $$, Nyogus’yakh River, cordon rostrata, C. spp., Sphagnum ?angustifolium, Sph. girgensohnii, Sph. Bisarkina. Parching rill near cordon: mosses and litter in rill- sp., Oxycoccus spp., (+8C?), 26.IX.2002, leg. A.R.; 1 #, 5 $$, Ay- bed and by banks (Carex spp., Equisetum sylvaticum, Sphagnum Magromsy River Basin, Medvezhyi Ugol cordon, mosses and ?riparium, Sph. ?girgensohnii, Polytrichum commune, Filipendula litter near rill: Plagiomnium sp., Sphagnum squarrosum , Sph. ulmaria, Gramineae, Veratrum, Linnaea, Maianthemum, Trienta- centrale , Sph . girgensohnii , Sph . warnstorfii , Calamagrostis sp., lis, Tomenthypnum sp., Plagiomnium sp. etc.), 31.X.1998, leg. A.R.; Carex sp. among sparse Salix sp. and birches, (+6C?), 27.IX.2002, 4 $$, Vuya-Yany River near Ay-Vuya-Yany River mouth. leg. A.R. Mosses and litter in forest at crest line: Pinus sibirica , P. 1 $, Tobolsk Field Research Station, mosses and litter under sylvestris, Picea obovata, Abies sibirica, Vaccinium vitis-idaea, V. Pinus sibirica, Abies, Betula in swamped sparse forest with Sphag- myrtillus, Linnaea borealis, Trientalis europaea, Equisetum sylvat- num girgensohnii , Sph. ?russowii , Sph . centrale , Sph . squarrosum, icum , Pleurozium schreberi , Hylocomium splendens , Dicranum Linnaea borealis , Oxalis acetosella , Equisetum sylvaticum , Carex sp., Diphasiastrum sp., 21.VIII.2000, leg. A.R.; 2 $$, Nyogus’yakh globularis, C. sp., Pleurozium schreberi etc., 21.IX.2003, leg. A.R. River near Kogontchina-2 field research station. Mosses and DISTRIBUTION. Europe, in Siberia known from the peat on flood-plain forest swamp with Filipendula ulmaria, Urals to Yenisey River. Gramineae, Ribes nigrum , Sorbus sibirica , Rosa sp., Matteuccia struthiopteris, Comarum palustre, Rubus saxatilis etc., 29.VIII.2000, leg. A.R.; 2 $$, Kol-Kotchen-Yagun River Basin (confluent of Centromerus sylvaticus (Blackwall, 1841) Malyi Yugan River), lake near cordon. Overgrown mesotrophic swamp with Pinus sylvestris , P . sibirica , Betula , Picea obovata: 1996 Centromerus sylvaticus, Esyunin, Ekosistemy Srednego open plots of Sphagnum girgensohnii , Sph . russowii , Sph. sp., Priob’ya, 1, p. 70. Polytrichum commune with Carex globularis, Equisetum sylvati- cum, Ledum palustre etc., 19.IX.2001, leg. A.R.; 1 #, 2 $$, Kol- MATERIAL. 1 #, Surgutskiy Refuge, Ob’ River Basin, Kotchen-Yagun River Basin (confluent of Malyi Yugan River), Materikovyi Pasl Channel. Moss and litter in forest at high lake near cordon. Mosses and litter under Pinus sylvestris, P. river bank with Abies , Picea , Populus tremula, young Pinus sibirica , Picea obovata in forest near cordon: Ledum palustre, sibirica , Hylocomium splendens , Pleurozium schreberi , Polytri- Chamaedaphne calyculata , Pleurozium schreberi , Hylocomium chum commune , Maianthemum bifolium , Vaccinium vitis-idaea, splendens, Dicranum sp., Polytrichum commune, Vaccinium vitis- Lycopodium sp., Diphasiastrum sp., Equisetum sylvaticum , Lin- idaea , V. myrtillus, spots of Sphagnum girgensohnii and Sph. naea borealis etc., 05.VIII.2000, leg. A.R.; 2 $$, Ob’ River Basin, russowii et al., 25.IX.2001, leg. A.R.; 2 $$, Ay-Magromsy River Materikovyi Pasl Channel, 2 km S of cordon. Mosses and litter Basin, Medvezhyi Ugol cordon, mosses and litter under Populus on swamp with Sphagnum spp., Carex spp., Eriophorum sp., tremula, Pinus sibirica, Picea obovata, Pinus sylvestris with Abies Ledum , Betula ?rotundifolia , Aulacomnium sp., Hypnum sp., thicket, Hylocomium splendens, Pleurozium schreberi, Dicranum Polytrichum sp., sparse Pinus sylvestris, Betula sp., Populus tremu- polysetum, Polytrichum commune, Equisetum sylvaticum, Vaccin- Linyphiid spiders of the West Siberian Plain 45 ium vitis-idaea, Linnaea borealis etc., (+3C?, after first snowfall), dromeda polifolia, Oxycoccus sp., sparse Pinus sylvestris etc., and 13.IX.2002, leg. A.R.; 1 #, 2 $$, Malyi Yugan River, near in sweeping., 20.VIII.2003, leg. A.R. cordon below Maalyakh River mouth, mosses and litter in DISTRIBUTION. Siberia: from the Urals to Cisokhotia, forest with Pinus sibirica , P . sylvestris , Picea , Betula , Populus known also from Sakhalin. Widespread in the Nearctic. tremula, Abies, Equisetum sylvaticum, Linnaea borealis, Vaccini- um vitis-idaea, V. myrtillus, Carex globularis, Pleurozium schreberi, Hylocomium splendens , Polytrichum commune, sparse spots of Ceratinella brevipes (Westring, 1851) Sphagnum girgensohnii and Ledum palustre, 20.VIII.2003, leg. A.R. 1996 Ceratinella brevipes, Esyunin, Ekosistemy Srednego 1 $, Tobolsk Field Research Station, mosses and litter Priob’ya, 1, p. 71. under Betula, Pinus sibirica, Alnus, Abies with Carex globularis, Oxalis acetosella , Linnaea borealis , Delphinium sp., Maianthe- DISTRIBUTION. Widespread in Europe, occurs also in mum bifolium , Pyrola sp., Rubus saxatilis, sparse Pleurozium the Caucasus and the Urals. In Asia known in West Siberia, schreberi etc., on gentle slope near Varpak River, 22.IX.2003, the Lake Baikal region and Japan. leg. A.R. 1 $, Samotlor, Populus & Pinus forest, in moss, Aug. 1999, A.T. leg.; 1 $, bank of Vakh River, Salix bushes, litter, Aug. Ceratinella brevis (Wider, 1834) 1999, leg. A.T. 12 ##, 14 $$, Luginetsky, Abies, Picea, Betula forest, in MATERIAL. 2 ##, 1 $, Yuganskiy Reserve, Nyogus’yakh moss, 21–28.VIII.1998, leg. A.T.; 2 ##, 4 $$, Picea & Betula River, cordon Bisarkina. Moss and litter at swamp amid flood- forest, in moss, 22–28.VIII.1998, leg. A.T.; 1 #, Picea, Abies & plain forest near foot of slope: Menyanthes trifoliata, Equisetum Betula forest, in moss, 26.VIII.1998, leg. A.T. sp., Sphagnum spp., Comarum palustre , Filipendula ulmaria, 1 #, Nefteyugansk, mixed forests: Abies, Pinus sibirica, Picea, ?Tomenthypnum sp., Plagiomnium sp. etc., with sparse Betula, Betula with Equisetum , Vaccinium spp., Empetrum, mosses, Picea, Abies, Pinus sibirica, 25.X.1998, leg. A.R.; 1 $, Nyogus’yakh VIII.2001, leg. A.T. River, cordon Bisarkina. Moss and litter on swamp amid flood 2 $$, Tyumen, VI.2000, leg. U. plain forest near foot of slope: Menyanthes trifoliata, Equisetum DISTRIBUTION. Pan-Holarctic. spp., Sphagnum squarrosum (sparse), Sph. ?centrale , Sph. spp., Nardosmia frigida, Carex spp., Gramineae, Salix sp., Comarum Ceraticelus bulbosus (Emerton, 1882) palustre, Filipendula ulmaria, ?Tomenthypnum sp., Plagiomnium sp. etc., 27.X.1998, leg. A.R.; 2 $$, Nyogus’yakh River Basin, forest road, 3 km ENE of cordon Bisarkina. Moss and litter in 1992 Ceraticelus sibiricus, Esyunin & Novokshenov, Trudy forest with Picea, Pinus sibirica, P . sylvestris, Betula, Equisetum Zool. Inst. AN SSSR, 226, p. 116. pratense, Eq. sylvaticum, Pleurozium schreberi, Hylocomium splen- 1996 Ceraticelus sibiricus, Esyunin, Ekosistemy Srednego dens , Vaccinium myrtillus , V . vitis-idaea , Sphagnum russowii Priob’ya, 1, p. 71. (placely), 28.X.1998, leg. A.R.; 1 #, 2 $$, Nyogus’yakh River, cordon Bisarkina. Tussocks with Carex spp., Gramineae, Filipen- MATERIAL. 1 #, Surgutskiy Refuge, Ob’ River Basin, dula ulmaria, Plagiomnium sp., Tomenthypnum sp. etc., at flood- Materikovyi Pasl Channel, 2 km S of cordon. Mosses and litter plain lake shore, 30.X.1998, leg. A.R.; 1 #, right confluent of on swamp with Sphagnum spp., Carex spp., Eriophorum sp., Bolshoy Yugan River, 3 km SW of cordon Kamennyi. Steep Ledum , Betula ?rotundifolia , Aulacomnium sp., Hypnum sp., loamy river bank: Carex spp., Gramineae, sparse Filipendula Polytrichum sp., sparse Pinus sylvestris, Betula sp., Populus tremu- ulmaria , Vicia sp., Veronica ?longifolia etc., 21.VIII.1999, leg. la etc., 09.VIII.2000, leg. A.R. A.R.; 1 $, Bolshoy Yugan River, near cordon Kamennyi. Water- 2 ##, 1 $, Yuganskiy Reserve, Nyogus’yakh River Basin logged forest with Picea , Abies , Pinus sylvestris, young Pinus near Petchpan’yakh River mouth. Mosses and litter on large sibirica, aspen, Betula, Ledum , Hylocomium splendens , Pleuro- swamp: Carex spp., Comarum palustre, Equisetum sp., Eriopho- zium schreberi , Sphagnum spp., Polytrichum spp., Carex spp., rum sp., Gramineae, Rumex sp., ?Aulacomnium sp., Plagiomni- Gramineae, Linnaea borealis, Vaccinium vitis-idaea, V. myrtillus, um sp., Ptilium crista-castrensis, Sphagnum sp., Chamaenerium 24.VIII.1999, leg. A.R.; 1 $, Malyi Yugan River Basin, 3–5 km angustifolium, sparse Betula & Salix sp., spots of dwarf birch SW of cordon at Kol-Kotchen-Yagun River, near lake. Moss on hummocks etc., 11.IX.2000, leg. A.R.; 2 ##, 3 $$, and litter in pine forest with Betula, Pinus sibirica , Ledum, Nyogus’yakh River Basin near Petchpan’yakh River mouth. Chamaedaphne calyculata, Vaccinium vitis-idaea, Sphagnum spp., Mosses and litter on large open swamp: Sphagnum ?angustifo- Pleurozium schreberi, Dicranum sp., Polytrichum commune (here lium , Sph. ?girgensohnii , Sph. ?russowii , Sph. sp., dwarf birch, and there) et al., 14.IX.1999, leg. A.R.; 1 $, Malyi Yugan River Oxycoccus spp., Gramineae, Carex spp., Comarum palustre, Basin, 3–5 km SW of cordon at Kol-Kotchen-Yagun River, Equisetum sp., ?Aulacomnium sp., Plagiomnium sp., Ptilium crista- near lake. Mosses on swamp near N shore of lake: Sphagnum castrensis etc., 24.IX.2000, leg. A.R.; 1 #, 1 $, Ay-Magromsy spp., Carex spp., Eriophorum sp., Chamaedaphne calyculata, River Basin, Medvezhyi Ugol cordon, sweeping on Carex Andromeda polifolia , Oxycoccus spp., Vaccinium uliginosum et rostrata , C. spp., mosses and litter at swamp border: Carex al., 18.IX.1999, leg. A.R.; 2 ##, 1 $, Nyogus’yakh River Basin rostrata , Sphagnum girgensohnii , Sph. spp. etc., among sparse near Petchpan’yakh River mouth. Mosses and litter on large young birches, (+7C?), 15.IX.2002, leg. A.R.; 1 #, Ay-Magromsy swamp: Carex spp., Comarum palustre, Equisetum sp., Eriopho- River Basin, Medvezhyi Ugol cordon, sweeping on Carex rum sp., Gramineae, Rumex sp., ?Aulacomnium sp., Plagiomnium rostrata , C. spp., Gramineae, Eriophorum sp. etc., mosses and sp., Ptilium crista-castrensis , Sphagnum sp., Chamaenerium an- litter at border of sedge-mossy swamp (including rill source): gustifolium, Betula and Salix sp. etc., 13.IX.2000, leg. A.R.; 2 ##, Carex rostrata, C. spp., Sphagnum girgensohnii, Sph. spp., Equise- Vuya-Yany River near Ay-Vuya-Yany River mouth. Mosses and tum spp., Oxycoccus spp., Chamaedaphne calyculata, Comarum litter on swamp: Pinus sylvestris , Ledum palustre , Andromeda palustre , Calamagrostis sp., Menyanthes trifoliata etc., among polifolia, Chamaedaphne calyculata, Oxycoccus spp., Sphagnum sparse young birches, 19.IX.2002, leg. A.R.; 2 ##, Ay-Magrom- magellanicum, Sph. ?angustifolium , Eriophorum sp. etc., sy River Basin, Medvezhyi Ugol cordon, mosses on sedge-mossy 27.VIII.2000, leg. A.R.; 1 $, Nyogus’yakh River Basin near swamp: Carex rostrata, C. spp., Sphagnum ?angustifolium , Sph. Petchpan’yakh River mouth. Mosses and litter in swampy girgensohnii , Sph. sp., Oxycoccus spp., (+8C?), 26.IX.2002, leg. flood-plain forest, between Betula, Abies sibirica, Picea obovata, A.R.; 2 ##, Malyi Yugan River, near cordon below Maalyakh Salix sp., Pinus sibirica etc.: tussocks of Carex spp., Filipendula River mouth, mosses and litter on swamp with Sphagnum ulmaria, Gramineae, Comarum palustre , Menyanthes trifoliata, magellanicum, Sph. ?balticum, Sph. fuscum, Sph. spp., Carex sp., Plagiomnium sp., Aulacomnium sp., Climacium dendroides etc., Eriophorum sp., Chamaedaphne calyculata, Ledum palustre, An- 12.IX.2000, leg. A.R.; 1 $, Bolshoy Yugan River, 6–7 km below 46 A.V. Tanasevitch

Sugmuten’yakh River mouth. Bank of old channel: tussocks chamaemorus , Carex spp., Eriophorum sp., Poaceae, Sphagnum with Carex spp., Gramineae, small admixture of Filipendula ?balticum, Sph. ?russowii, Sph. magellanicum, Sph. fuscum, Pleuro- ulmaria between sparse Salix sp. and Betula, 17.VIII.2001, leg. zium schreberi, Dicranum polysetum etc., 12.VI.2004, leg. A.R. A.R.; 1 #, Bolshoy Yugan River, 6–7 km below Sugmuten’yakh 2 $$, Luginetsky, Picea , Abies & Betula forest, in moss, River mouth. Mosses and litter on overgrown swamp and 26.VIII.1998, leg. A.T. swamped winter road with Pinus sylvestris, Betula, Chamaedaphne, 4 ##, 12 $$, Nefteyugansk, mixed forests: Abies , Pinus Ledum , Eriophorum sp., Sphagnum fuscum , Sph . magellanicum, sibirica, Picea, Betula with Equisetum, Vaccinium spp., Empetrum, Sph. ?balticum, Sph. spp., Oxycoccus sp., Vaccinium uliginosum, mosses, VIII.2001, leg. A.T. Pleurozium schreberi etc., 20.VIII.2001, leg. A.R.; 1 $, near S DISTRIBUTION. Widespread in Europe, known from border of buffer area of rill between Kolynlor Lake and the Crimea, the Caucasus and Middle Asia; in Siberia dis- Koimlor (Krimlor) Lake. Mosses and litter under Pinus sibirica tributed from the Urals to Cisokhotia and Kamchatka; through in forest at the rill bank: Lycopodium sp., ferns, Linnaea the mountains of South Siberia eastward to the southern part borealis , Vaccinium vitis-idaea , Orthilia secunda , Pleurozium of Khabarovsk Prov., Maritime Prov.; Mongolia, China, schreberi, Hylocomium splendens, Dicranum sp., Polytrichum sp., Calamagrostis sp., sparse Ledum palustre etc., 04.IX.2001, leg. Japan. This is the first record in West Siberia. A.R.; 2 $$, Kol-Kotchen-Yagun River Basin (confluent of Malyi Yugan River), lake near cordon. Swampy birch-wilow sparse Ceratinella scabrosa (O. Pickard-Cambridge, 1871) forest by SE shore of lake: tussocks of Carex spp. with a touch of Calamagrostis sp., Comarum palustre, Sphagnum squarrosum, MATERIAL. 1 #, Tobolsk Field Research Station, mosses Sph. centrale, Sph. spp. etc., as well as mosses and litter between and litter under Betula with Equisetum sylvaticum, Pyrola sp., those, 20.IX.2001, leg. A.R.; 2 ##, 1 $, Kol-Kotchen-Yagun Lathyrus sp. etc., on gentle slope near crest of Spartakovskaya River Basin (confluent of Malyi Yugan River), lake near Mt., 06.VI.2004, leg. A.R. cordon. Mosses and litter under Pinus sylvestris, P. sibirica, Picea DISTRIBUTION. Widespread in Europe, occurs also in obovata in forest near cordon: Ledum palustre, Chamaedaphne the Caucasus and the Urals; in Asia known in West Siberia, calyculata , Pleurozium schreberi , Hylocomium splendens , Di- Altai Mts (South Siberia), the southern part of Khabarovsk cranum sp., Polytrichum commune , Vaccinium vitis-idaea , V. myrtillus, spots of Sphagnum girgensohnii and Sph. russowii et al., Prov., and Japan. This is the first record in West Siberia. 25.IX.2001, leg. A.R.; 1 $, Bolshoy Yugan River near Kamennyi cordon, swamped birch forest with Sphagnum spp., Carex sp., Ceratinella wideri (Thorell, 1871) Gramineae, Ledum palustre etc., 15.VIII.2002, leg. A.R.; 1 $, (buffer area), right riverside of Bolshoy Yugan River near MATERIAL. 1 #, Yuganskiy Reserve, near Vuya-Yany cordon Kamennyi. Mosses and litter in forest with Picea River mouth. Moss and litter at hummocks at bank of old obovata, Abies sibirica, Pinus sibirica, Carex spp. and Gramineae channel with Carex spp., Comarum palustre, Filipendula ulmar- with Sphagnum girgensohnii , Sph. spp., Polytrichum commune ia, Gramineae, Plagiomnium sp. etc., 12.VIII.1998, leg. A.R.; 1 #, etc., in waterlogged birch forest on flood-plain, 21.VIII.2002, Malyi Yugan River Basin, Kol-Kotchen-Yagun River, 3–4 km S leg. A.R.; 1 #, Ay-Magromsy River Basin, Medvezhyi Ugol of cordon. Moss and litter at river bank: Padus, Salix sp., Spiraea cordon, mosses and litter near rill: Plagiomnium sp., Sphagnum spp., Filipendula ulmaria, Ribes nigrum, Gallium sp., Carex spp., squarrosum , Sph . centrale , Sph . girgensohnii , Sph . warnstorfii, Gramineae, Equisetum spp., ?Aulacomnium sp., Plagiomnium sp., Calamagrostis sp., Carex sp. among sparse Salix sp. and birches, Climacium dendroides et al., 13.IX.1999, leg. A.R.; 1 #, 2 $$, (+6C?), 27.IX.2002, leg. A.R.; 1 $, Ay-Magromsy River Basin, 3 Vuya-Yany River near Ay-Vuya-Yany River mouth. Flood-plain km N of Medvezhyi Ugol cordon, mosses and litter in hum- depression: Filipendula ulmaria, Carex sp., Gramineae, Spiraea mocky with Carex sp., Filipendula ulmaria, Comarum palustre, sp., Ribes nigrum, Comarum palustre, Sphagnum squarrosum, Sph. Plagiomnium sp., Climacium dendroides, Sphagnum russowii, Sph. girgensohnii, Climacium dendroides, Aulacomnium sp., Plagiomni- spp. etc., on flood-plain of rill, 03.X.2002, leg. A.R.; 2 $$, Malyi um sp. etc., 24.VIII.2000, leg. A.R.; 1 #, Vuya-Yany River near Yugan River, near cordon below Maalyakh River mouth, Ay-Vuya-Yany River mouth. Swamped flood-plain of left river mosses and litter on swamp with Sphagnum magellanicum, Sph. bank: Carex spp., Comarum palustre, Filipendula ulmaria, Spi- ?balticum , Sph . fuscum , Sph. spp., Carex sp., Eriophorum sp., raea sp., Ribes nigrum, Sphagnum squarrosum, Sph. ?girgensohnii, Chamaedaphne calyculata , Ledum palustre , Andromeda polifo- Plagiomnium sp., Aulacomnium sp. etc., 27.VIII.2000, leg. A.R.; 2 lia, Oxycoccus sp., sparse Pinus sylvestris etc., and in sweeping, ##, Nyogus’yakh River near Kogontchina-2 field research 20.VIII.2003, leg. A.R. station. Swampy bank of old river channel: Carex hummocks, 1 $, Tobolsk Field Research Station, mosses and litter in Gramineae, Filipendula ulmaria, Comarum palustre, Padus, Rosa forest with Abies, Picea, Betula, Carex globularis, Calamagrostis sp., Salix sp., true mosses etc., 01.IX.2000, leg. A.R.; 1 $, sp., Equisetum sylvaticum , Pyrola sp., Maianthemum bifolium, Nyogus’yakh River Basin near Petchpan’yakh River mouth. Linnaea borealis , Oxalis acetosella , Solidago sp., Lathyrus sp., Mosses and litter on large swamp: Carex spp., Comarum palus- Lonicera sp., Hylocomium splendens , Pleurozium schreberi , Di- tre, Equisetum sp., Eriophorum sp., Gramineae, Rumex sp., ?Aula- cranum polysetum etc., 13.IX.2003, leg. A.R.; 2 ##, 1 $, mosses comnium sp., Plagiomnium sp., Ptilium crista-castrensis , Sphag- and litter under Betula, Pinus sibirica, Abies with Carex globu- num sp., Chamaenerium angustifolium, Betula and Salix sp. etc., laris , Linnaea borealis , Maianthemum bifolium , Vaccinium vitis- 13.IX.2000, leg. A.R.; 1 #, Nyogus’yakh River Basin near idaea, V. myrtillus, Equisetum sylvaticum, Hylocomium splendens, Petchpan’yakh River mouth. Mosses and litter on large open Pleurozium schreberi, Dicranum polysetum, Sphagnum girgensoh- swamp: Sphagnum ?angustifolium, Sph. ?girgensohnii, Sph. ?rus- nii , Sph . russowii , Sph . warnstorfii , Lycopodium sp., Diplazium sowii, Sph. sp., dwarf birch, Oxycoccus spp., Gramineae, Carex sibiricum, Oxalis acetosella, Rubus idaeus, R. saxatilis etc., 24.IX.2003, spp., Comarum palustre, Equisetum sp., ?Aulacomnium sp., Plagi- leg. A.R.; 1 $, mosses and litter under Pinus sibirica, Abies, Betula omnium sp., Ptilium crista-castrensis etc., 24.IX.2000, leg. A.R.; 1 in swamped sparse forest with Sphagnum girgensohnii , Sph. #, Vuya-Yany River near Ay-Vuya-Yany River mouth. Flood- ?russowii, Sph. centrale, Sph. squarrosum, Linnaea borealis, Oxalis plain lake shore: Carex spp., Filipendula ulmaria, Gramineae, acetosella, Equisetum sylvaticum, Carex globularis, C. sp., Pleuro- Aulacomnium sp., Climacium dendroides , Comarum palustre, zium schreberi etc., 21.IX.2003, leg. A.R.; 1 $, mosses and litter 18.VIII.2000, leg. A.R.; 2 ##, Vuya-Yany River near Ay-Vuya- and in sweeping on small swamp with Carex spp., Poaceae, Yany River mouth. Flood-plain lake shore: young Betula and Sphagnum girgensohnii , Sph . squarrosum , Sph. ?riparium , Sph. Populus tremula , Carex spp., Filipendula ulmaria, Gramineae, ?balticum , Sph . centrale etc., 10.VI.2004, leg. A.R.; 1 $, near Sphagnum girgensohnii, Aulacomnium sp., Climacium dendroides, Gornoslinkino, right bank of Irtysh River, mosses and litter in Comarum palustre, 23.VIII.2000, leg. A.R.; 1 $, Bolshoy Yugan Pine-Ledum sparse forest with Chamaedaphne calyculata, Salix River, 6–7 km below Sugmuten’yakh River mouth. Bank of old spp., Vaccinium uliginosum, V. vitis-idaea, Oxycoccus sp., Rubus channel: tussocks with Carex spp., Gramineae, small admixture Linyphiid spiders of the West Siberian Plain 47 of Filipendula ulmaria between sparse Salix sp. and Betula, Sphagnum fuscum, Sph. magellanicum, Sph. ?balticum, Sph. spp., 17.VIII.2001, leg. A.R.; 1 #, Bolshoy Yugan River, 6–7 km Oxycoccus sp., Vaccinium uliginosum, Pleurozium schreberi etc., below Sugmuten’yakh River mouth. Mosses and litter on 20.VIII.2001, leg. A.R. overgrown swamp and swamped winter road with Pinus sylves- 1 $, Luginetsky, Picea , Populus & Betula forest, in litter, tris, Betula, Chamaedaphne, Ledum, Eriophorum sp., Sphagnum 22–28.VIII.1998, leg. A.T.; 1 $, Picea & Betula forest, in moss, fuscum, Sph. magellanicum, Sph. ?balticum, Sph. spp., Oxycoccus 21.VIII.1998, leg. A.T. sp., Vaccinium uliginosum, Pleurozium schreberi etc., 20.VIII.2001, 1 $, Tyumen, VI.2000, leg. U. leg. A.R.; 1 #, Bolshoy Yugan River, 6–7 km below DISTRIBUTION. Widespread in Europe; in Siberia Sugmuten’yakh River mouth. Mosses and litter between Carex known from the Urals to Cisokhotia; through eastern Kaza- spp., Gramineae, Filipendula ulmaria, Spiraea sp., with Plagiom- khstan via the mountains of South Siberia eastward to Kha- nium sp., Climacium dendroides etc., on swamped forest road, barovsk Prov., recorded also in Sakhalin. 22.VIII.2001, leg. A.R.; 1 $, near S border of buffer area of Yuganskiy Reserve, rill between Kolynlor Lake and Koimlor (Krimlor) Lake. Rill bank near source: tussocks with Carex spp. Decipiphantes decipiens (L. Koch, 1879) and Gramineae, Comarum palustre, Sphagnum squarrosum, Sph. girgensohnii, Sph. spp., Plagiomnium sp. etc., 04.IX.2001, leg. A.R.; 1996 Lepthyphantes decipiens, Esyunin, Ekosistemy Srednego 1 #, 2 $$, Ay-Magromsy River Basin, Medvezhyi Ugol cordon, Priob’ya, 1, p. 70. mosses and litter at rill bank and on flood-plain of rill: Calamagrostis sp., Ribes spp., Rosa sp., Filipendula ulmaria, MATERIAL. 1 #, 2 $$, Surgutskiy Refuge, Ob’ River Basin, Matteuccia struthiopteris, Equisetum sylvaticum, Sphagnum squar- Materikovyi Pasl Channel. Moss and litter in forest at high rosum, Sph. girgensohnii, Sph. spp., Plagiomnium sp. etc., 20.IX.2002, river bank with Abies , Picea , Populus tremula, young Pinus leg. A.R.; 1 #, Ay-Magromsy River Basin, Medvezhyi Ugol sibirica , Hylocomium splendens , Pleurozium schreberi , Polytri- cordon, mosses and litter at southern border of sedge-mossy chum commune , Maianthemum bifolium , Vaccinium vitis-idaea, swamp: Carex rostrata , C. spp., Comarum palustre , Equisetum Lycopodium sp., Diphasiastrum sp., Equisetum sylvaticum , Lin- spp., Sphagnum girgensohnii , Sph. spp., Plagiomnium sp., Aula- naea borealis etc., 05.VIII.2000, leg. A.R.; 2 $$, Ob’ River Basin, comnium sp., Calamagrostis sp., Menyanthes trifoliata etc., among Materikovyi Pasl Channel. Moss and litter in forest with Abies, sparse young birches, 21.IX.2002, leg. A.R.; 1 #, Malyi Yugan Picea, Populus tremula, Betula, young Pinus sibirica, Pleurozium River, cordon below Lyarykni River mouth, open swamp with schreberi , Hylocomium splendens , Dicranum sp., Polytrichum tussocks of Carex spp. and Calamagrostis sp. with Comarum commune, Equisetum sylvaticum, Linnaea borealis, Oxalis aceto- palustre, Salix sp., Sphagnum squarrosum, Sph. spp., ?Aulacomni- sella, Trientalis europaea etc., 07.VIII.2000, leg. A.R.; um sp. etc., between sparse young Betula, 17.VIII.2003, leg. A.R. 1 #, Yuganskiy Reserve, right confluent of Bolshoy Yugan 1 #, 1 $, Tobolsk Field Research Station, plant debris and River, 3 km SW of cordon Kamennyi. Moss and litter in flood- leaf litter at margin of inundated flood-plain of Varpak River: plain forest: Picea, Betula, Abies, Pinus sibirica, Sorbus, Vaccinium Carex sp., Poaceae, Lythrum sp., Salix sp. on gentle slope, aspen vitis-idaea, V. myrtillus, Maianthemum bifolium, Linnaea borealis, trees on steep slope, depression in the ground with aspen leaf Hylocomium splendens, Pleurozium schreberi, Dicranum sp., Poly- drift, 07.VI.2004, leg. A.R.; 2 ##, mosses and plant debris in trichum commune, 21.VIII.1999, leg. A.R.; 1 #, Vuya-Yany swampy birch-willow sparse forest of flood-plain near left bank River near Ay-Vuya-Yany River mouth. Mosses and litter in of Irtysh River: Carex spp., Calamagrostis sp., Sphagnum ?balti- forest at crest line: Pinus sibirica , P . sylvestris , Picea obovata, cum , Sph. ?girgensohnii , Sph . squarrosum , Comarum palustre, Abies sibirica, Vaccinium vitis-idaea, V. myrtillus, Linnaea borea- Lythrum sp., Filipendula ulmaria , Climacium dendroides etc., lis, Trientalis europaea, Equisetum sylvaticum, Pleurozium schreberi, 09.VI.2004, leg. A.R. Hylocomium splendens , Dicranum sp., Diphasiastrum sp., 1 $, Luginetsky, swampy spruce (Picea) forest, in moss, 21.VIII.2000, leg. A.R.; 1 #, Nyogus’yakh River near Kogontch- 25.VIII.1998, leg. A.T. ina-2 field research station. Mosses and peat under Carex 1 #, Tomsk, Abies forest, in moss and litter, 15–16.VIII.1998, ?globularis near small forest swamp on island in the middle of leg. A.T. large high moor, 02.IX.2000, leg. A.R.; 1 $, Nyogus’yakh River DISTRIBUTION. Widespread in Europe, in Siberia near Kogontchina-2 field research station. Mosses and litter known from the Urals eastward to Chukotka, Cisokhotia; under Pinus sibirica, Picea obovata, Populus tremula with Lin- from eastern Kazakhstan through the mountains of South naea borealis , Vaccinium vitis-idaea , Maianthemum bifolium, Siberia eastward to Sayan. Recorded in Mongolia and Mid- Trientalis europaea, Hylocomium splendens, Pleurozium schreberi, dle Asia. This is the first record in West Siberia. Equisetum sylvaticum, Eq. pratense etc., 02.IX.2000, leg. A.R.; 3 ##, 1 $, near S border of buffer area of Yuganskiy Reserve, Koimlor (Krimlor) Lake. Litter under Picea obovata and Pinus Cnephalocotes obscurus (Blackwall, 1834) sibirica with Lycopodium sp., Linnaea borealis, ferns, Gramineae, Trientalis europaea, sparse Ledum palustre etc., in moist forest 1996 Cnephalocotes obscurus, Esyunin, Ekosistemy Srednego near lake shore, 02.IX.2001, leg. A.R.; 2 ##, Kol-Kotchen- Priob’ya, 1, p. 71. Yagun River (confluent of Malyi Yugan River) E of cordon. Loamy river bank with Carex spp., Gramineae, Equisetum spp., MATERIAL. 1 #, Yuganskiy Reserve, Nyogus’yakh River small Rosa sp. & Salix sp. etc., 16.IX.2001, leg. A.R.; 1 #, Kol- near Kogontchina-2 field research station. Mosses and litter on Kotchen-Yagun River Basin (confluent of Malyi Yugan River), swamp with Pinus sylvestris, Betula, Ledum palustre, Andromeda lake near cordon. Mosses and litter under Pinus sylvestris, P. polifolia, Chamaedaphne calyculata, Vaccinium uliginosum, Erio- sibirica and elfin wood of Abies sibirica with Vaccinium vitis- phorum sp., Oxycoccus palustris, Sphagnum fuscum, Sph. magel- idaea, V. myrtillus, Linnaea borealis, Pleurozium schreberi, Hylo- lanicum, Sph. ?angustifolium, Sph. spp., Rubus chamaemorus etc., comium splendens, Dicranum sp., Lycopodium sp., sparse Ledum 31.VIII.2000, leg. A.R.; 1 #, Nyogus’yakh River Basin near palustre et al., in forest on hill crest NW of lake. 01.X.2001, leg. Petchpan’yakh River mouth. Mosses and litter on large swamp: A.R.; 1 #, right riverside of Bolshoy Yugan River near cordon Carex spp., Comarum palustre , Equisetum sp., Eriophorum sp., Kamennyi. Mosses and litter in forest with Picea obovata, Abies Gramineae, Rumex sp., ?Aulacomnium sp., Plagiomnium sp., sibirica, Pinus sibirica, Carex spp. and Gramineae with Sphag- Ptilium crista-castrensis, Sphagnum sp., Chamaenerium angustifo- num girgensohnii, Sph. spp., Polytrichum commune etc., in water- lium, sparse Betula & Salix sp., spots of dwarf birch on logged birch forest on flood-plain, 21.VIII.2002, leg. A.R.; 3 $$, hummocks etc., 11.IX.2000, leg. A.R.; 2 $$, Bolshoy Yugan Ay-Magromsy River Basin, Medvezhyi Ugol cordon, mosses and River, 6–7 km below Sugmuten’yakh River mouth. Mosses and litter under Pinus sylvestris, P. sibirica, Picea obovata, Betula with litter on overgrown swamp and swamped winter road with Vaccinium vitis-idaea, V. myrtillus, Pleurozium schreberi, Hyloco- Pinus sylvestris, Betula, Chamaedaphne, Ledum, Eriophorum sp., mium splendens , Dicranum polysetum , Sphagnum ?warnstorfii, 48 A.V. Tanasevitch

Linnaea borealis, Equisetum sylvaticum etc., under aspen trunk, Diplocentria bidentata (Emerton, 1882) and under mosses, lichens, bark scales on bases of pine trees, 18.IX.2002, leg. A.R.; 2 ##, 3 $$, Ay-Magromsy River Basin, Medvezhyi Ugol cordon, mosses and litter under Pinus sylves- 1996 Diplocentria bidentata, Esyunin, Ekosistemy Srednego tris, Picea obovata, Pinus sibirica with Ledum palustre, Vaccinium Priob’ya, 1, p. 71. vitis-idaea , Linnaea borealis , Pleurozium schreberi , Dicranum polysetum, (+4C?), 29.IX.2002, leg. A.R.; 1 $, Ay-Magromsy MATERIAL. 3 $$, Yuganskiy Reserve, Nyogus’yakh River, River Basin, 3 km N of Medvezhyi Ugol cordon, mosses and cordon Bisarkina. Parching rill near cordon: mosses and litter litter under Larix sibirica and Juniperus sp. among Abies, Picea, in rill-bed and by banks (Abies , Picea , Salix, Padus , Betula, Betula with Hylocomium splendens , Pleurozium schreberi , Di- Populus tremula , Linnaea , Trientalis , Oxalis , Polytrichum com- cranum polysetum, Linnaea borealis, Polytrichum commune, Dipha- mune , Carex spp., Equisetum sylvaticum , Sphagnum ?riparium, siastrum complanatum , Vaccinium vitis-idaea , V. myrtillus etc., Sph. ?girgensohnii etc.), 22.X.1998, leg. A.R.; 2 ##, 5 $$, on gentle slope, 03.X.2002, leg. A.R.; 1 $, Malyi Yugan River, Nyogus’yakh River, cordon Bisarkina. Mosses and litter on near cordon below Lyarykni River mouth, mosses and litter in slope (from rill-bed to crest) near cordon: Abies, Picea, Pinus forest near river bank: Pleurozium schreberi, Hylocomium splen- sibirica, Betula, Populus tremula, Sorbus, Vaccinium vitis-idaeae, dens, Dicranum polysetum, sparse Polytrichum commune, spots V. myrtillus, Equisetum sylvaticum, Pleurozium schreberi, Hyloco- of Sphagnum girgensohnii , Linnaea borealis , Vaccinium vitis- mium splendens , Maianthemum , Trientalis , Carex ?globularis, idaea, Equisetum sylvaticum, Maianthemum bifolium, Carex glob- graminoids etc., 22.X.1998, leg. A.R.; 2 $$, Nyogus’yakh River, ularis, Rubus saxatilis, Trientalis europaea, Poaceae, Oxalis aceto- cordon Bisarkina. Mosses and litter in flood-plane forest and at sella etc., under Pinus sibirica, P . sylvestris, Abies, Picea, Betula, natural levee with Abies , Picea , Pinus sibirica , Betula, Oxalis, Populus tremula, 18.VIII.2003, leg. A.R. Equisetum sylvaticum , Eq . pratense , Maianthemum , Trientalis, 2 ##, Tobolsk Field Research Station, mosses and litter in Linnaea , Hylocomium splendens , Pleurozium schreberi, placely forest with Abies, Picea, Betula, Carex globularis, Calamagrostis Sphagnum sp. (girgensohnii or russowii) etc., 24.X.1998, leg. A.R.; sp., Equisetum sylvaticum , Pyrola sp., Maianthemum bifolium, 4 $$, Malyi Yugan River Basin, near Koimlor Lake. Mosses and Linnaea borealis , Oxalis acetosella , Solidago sp., Lathyrus sp., litter on swamp: Sphagnum fuscum , Sph. spp., Polytrichum Lonicera sp., Hylocomium splendens, Pleurozium schreberi, Di- strictum, Pleurozium schreberi, Oxycoccus spp., Rubus chamaemorus, cranum polysetum etc., 13.IX.2003, leg. A.R.; 1 #, 2 $$, in Vaccinium uliginosum, Ledum, Chamaedaphne, Andromeda, young mosses and litter under Betula , Picea , Alnus with Pyrola sp., Pinus sylvestris etc., 10.VIII.1998, leg. A.R.; 3 $$, Nyogus’yakh Carex globularis, Poaceae, Equisetum sylvaticum, Linnaea borea- River, cordon Bisarkina. Mosses and litter at forest lake shore: lis, Pleurozium schreberi, Dicranum polysetum, Oxalis acetosella, Carex spp., Filipendula ulmaria, Gramineae, Equisetum spp., Galium sp., Aegopodium podagraria , Rubus idaeus , R . saxatilis ferns, Plagiomnium sp., Climacium dendroides, Sphagnum squar- etc., on slope (from foot to top), 28.IX.2003, leg. A.R.; 1 #, rosum , Tomenthypnum sp. etc., 26.X.1998, leg. A.R.; 2 $$, mosses and litter on plate crest near bank of Irtysh River: birch Nyogus’yakh River, cordon Bisarkina. Moss and litter under forest with sparse young Pinus sibirica, Abies, Tilia, Sorbus, Carex Betula, Picea, Pinus sibirica on swamp amid flood plain forest globularis, Poaceae, Pyrola sp., Equisetum sylvaticum etc., 10.IX.2003, near foot of slope, 27.X.1998, leg. A.R.; 6 $$, Nyogus’yakh River leg. A.R. Basin, forest road, 3 km ENE of cordon Bisarkina. Moss and 1 #, 2 $$, Samotlor, Pinus forest, in moss and lichen, Aug. litter in forest with Picea , Pinus sibirica , P . sylvestris , Betula, 1999, leg. A.T. Equisetum pratense, Eq . sylvaticum, Pleurozium schreberi, Hylo- 3 ##, 2 $$, Luginetsky, Abies, Picea, Betula forest, in moss, comium splendens, Vaccinium myrtillus, V. vitis-idaea, Sphagnum VIII.1998, leg. A.T.; 3 ##, 5 $$, Picea & Betula forest, in moss, russowii (placely), 28.X.1998, leg. A.R.; 3 ##, 1 $, Nyogus’yakh 22–28.VIII.1998, leg. A.T.; 1 $, Abies & Picea forest, log, unger River, cordon Bisarkina. Parching rill near cordon: mosses and bark, 22–28.VIII.1998, leg. A.T.; 2 ##, 4 $$, swampy spruce litter in rill-bed and by banks (Carex spp., Equisetum sylvati- (Picea) forest, in moss, 25.VIII.1998, leg. A.T.; 1 #, 1 $, Picea, cum, Sphagnum ?riparium, Sph. ?girgensohnii, Polytrichum com- Abies & Betula forest, in moss, 26.VIII.1998, leg. A.T. mune, Filipendula ulmaria, Gramineae, Veratrum, Linnaea, Ma- 3 ##, 2 $$, Nefteyugansk, mixed forests: Abies , Pinus ianthemum, Trientalis, Tomenthypnum sp., Plagiomnium sp. etc.), sibirica, Picea, Betula with Equisetum, Vaccinium spp., Empetrum, 31.X.1998, leg. A.R.; 1 #, 1 $, Nyogus’yakh River, cordon mosses, VIII.2001, leg. A.T. Bisarkina. Mosses and litter on slope near parched rill about 1 $, Tyumen, VI.2000, leg. U. cordon: Abies , Picea , Betula, Sorbus , Hylocomium splendens, DISTRIBUTION. Northern Europe, in Siberia known Pleurozium schreberi, Ptilium, Maianthemum, Trientalis, Linnaea, from the Urals eastward to Yenisey River, through the moun- Equisetum sylvaticum, Polytrichum commune, Oxalis etc., 31.X.1998, tains of South Siberia eastward to the Lake Baikal region. leg. A.R.; 2 ##, 3 $$, Bolshoy Yugan River, near cordon Recorded in Mongolia. Kamennyi. Moss and litter in pine forest: Pinus sylvestris, young Pinus sibirica, Ledum palustre, Vaccinium vitis-idaea, V. myrtillus, Dicymbium nigrum (Blackwall, 1834) Linnaea borealis , Hylocomium splendens , Pleurozium schreberi, Dicranum sp., Polytrichum commune etc., 20.VIII.1999, leg. A.R.; 2 $$, Bolshoy Yugan River, near cordon Kamennyi. Water- MATERIAL. 2 $$, Tobolsk Field Research Station, flood- logged forest with Picea , Abies , Pinus sylvestris, young Pinus plain swamps of left bank of Irtysh River with Salix sp., Betula, sibirica, aspen, Betula, Ledum , Hylocomium splendens , Pleuro- Carex spp., Comarum palustre, Climacium dendroides, Aulacom- zium schreberi , Sphagnum spp., Polytrichum spp., Carex spp., nium palustre, Sphagnum girgensohnii, Sph. ?russowii, Sph . cen- Gramineae, Linnaea borealis, Vaccinium vitis-idaea, V. myrtillus, trale, Sph. squarrosum etc., 27.IX.2003, leg. A.R.; 1 $, mosses and 24.VIII.1999, leg. A.R.; 3 ##, Malyi Yugan River Basin, 3–5 litter among sparse Salix spp., Betula , Pinus sylvestris with km SW of cordon at Kol-Kotchen-Yagun River, near lake. Moss tussocks of Carex spp., Poaceae, Lythrum sp., Filipendula ulmar- and litter under Pinus sibirica , P . sylvestris, young Abies with ia, Climacium dendroides, isolated spots of Sphagnum squarro- Hylocomium splendens, Pleurozium schreberi, Dicranum sp., Vac- sum, Sph. sp. etc., on swamped flood-plain of left bank of Irtysh cinium myrtillus, V. vitis-idaea, Linnaea borealis, sparse Ledum River, 29.IX.2003, leg. A.R.; 1 $, in litter and mosses under Salix on low knoll, 09.IX.1999, leg. A.R.; 3 $$, Malyi Yugan River sp. with Poaceae, Carex spp., Filipendula ulmaria , Galium sp., Basin, 3–5 km SW of cordon at Kol-Kotchen-Yagun River, Climacium dendroides etc., at border of flood-plain of Varpak near lake. Moss and litter in pine forest with Betula, Pinus River, 23.IX.2003, leg. A.R. sibirica, Ledum, Chamaedaphne calyculata, Vaccinium vitis-idaea, DISTRIBUTION. Widespread in Europe, , the Sphagnum spp., Pleurozium schreberi, Dicranum sp., Polytrichum Caucasus and Middle Asia; in Siberia known from the Urals commune (here and there) et al., 14.IX.1999, leg. A.R.; 5 $$, eastward to Yenisey River; registered from China. This is Malyi Yugan River Basin, 3–5 km SW of cordon at Kol- the first record in West Siberia. Kotchen-Yagun River, near lake. Moss and litter under Pinus Linyphiid spiders of the West Siberian Plain 49 sibirica, Picea, Betula, Pinus sylvestris with Vaccinium myrtillus, ium vitis-idaea, V. myrtillus, Hylocomium splendens, Pleurozium V. vitis-idaea, Lycopodium, Equisetum sylvaticum, Rosa sp., Pleu- schreberi , Dicranum sp., Ledum palustre , Chamaedaphne caly- rozium schreberi on gentle slope, 20.IX.1999, leg. A.R.; 1 #, 2 culata et al., in forest near NE shore of lake, 01.X.2001, leg. A.R.; $$, Vuya-Yany River near Ay-Vuya-Yany River mouth. Mosses 1 #, 2 $$, Ay-Magromsy River Basin, Medvezhyi Ugol cordon, and litter in forest at crest line: Pinus sibirica, P. sylvestris, Picea mosses and litter under Populus tremula , Pinus sibirica , Picea obovata , Abies sibirica , Vaccinium vitis-idaea , V. myrtillus , Lin- obovata , Pinus sylvestris with Abies thicket, Hylocomium splen- naea borealis, Trientalis europaea, Equisetum sylvaticum, Pleuro- dens, Pleurozium schreberi, Dicranum polysetum, Polytrichum com- zium schreberi, Hylocomium splendens, Dicranum sp., Diphasias- mune, Equisetum sylvaticum, Vaccinium vitis-idaea, Linnaea bore- trum sp., 18.VIII.2000, leg. A.R.; 3 $$, Vuya-Yany River near Ay- alis etc., (+3C?, after first snowfall), 13.IX.2002, leg. A.R.; 2 ##, Vuya-Yany River mouth. Mosses and litter in forest at crest 3 $$, Ay-Magromsy River Basin, Medvezhyi Ugol cordon, mosses line: Pinus sibirica , P . sylvestris , Picea obovata , Abies sibirica, and litter under Pinus sylvestris, P. sibirica, Picea obovata, Betula Vaccinium vitis-idaea , V. myrtillus , Linnaea borealis , Trientalis with Vaccinium vitis-idaea , V. myrtillus , Pleurozium schreberi, europaea, Equisetum sylvaticum, Pleurozium schreberi, Hylocomi- Hylocomium splendens , Dicranum polysetum , Sphagnum ?warn- um splendens, Dicranum sp., Diphasiastrum sp., 21.VIII.2000, leg. storfii, Linnaea borealis, Equisetum sylvaticum etc., under aspen A.R.; 3 ##, 4 $$, Vuya-Yany River Basin near Ay-Vuya-Yany trunk, and under mosses, lichens, bark scales on bases of pine River mouth (2 km E of cordon). Mosses and litter under Picea trees, 18.IX.2002, leg. A.R.; 1 #, Ay-Magromsy River Basin, obovata, Pinus sibirica, P. sylvestris, Betula on flood-plain of rill Medvezhyi Ugol cordon, mosses and litter at rill bank and on with Pleurozium schreberi , Hylocomium splendens , Sphagnum flood-plain of rill: Calamagrostis sp., Ribes spp., Rosa sp., Filipen- girgensohnii, Polytrichum commune, Equisetum sylvaticum, Carex dula ulmaria , Matteuccia struthiopteris , Equisetum sylvaticum, ?globularis, Linnaea borealis, Vaccinium vitis-idaea, Oxalis aceto- Sphagnum squarrosum , Sph . girgensohnii , Sph. spp., Plagiomnium sella etc., 21.VIII.2000, leg. A.R.; 2 $$, Nyogus’yakh River near sp. etc., 20.IX.2002, leg. A.R.; 1 $, Ay-Magromsy River Basin, Kogontchina-2 field research station. Mosses and litter under Medvezhyi Ugol cordon, mosses and litter under Betula and Betula, Abies sibirica, Picea obovata, Pinus sibirica with Hyloco- Pinus sylvestris on swampy plate at border of the reserve (about 1 mium splendens , Linnaea borealis , Oxalis acetosella , Majanthe- km N of the cordon) with Hylocomium splendens , Pleurozium mum bifolium , Pyrola sp., Trientalis europaea , Equisetum prat- schreberi, Carex globularis, Polytrichum commune, Sphagnum spp., ense , Eq . sylvaticum etc., on 1st fluvial terrace above flood- Linnaea borealis , Equisetum sylvaticum etc., (+6C?), 27.IX.2002, plain, 29.VIII.2000, leg. A.R.; 2 ##, 5 $$, Yuganskiy Reserve, leg. A.R.; 1 $, Ay-Magromsy River Basin, 1 km N of Medvezhyi Nyogus’yakh River near Kogontchina-2 field research station. Ugol cordon, mosses and litter on flood-plain of rill with Mosses and peat under Carex ?globularis near small forest Calamagrostis sp., Filipendula ulmaria , Spiraea sp., Equisetum swamp on island in the middle of large high moor, 02.IX.2000, sylvaticum, Plagiomnium sp., Sphagnum spp. etc., (+5C?), 05.X.2002, leg. A.R.; 2 $$, Nyogus’yakh River near Petchpan’yakh River leg. A.R.; 3 ##, 6 $$, Ay-Magromsy River Basin, Medvezhyi mouth. Mosses and litter under Abies sibirica , Betula , Pinus Ugol cordon, mosses and litter among Abies, Picea and Betula on sibirica , Sorbus sibirica with Hylocomium splendens , Pleurozium gentle slope near SW edge of sedge-mossy swamp: Ledum schreberi, Gramineae, Equisetum pratense, Eq. sylvaticum, Maian- palustre , Vaccinium vitis-idaea , Hylocomium splendens , Pleuro- themum bifolium, Trientalis europaea, Linnaea borealis, Vaccinium zium schreberi , Polytrichum commune , Sphagnum ?russowii , Sph. vitis-idaea etc., in flood-plain forest on natural levee, 09.IX.2000, spp. etc., (+3C?), 28.IX.2002, leg. A.R.; 4 ##, 3 $$, Malyi Yugan leg. A.R.; 6 ##, 3 $$, near S border of buffer area of Yuganskiy River, near cordon below Lyarykni River mouth, mosses and Reserve, rill between Kolynlor Lake and Koimlor (Krimlor) litter in forest near river bank: Pleurozium schreberi, Hylocomium Lake. Mosses and litter under Pinus sibirica in forest at the rill splendens , Dicranum polysetum, sparse Polytrichum commune, bank: Lycopodium sp., ferns, Linnaea borealis , Vaccinium vitis- spots of Sphagnum girgensohnii, Linnaea borealis, Vaccinium vitis- idaea, Orthilia secunda, Pleurozium schreberi, Hylocomium splen- idaea, Equisetum sylvaticum, Maianthemum bifolium, Carex globu- dens , Dicranum sp., Polytrichum sp., Calamagrostis sp., sparse laris, Rubus saxatilis, Trientalis europaea, Poaceae, Oxalis acetosel- Ledum palustre etc., 04.IX.2001, leg. A.R.; 2 $$, Kol-Kotchen- la etc., under Pinus sibirica , P . sylvestris , Abies , Picea , Betula, Yagun River (confluent of Malyi Yugan River) E of cordon. Populus tremula, 18.VIII.2003, leg. A.R. Loamy river bank with Carex spp., Gramineae, Equisetum spp., 6 $$, Tobolsk Field Research Station, mosses and litter small Rosa sp. & Salix sp. etc., 16.IX.2001, leg. A.R.; 1 #, Kol- under Betula, Pinus sibirica, Abies with Carex globularis, Linnaea Kotchen-Yagun River Basin (confluent of Malyi Yugan River), borealis, Maianthemum bifolium, Vaccinium vitis-idaea, V. myrtil- lake near cordon. Tussocks with Carex spp., Calamagrostis sp., lus , Equisetum sylvaticum , Hylocomium splendens , Pleurozium Comarum palustre between sparse Betula and Pinus sylvestris at schreberi, Dicranum polysetum, Sphagnum girgensohnii, Sph. rus- NW shore of lake: Sphagnum centrale , Sph . girgensohnii , Sph. sowii , Sph . warnstorfii , Lycopodium sp., Diplazium sibiricum, ?aongstroemii, Sph. spp., Climacium dendroides, Plagiomnium sp., Oxalis acetosella, Rubus idaeus, R. saxatilis etc., 24.IX.2003, leg. Salix sp., Spiraea sp. etc., 17.IX.2001, leg. A.R.; 2 $$, Kol-Kotchen- A.R.; 1 $, near Gornoslinkino, right bank of Irtysh River, Yagun River Basin (confluent of Malyi Yugan River), lake near mosses and litter in Pine-Ledum sparse forest with Chamaedaphne cordon. Overgrown mesotrophic swamp with Pinus sylvestris, P. calyculata, Salix spp., Vaccinium uliginosum, V. vitis-idaea, Oxy- sibirica, Betula, Picea obovata: open plots of Sphagnum girgensoh- coccus sp., Rubus chamaemorus , Carex spp., Eriophorum sp., nii , Sph . russowii , Sph. sp., Polytrichum commune with Carex Poaceae, Sphagnum ?balticum, Sph. ?russowii, Sph. magellanicum, globularis, Equisetum sylvaticum, Ledum palustre etc., 19.IX.2001, Sph . fuscum , Pleurozium schreberi , Dicranum polysetum etc., leg. A.R.; 1 $, Kol-Kotchen-Yagun River Basin (confluent of 12.VI.2004, leg. A.R. Malyi Yugan River), lake near cordon. Mosses and litter under 6 ##, 9 $$, Luginetsky, Abies, Picea, Betula forest, in moss, Pinus sylvestris, P . sibirica, Picea obovata in forest near cordon: VIII.1998, leg. A.T.; 5 ##, 12 $$ , Picea & Betula forest, in Ledum palustre, Chamaedaphne calyculata, Pleurozium schreberi, moss, 22–28.VIII.1998, leg. A.T.; 6 $$, swampy spruce (Picea) Hylocomium splendens, Dicranum sp., Polytrichum commune, Vac- forest, in moss, 25.VIII.1998, leg. A.T.; 5 ##, 8 $$, Picea, Abies cinium vitis-idaea , V. myrtillus, spots of Sphagnum girgensohnii & Betula forest, in moss, 26.VIII.1998, leg. A.T. and Sph. russowii et al., 25.IX.2001, leg. A.R.; 1 $, Kol-Kotchen- 4 ##, 13 $$, Noyabrsky, dry Pinus forest, Ledum, Vaccini- Yagun River Basin (confluent of Malyi Yugan River), lake near um vitis-idea, V. uliginosum, Empetrum, moss & lichen (Cladina cordon. Mosses and litter under Pinus sylvestris, P . sibirica and & Cetraria), 12&20.VIII.2000, leg. A.T.; 5 ##, 3 $$, dry Pinus elfin wood of Abies sibirica with Vaccinium vitis-idaea, V. myrtil- forest, Ledum, Vaccinium vitis-idea, V. uliginosum, Empetrum, in lus, Linnaea borealis, Pleurozium schreberi, Hylocomium splendens, Cladina pads, 10.VIII.2000, leg. A.T.; 2 ##, 4 $$, Picea wood, Dicranum sp., Lycopodium sp., sparse Ledum palustre et al., in moss & lichen, 16.VIII.2000, leg. A.T. forest on hill crest NW of lake, 01.X.2001, leg. A.R.; 4 ##, Kol- 11 ##, 23 $$, Nefteyugansk, mixed forests: Abies, Pinus Kotchen-Yagun River Basin (confluent of Malyi Yugan River), sibirica, Picea, Betula with Equisetum, Vaccinium spp., Empetrum, lake near cordon. Mosses and litter under Pinus sibirica , P. mosses, VIII.2001, leg. A.T. sylvestris and Picea obovata with Sphagnum girgensohnii, Vaccin- 1 #, Tyumen, VI.2000, leg. U. 50 A.V. Tanasevitch

DISTRIBUTION. Pan-Holarctic. and loam. 17.IX.2003, leg. A.R.; 1 $, steep right bank of Irtysh River up-stream of Tobolsk Field Research Station, small Diplocentria rectangulata (Emerton, 1915) mosses and litter among Tussilago farfara on clay and loam, 03.X.2003, leg. A.R. 1 #, 4 $$, Nefteyugansk, mixed forests: Abies, Pinus sibirica, 1996 Microcentria pusilla, Esyunin, Ekosistemy Srednego Picea, Betula with Equisetum, Vaccinium spp., Empetrum, mosses, Priob’ya, 1, p. 72. VIII.2001, leg. A.T. DISTRIBUTION. Widespread in Europe, recorded in DISTRIBUTION. Pan-Holarctic. the Crimea and the Caucasus, eastern Kazakhstan; in Siberia known from the Urals eastward to Yenisey River, registered Diplocephalus subrostratus (O. Pickard-Cambridge, from the Altai Mts, South Siberia. This is the first record in 1873) West Siberia.

1996 Diplocephalus subrostratus, Esyunin, Ekosistemy Sred- Dismodicus bifrons (Blackwall, 1841) nego Priob’ya, 1, p. 72. MATERIAL. 1 #, 1 $, Tobolsk Field Research Station, MATERIAL. 1 #, Surgutskiy Refuge, Ob’ River Basin, flood-plain swamp near left bank of Irtysh River: Carex spp., Materikovyi Pasl Channel. Litter between Gramineae and Equi- Comarum palustre, Salix sp., Climacium dendroides, small true setum spp. under bushes and young Populus tremula at small mosses, Lemna sp. etc., 09.VI.2004, leg. A.R. river bank, 05.VIII.2000, leg. A.R. 1 $, Tyumen, VI.2000, leg. U. 1 #, Yuganskiy Reserve, Nyogus’yakh River near Kogontch- DISTRIBUTION. Widespread in Europe, in Siberia ina-2 field research station. Swampy bank of old river channel: known from the Urals eastward to Chukotka; through the Carex hummocks, Gramineae, Filipendula ulmaria , Comarum mountains of South Siberia via the Lake Baikal region east- palustre, Padus, Rosa sp., Salix sp., true mosses etc., 01.IX.2000, leg. A.R.; 2 ##, Vuya-Yany River near Ay-Vuya-Yany River ward to Khabarovsk Prov.; known also from Mongolia. mouth. Mosses and litter in forest at crest line: Pinus sibirica, P. sylvestris, Picea obovata, Abies sibirica, Vaccinium vitis-idaea, V. Dismodicus elevatus (C.L. Koch, 1838) myrtillus, Linnaea borealis, Trientalis europaea, Equisetum sylvat- icum , Pleurozium schreberi , Hylocomium splendens , Dicranum 1996 Dismodicus elevatus, Esyunin, Ekosistemy Srednego sp., Diphasiastrum sp., 21.VIII.2000, leg. A.R.; 1 #, Nyogus’yakh Priob’ya, 1, p. 72. River near Kogontchina-2 field research station. Mosses and litter under Betula, Abies sibirica , Picea obovata , Pinus sibirica with Hylocomium splendens, Linnaea borealis, Oxalis acetosella, DISTRIBUTION. Europe, known also in the Urals and Majanthemum bifolium, Pyrola sp., Trientalis europaea, Equise- West Siberia. tum pratense, Eq . sylvaticum etc., on 1st fluvial terrace above flood-plain, 29.VIII.2000, leg. A.R.; 1 #, Nyogus’yakh River Drapetisca socialis (Sundevall, 1932) Basin near Petchpan’yakh River mouth. Mosses and litter in swampy flood-plain forest, between Betula, Abies sibirica, Picea 1996 Drapetisca socialis, Esyunin, Ekosistemy Srednego obovata , Salix sp., Pinus sibirica etc.: tussocks of Carex spp., Priob’ya, 1, p. 70. Filipendula ulmaria, Gramineae, Comarum palustre, Menyanthes trifoliata , Plagiomnium sp., Aulacomnium sp., Climacium den- droides etc., 12.IX.2000, leg. A.R.; 2 ##, Kol-Kotchen-Yagun MATERIAL. 1 #, Tobolsk Field Research Station, mosses River (confluent of Malyi Yugan River) NE of cordon. Swampy and litter in forest with Abies, Picea, Betula, Carex globularis, flood-plain birch forest: tussocks of Carex spp. & Gramineae, Calamagrostis sp., Equisetum sylvaticum , Pyrola sp., Maianthe- Comarum palustre, Filipendula ulmaria, Ranunculaceae, Sphag- mum bifolium, Linnaea borealis, Oxalis acetosella, Solidago sp., num girgensohnii, Sph. spp., Climacium dendroides, Plagiomnium Lathyrus sp., Lonicera sp., Hylocomium splendens , Pleurozium sp. etc., 23.IX.2001, leg. A.R.; 1 #, 2 $$, right riverside of schreberi, Dicranum polysetum etc., 13.IX.2003, leg. A.R. Bolshoy Yugan River near cordon Kamennyi. Mosses and litter 1 $, Tyumen, VI.2000, leg. U. in forest with Picea obovata, Abies sibirica, Pinus sibirica, Carex DISTRIBUTION. Widespread in Europe, known in the spp. and Gramineae with Sphagnum girgensohnii , Sph. spp., Urals and the Caucasus; in Asia: Middle Asia; West and Polytrichum commune etc., in waterlogged birch forest on Middle Siberia, Kamchatka, Sakhalin, eastern Kazakhstan flood-plain, 21.VIII.2002, leg. A.R. and Altai Mts. Southern part of Khabarovsk Prov.(?), Mari- 1 #, Tyumen, VI.2000, leg. U. time Prov.(?), China (?), Japan (?). This is the first record in DISTRIBUTION. Northeastern Europe (tundra), the West Siberia. Urals; in Siberia from West Siberia to Chukotka, Cisokho- tia, Kamchatka, the Kurile Islands; mountains of South Si- Drepanotylus borealis (Holm, 1945) beria, Sakhalin. Widespread in the Nearctic. MATERIAL. 2 ##, 1 $, Yuganskiy Reserve, Nyogus’yakh Diplostyla concolor (Wider, 1834) River, cordon Bisarkina. Moss and litter on swamp amid flood plain forest near foot of slope: Menyanthes trifoliata, Equisetum MATERIAL. 1 #, Yuganskiy Reserve, Malyi Yugan River, spp., Sphagnum squarrosum (sparse), Sph. ?centrale , Sph. spp., cordon below Lyarykni River mouth, open swamp with tus- Nardosmia frigida, Carex spp., Gramineae, Salix sp., Comarum socks of Carex spp. and Calamagrostis sp. with Comarum palustre, Filipendula ulmaria, ?Tomenthypnum sp., Plagiomnium palustre, Salix sp., Sphagnum squarrosum, Sph. spp., ?Aulacomni- sp. etc., 27.X.1998, leg. A.R.; 2 $$, Malyi Yugan River Basin, Kol- um sp. etc., between sparse young Betula, 17.VIII.2003, leg. A.R. Kotchen-Yagun River, 1 km S of cordon. Mosses and litter on 1 $, Tobolsk Field Research Station, mosses and litter small sedge-mossy swamp near river bank: Carex spp., Sphag- under Betula with Carex globularis, Pleurozium schreberi, Lin- num ?girgensohnii , Sph. ?riparium , Plagiomnium sp. et al., naea borealis, Pyrola sp., Rubus idaeus etc., on gentle slope near 24.IX.1999, leg. A.R.; 1 $, Nyogus’yakh River Basin near crest of Spartakovskaya Mt., 25.IX.2003, leg. A.R.; 1 $, steep Petchpan’yakh River mouth, N shore of great lake. Mosses, right bank of Irtysh River up-stream of Tobolsk Field Research litter, shaking off from grass: Carex spp., Gramineae, Comarum Station, small mosses and litter among Tussilago farfara on clay palustre , Salix sp., ?Aulacomnium sp., Plagiomnium sp. etc., Linyphiid spiders of the West Siberian Plain 51

08.IX.2000, leg. A.R.; 1 $, Ay-Magromsy River Basin, 1 km N of Lake. Lake shore: Carex spp., Gramineae, Sphagnum spp. etc., Medvezhyi Ugol cordon, mosses and litter on flood-plain of 29.VIII.2001, leg. A.R.; 5 $$, near S border of buffer area of rill with Calamagrostis sp., Filipendula ulmaria , Spiraea sp., Yuganskiy Reserve, Koimlor (Krimlor) Lake. Mosses and litter Equisetum sylvaticum , Plagiomnium sp., Sphagnum spp. etc., in tussocks between sparse Betula and Salix sp. near lake shore: (+5C?), 05.X.2002, leg. A.R. Carex spp., Gramineae, Sphagnum squarrosum , Sph . centrale, DISTRIBUTION. Northern Europe; in Siberia known Sph . girgensohnii , Comarum palustre, sparse Equisetum sp. from the Urals eastward to Cisokhotia, the mountains of 02.IX.2001, leg. A.R.; 2 $$, Ay-Magromsy River Basin, Med- South Siberia, the Kurile Islands and Sakhalin. vezhyi Ugol cordon, mosses and litter at rill bank: Carex rhynchophysa, Sphagnum spp., Plagiomnium sp. etc., 16.IX.2002, leg. A.R.; 1 $, Yuganskiy Reserve, Ay-Magromsy River Basin, Drepanotylus holmi (Eskov, 1981) Medvezhyi Ugol cordon, sweeping on Carex rostrata, C. spp., Gramineae, Eriophorum sp. etc., mosses and litter at border of MATERIAL. 3 $$, near Ugut, Ugutka River Basin. Mosses sedge-mossy swamp (including rill source): Carex rostrata, C. and litter at forest with Pinus sylvestris, Betula, Ledum palustre, spp., Sphagnum girgensohnii, Sph. spp., Equisetum spp., Oxycoc- Vaccinium myrtillus , V. vitis-idaeae , Dicranum sp., Pleurozium cus spp., Chamaedaphne calyculata, Comarum palustre, Calama- schreberi , Hylocomium splendens, underwood of Pinus sibirica grostis sp., Menyanthes trifoliata etc., among sparse young etc., 11.X.1998, leg. A.R. birches, 19.IX.2002, leg. A.R.; 1 $, Ay-Magromsy River Basin, 2 $$, Yuganskiy Reserve, Nyogus’yakh River, cordon Bisarki- Medvezhyi Ugol cordon, mosses and litter near rill: Plagiomni- na. Moss and litter on swamp amid flood plain forest near foot um sp., Sphagnum squarrosum, Sph . centrale, Sph . girgensohnii, of slope: Menyanthes trifoliata, Equisetum spp., Sphagnum squar- Sph. warnstorfii, Calamagrostis sp., Carex sp. among sparse Salix rosum (sparse), Sph. ?centrale , Sph. spp., Nardosmia frigida, sp. and birches, (+3C?), 28.IX.2002, leg. A.R.; 3 $$, Malyi Yugan Carex spp., Gramineae, Salix sp., Comarum palustre, Filipendula River, cordon below Lyarykni River mouth, open swamp with ulmaria, ?Tomenthypnum sp., Plagiomnium sp. etc., 27.X.1998, tussocks of Carex spp. and Calamagrostis sp. with Comarum leg. A.R.; 1 $, Nyogus’yakh River, cordon Bisarkina. Moss and palustre, Salix sp., Sphagnum squarrosum, Sph. spp., ?Aulacomni- litter under Betula, Picea, Pinus sibirica on swamp amid flood um sp. etc., between sparse young Betula, 17.VIII.2003, leg. A.R. plain forest near foot of slope, 27.X.1998, leg. A.R.; 1 #, 1 $, Tobolsk Field Research Station, mosses and litter and Yuganskiy Reserve, Vuya-Yany River near Ay-Vuya-Yany River in sweeping on small swamp with Carex spp., Poaceae, Sphag- mouth. Flood-plain depression: Filipendula ulmaria, Carex sp., num girgensohnii , Sph . squarrosum , Sph. ?riparium , Sph. ?balti- Gramineae, Spiraea sp., Ribes nigrum, Comarum palustre, Sphag- cum, Sph. centrale etc., 10.VI.2004, leg. A.R. num squarrosum, Sph. girgensohnii, Climacium dendroides, Aula- DISTRIBUTION. This species has hitherto been known comnium sp., Plagiomnium sp. etc., 24.VIII.2000, leg. A.R.; 1 $, from the middle flow region of Yenisey River eastward to Nyogus’yakh River Basin near Petchpan’yakh River mouth, N Chukotka and Cisokhotia; recorded in Sayan and Mongolia. shore of great lake. Mosses, litter, shaking off from grass: Carex This is the first record in West Siberia. spp., Gramineae, Comarum palustre, Salix sp., ?Aulacomnium sp., Plagiomnium sp. etc., 08.IX.2000, leg. A.R.; 1 #, Nyogus’yakh River Basin near Petchpan’yakh River mouth. Mosses and litter Drepanotylus uncatus (O. Pickard-Cambridge, on large swamp: Carex spp., Comarum palustre, Equisetum sp., 1872) Eriophorum sp., Gramineae, Rumex sp., ?Aulacomnium sp., Plagi- omnium sp., Ptilium crista-castrensis, Sphagnum sp., Chamaeneri- 1996 Drepanotylus uncatus, Esyunin, Ekosistemy Srednego um angustifolium, sparse Betula & Salix sp., spots of dwarf birch Priob’ya, 1, p. 70. on hummocks etc., 11.IX.2000, leg. A.R.; 2 $$, Nyogus’yakh River Basin near Petchpan’yakh River mouth. Mosses and litter MATERIAL. 1 $, Surgutskiy Refuge, Ob’ River Basin, Ma- on large swamp: Carex spp., Comarum palustre, Equisetum sp., terikovyi Pasl Channel, 2 km S of cordon. Mosses and litter on Eriophorum sp., Gramineae, Rumex sp., ?Aulacomnium sp., Plagi- swamp with Sphagnum spp., Carex spp., Eriophorum sp., Ledum, omnium sp., Ptilium crista-castrensis, Sphagnum sp., Chamaeneri- Betula ?rotundifolia, Aulacomnium sp., Hypnum sp., Polytrichum um angustifolium, Betula and Salix sp. etc., 13.IX.2000, leg. A.R.; sp., sparse Pinus sylvestris , Betula sp., Populus tremula etc., 1 $, Nyogus’yakh River Basin near Petchpan’yakh River mouth. 09.VIII.2000, leg. A.R. Mosses and litter on large swamp: Carex spp., Comarum palus- 1 #, Yuganskiy Reserve, Malyi Yugan River Basin, 3–5 km tre, Equisetum sp., Nardosmia frigida, Eriophorum sp., Gramine- SW of cordon at Kol-Kotchen-Yagun River, near lake. Mosses ae, Rumex sp., ?Aulacomnium sp., Plagiomnium sp., Ptilium crista- on swamp near N shore of lake: Sphagnum spp., Carex spp., castrensis, Sphagnum sp., Chamaenerium angust, Sphagnum ?rus- Eriophorum sp., Chamaedaphne calyculata, Andromeda polifolia, sowii, Sph. sp., Salix sp. etc., 15.IX.2000, leg. A.R.; 1 #, 2 $$, Oxycoccus spp., Vaccinium uliginosum et al., 18.IX.1999, leg. Nyogus’yakh River Basin near Petchpan’yakh River mouth. A.R.; 4 ##, 1 $, Nyogus’yakh River Basin near Petchpan’yakh Mosses and litter on large open swamp: Sphagnum ?angustifoli- River mouth. Mosses and litter on large swamp: Carex spp., um , Sph. ?girgensohnii , Sph. ?russowii , Sph. sp., dwarf birch, Comarum palustre , Equisetum sp., Eriophorum sp., Gramineae, Oxycoccus spp., Gramineae, Carex spp., Comarum palustre, Rumex sp., ?Aulacomnium sp., Plagiomnium sp., Ptilium crista- Equisetum sp., ?Aulacomnium sp., Plagiomnium sp., Ptilium crista- castrensis , Sphagnum sp., Chamaenerium angustifolium, sparse castrensis etc., 24.IX.2000, leg. A.R.; 1 $, Bolshoy Yugan River, Betula & Salix sp., spots of dwarf birch on hummocks etc., 6–7 km below Sugmuten’yakh River mouth. Mosses and litter 11.IX.2000, leg. A.R.; 1 #, Nyogus’yakh River Basin near on overgrown swamp and swamped winter road with Pinus Petchpan’yakh River mouth. Mosses and litter on large swamp: sylvestris, Betula, Chamaedaphne, Ledum, Eriophorum sp., Sphag- Carex spp., Comarum palustre , Equisetum sp., Eriophorum sp., num fuscum, Sph. magellanicum, Sph. ?balticum, Sph. spp., Oxy- Gramineae, Rumex sp., ?Aulacomnium sp., Plagiomnium sp., coccus sp., Vaccinium uliginosum , Pleurozium schreberi etc., Ptilium crista-castrensis, Sphagnum sp., Chamaenerium angustifo- 20.VIII.2001, leg. A.R.; 4 $$, Bolshoy Yugan River, 6–7 km lium , Betula and Salix sp. etc., 13.IX.2000, leg. A.R.; 1 $, below Sugmuten’yakh River mouth. Mosses and litter between Nyogus’yakh River Basin near Petchpan’yakh River mouth. sedges and Gramineae on swamped winter road with Carex Mosses and litter on large swamp: Carex spp., Comarum palus- spp., Calamagrostis sp., Sphagnum girgensohnii , Sph. spp. etc., tre, Equisetum sp., Nardosmia frigida, Eriophorum sp., Gramine- 20.VIII.2001, leg. A.R.; 1 #, Bolshoy Yugan River, 6–7 km ae, Rumex sp., ?Aulacomnium sp., Plagiomnium sp., Ptilium crista- below Sugmuten’yakh River mouth. Mosses and litter between castrensis, Sphagnum sp., Chamaenerium angust, Sphagnum ?rus- sedges and Gramineae on swamped winter road with Carex sowii, Sph. sp., Salix sp. etc., 15.IX.2000, leg. A.R.; 3 $$, near S spp., Calamagrostis sp., Sphagnum girgensohnii, Sph. spp. etc., and border of buffer area of Yuganskiy Reserve, Kolynlor Lake. on the plot without Sphagnum spp., 21.VIII.2001, leg. A.R.; 1 $, Mosses and litter under Betula, Pinus sylvestris and Pinus near S border of buffer area of Yuganskiy Reserve, Kolynlor sibirica in swamped forest near W shore of lake and between 52 A.V. Tanasevitch

Carex spp. with Sphagnum girgensohnii at the lake shore, Tobolsk Field Research Station, mosses and litter among sparse 01.IX.2001, leg. A.R.; 1 #, Ay-Magromsy River Basin, Medvezhyi Salix spp., Betula, Pinus sylvestris with tussocks of Carex spp., Ugol cordon, mosses and litter at swamp border: Carex rostra- Poaceae, Lythrum sp., Filipendula ulmaria, Climacium dendroi- ta, Sphagnum girgensohnii, Sph. spp. etc., among sparse young des, isolated spots of Sphagnum squarrosum , Sph. sp. etc., on birches, 11.IX.2002, leg. A.R.; 1 #, Ay-Magromsy River Basin, swamped flood-plain of left bank of Irtysh River, 29.IX.2003, Medvezhyi Ugol cordon, sweeping on Carex rostrata, C. spp., leg. A.R.; 6 ##, 4 $$, among Carex spp. on flood-plain of mosses and litter at swamp border: Carex rostrata, Sphagnum Varpak River, 25.IX.2003, leg. A.R.; 1 #, Tobolsk Field Research girgensohnii, Sph. spp. etc., among sparse young birches, (+7C?), Station, mosses and litter in swampy birch forest with Pinus 15.IX.2002, leg. A.R.; 6 $$, Ay-Magromsy River Basin, Med- sylvestris , Ledum palustre , Vaccinium uliginosum , Carex globu- vezhyi Ugol cordon, mosses and litter at rill bank: Carex laris , Sphagnum girgensohnii , Sph. ?russowii , Sph. spp., Polytri- rhynchophysa, Sphagnum spp., Plagiomnium sp. etc., 16.IX.2002, chum commune, P. strictum, Pleurozium schreberi, ?Aulacomnium leg. A.R.; 2 ##, 1 $, Ay-Magromsy River Basin, Medvezhyi sp., Climacium dendroides etc., 30.IX.2003, leg. A.R. Ugol cordon, mosses and litter at southern border of sedge- 3 ##, 5 $$, Samotlor, bank of Vakh River, Salix bushes, mossy swamp: Carex rostrata, C. spp., Comarum palustre, Equise- litter, Aug. 1999, leg. A.T.; 3 ##, 1 $, dump in a village, Aug. tum spp., Sphagnum girgensohnii , Sph. spp., Plagiomnium sp., 1999, leg. A.T. Aulacomnium sp., Calamagrostis sp., Menyanthes trifoliata etc., 1 #, 2 $$, Tyumen, VI.2000, leg. U. among sparse young birches, 21.IX.2002, leg. A.R.; 1 $, Ay- DISTRIBUTION. All over the Holarctic. Magromsy River Basin, Medvezhyi Ugol cordon, mosses and litter in tussocks of Carex sp. with Sphagnum squarrosum, Sph. Erigone dentipalpis (Wider, 1834) centrale, Sph . girgensohnii, Sph. ?russowii, Plagiomnium sp. etc., and also sweeping on Carex rhynchophysa among swampy birch forest at SW border of the reserve, 21.IX.2002, leg. A.R. MATERIAL. 6 ##, 3 $$, Tobolsk Field Research Station, 1 $, Noyabrsky, Salix bushes along brook, litter, 15.VIII.2000, gentle sandy left bank of Irtysh River with clayish spots: among leg. A.T. Equisetum sp., 15.IX.2003, leg. A.R.; 3 ##, 4 $$, steep right bank DISTRIBUTION. Europe, the Urals, West Siberia. of Irtysh River below Tobolsk Field Research Station, mosses and litter among sparse Tussilago farfara on clay and loam, 04.X.2003, leg. A.R.; 1 #, steep right bank of Irtysh River up- Entelecara erythropus (Westring, 1851) stream of Tobolsk Field Research Station, small mosses and litter among Tussilago farfara on clay and loam, 17.IX.2003, leg. A.R. MATERIAL. 1 $, Samotlor, dump in outskirts, Aug. 1999, DISTRIBUTION. Pan-Holarctic. This is the first record A.T. leg. in West Siberia. DISTRIBUTION. Europe, in Siberia known from the Urals to Yenisey River; from eastern Kazakhstan though the mountains of South Siberia via the Lake Baikal region east- Erigone hypoarctica Eskov, 1989 ward to Khabarovsk Prov. This is the first record in West Siberia. MATERIAL. 4 ##, 3 $$, Yuganskiy Reserve, Malyi Yugan River, near cordon below Maalyakh River mouth, mosses and litter in forest with Pinus sibirica , P . sylvestris , Picea , Betula, Erigone atra Blackwall, 1833 Populus tremula , Abies , Equisetum sylvaticum , Linnaea borealis, Vaccinium vitis-idaea, V. myrtillus, Carex globularis, Pleurozium 1996 Erigone atra, Esyunin, Ekosistemy Srednego Priob’ya, schreberi, Hylocomium splendens, Polytrichum commune, sparse 1, p. 72. spots of Sphagnum girgensohnii and Ledum palustre, 20.VIII.2003, leg. A.R. MATERIAL. 1 $, Yuganskiy Reserve, Vuya-Yany River near DISTRIBUTION. All Siberia from the Urals to Chukot- Ay-Vuya-Yany River mouth. Clay river banks near mouth of ka, Cisokhotia, Sakhalin; mountains of South Siberia: Tuva small left confluent (500 m lower of field research station): and Sayan. Carex spp., Gramineae, Mentha sp., ?Trollius sp. etc., 25.VIII.2000, leg. A.R. Erigonella ignobilis (O. Pickard-Cambridge, 1871) 3 ##, 2 $$, Tobolsk Field Research Station, flood-plain swamp near left bank of Irtysh River: Carex spp., Comarum palustre , Salix sp., Climacium dendroides, small true mosses, 1996 Erigonella ignobilis, Esyunin, Ekosistemy Srednego Lemna sp. etc., 15.IX.2003, leg. A.R.; 1 #, mosses and litter Priob’ya, 1, p. 72. under Betula, Pinus sibirica, Alnus, Abies with Carex globularis, Oxalis acetosella , Linnaea borealis , Delphinium sp., Maianthe- MATERIAL. 15 ## & $$, near Ugut, Ugutka River Basin. mum bifolium , Pyrola sp., Rubus saxatilis, sparse Pleurozium Mosses and litter at forest with Pinus sylvestris, Betula, Ledum schreberi etc., on gentle slope near Varpak River, 22.IX.2003, palustre, Vaccinium myrtillus, V. vitis-idaea, Dicranum sp., Pleu- leg. A.R.; 1 #, 2 $$, flood-plain swamps of left bank of Irtysh rozium schreberi , Hylocomium splendens, underwood of Pinus River with Salix sp., Betula , Carex spp., Comarum palustre, sibirica etc., 11.X.1998, leg. A.R. Climacium dendroides, Aulacomnium palustre, Sphagnum girgen- 3 $$, Surgutskiy Refuge, Ob’ River Basin, Materikovyi Pasl sohnii , Sph. ?russowii, Sph. centrale , Sph . squarrosum etc., Channel. Mosses and litter on bog near glade: tussocks with 27.IX.2003, leg. A.R.; 2 $$, gentle sandy left bank of Irtysh Carex ?globularis , Sphagnum ?girgensohnii , Sph. spp., Linnaea River with clayish spots: among Equisetum sp., 15.IX.2003, leg. borealis , Equisetum sylvaticum , Vaccinium vitis-idaea , Ledum A.R.; 2 ##, steep right bank of Irtysh River up-stream of palustre, 06.VIII.2000, leg. A.R. Tobolsk Field Research Station, small mosses and litter among 3 ##, 5 $$, Yuganskiy Reserve, Nyogus’yakh River, cordon Tussilago farfara on clay and loam, 14.IX.2003, leg. A.R.; 3 ##, Bisarkina. Moss and litter at swamp amid flood-plain forest near 2 $$, steep right bank of Irtysh River up-stream of Tobolsk foot of slope: Menyanthes trifoliata, Equisetum sp., Sphagnum spp., Field Research Station, small mosses and litter among Tussilago Comarum palustre, Filipendula ulmaria, ?Tomenthypnum sp., Pla- farfara on clay and loam, 17.IX.2003, leg. A.R.; 1 #, 5 $$, steep giomnium sp. etc., with sparse Betula, Picea, Abies, Pinus sibirica, right bank of Irtysh River up-stream of Tobolsk Field Research 25.X.1998, leg. A.R.; 5 ##, 2 $$, Nyogus’yakh River, cordon Station, small mosses and litter among Tussilago farfara on clay Bisarkina. Moss and litter on swamp amid flood plain forest near and loam, 03.X.2003, leg. A.R.; 1 #, 6 $$, flood-plain of left foot of slope: Menyanthes trifoliata , Equisetum spp., Sphagnum bank of Irtysh River, swampy shore of Letneye Lake: Carex spp., squarrosum (sparse), Sph. ?centrale, Sph. spp., Nardosmia frigida, Comarum palustre, Scirpus sp., mosses. 01.X.2003, leg. A.R.; 1 $, Carex spp., Gramineae, Salix sp., Comarum palustre, Filipendula Linyphiid spiders of the West Siberian Plain 53 ulmaria, ?Tomenthypnum sp., Plagiomnium sp. etc., 27.X.1998, leg. with Carex spp., Calamagrostis sp., Sphagnum girgensohnii , Sph. A.R.; 20 ## & $$, near Vuya-Yany River mouth. Moss and spp. etc., and on the plot without Sphagnum spp. 21.VIII.2001, litter at border of open swamp with Carex spp., ?Eriophorum sp., leg. A.R.; 7 ##, 4 $$, near S border of buffer area of Yuganskiy Comarum palustre , Equisetum sp., Sphagnum ?girgensohnii , Sph. Reserve, Kolynlor Lake. Lake shore: Carex spp., Gramineae, squarrosum, Majanthemum bifolium, sparse Betula etc., 15.VIII.1998, Sphagnum spp. etc., 29.VIII.2001, leg. A.R.; 2 ##, 5 $$, near S leg. A.R.; 2 ##, 5 $$, Malyi Yugan River, 3 km up-stream off border of buffer area of Yuganskiy Reserve, Kolynlor Lake. Vuya-Yany River mouth. Litter in flood-plane birch forest with Mosses and litter under Betula, Pinus sylvestris and Pinus sibirica Maianthemum, young Picea and Abies, Rosa sp. etc., 14.VIII.1998, in swamped forest near W shore of lake and between Carex spp. leg. A.R.; 4 $$, Nyogus’yakh River Basin, forest road, 2.5 km ENE with Sphagnum girgensohnii at the lake shore, 01.IX.2001, leg. of cordon Bisarkina. Swampy sources of parched rill: Sphagnum A.R.; 4 ##, 11 $$, near S border of buffer area of Yuganskiy spp., Carex spp., graminoids, Equisetum spp. 28.X.1998, leg. A.R.; Reserve, Koimlor (Krimlor) Lake. Mosses and litter in tussocks 14 ##, 1 $, Malyi Yugan River Basin, 3–5 km SW of cordon at between sparse Betula and Salix sp. near lake shore: Carex spp., Kol-Kotchen-Yagun River, near lake. Mosses on swamp near N Gramineae, Sphagnum squarrosum, Sph. centrale, Sph. girgensoh- shore of lake: Sphagnum spp., Carex spp., Eriophorum sp., nii, Comarum palustre, sparse Equisetum sp. 02.IX.2001, leg. A.R.; Chamaedaphne calyculata, Andromeda polifolia, Oxycoccus spp., 2 ##, near S border of buffer area of Yuganskiy Reserve, Vaccinium uliginosum et al., 18.IX.1999, leg. A.R.; 4 ##, 3 $$, Kolynlor Lake. Lake shore: Carex spp., Gramineae, Sphagnum Vuya-Yany River near Ay-Vuya-Yany River mouth. Flood-plain girgensohnii, Sph. squarrosum, Sph. spp. sparse Betula, Salix sp. etc., depression: Filipendula ulmaria, Carex sp., Gramineae, Spiraea sp., 04.IX.2001, leg. A.R.; 4 ##, 2 $$, near S border of buffer area of Ribes nigrum , Comarum palustre , Sphagnum squarrosum , Sph. Yuganskiy Reserve, rill between Kolynlor Lake and Koimlor girgensohnii, Climacium dendroides, Aulacomnium sp., Plagiomni- (Krimlor) Lake. Rill bank near source: tussocks with Carex spp. um sp. etc., 24.VIII.2000, leg. A.R.; 2 ##, Vuya-Yany River near and Gramineae, Comarum palustre, Sphagnum squarrosum, Sph. Ay-Vuya-Yany River mouth. Swamped flood-plain of left river girgensohnii, Sph. spp., Plagiomnium sp. etc., 04.IX.2001, leg. A.R.; bank: Carex spp., Comarum palustre, Filipendula ulmaria, Spiraea ca. 20 ## & $$, near S border of buffer area of Yuganskiy sp., Ribes nigrum, Sphagnum squarrosum, Sph. ?girgensohnii, Plagi- Reserve, Kolynlor Lake. Mosses and litter by lake shore: Carex omnium sp., Aulacomnium sp. etc., 27.VIII.2000, leg. A.R.; 6 ##, spp., Gramineae, Sphagnum girgensohnii , Sph . squarrosum , Sph. 2 $$, Nyogus’yakh River Basin near Petchpan’yakh River mouth, spp. sparse Betula, Salix sp. etc., 05.IX.2001, leg. A.R.; 5 ##, 1 $, N shore of great lake. Mosses, litter, shaking off from grass: Ay-Magromsy River Basin, Medvezhyi Ugol cordon, mosses and Carex spp., Gramineae, Comarum palustre, Salix sp., ?Aulacomni- litter at swamp border: Carex rostrata , Sphagnum girgensohnii, um sp., Plagiomnium sp. etc., 08.IX.2000, leg. A.R.; 5 ##, 4 $$, Sph. spp. etc., among sparse young birches. 11.IX.2002, leg. A.R.; 4 Nyogus’yakh River Basin near Petchpan’yakh River mouth. Mosses $$, Yuganskiy Reserve, Ay-Magromsy River Basin, Medvezhyi and litter on large swamp: Carex spp., Comarum palustre, Equise- Ugol cordon, sweeping on Carex rostrata, C. spp., mosses and tum sp., Eriophorum sp., Gramineae, Rumex sp., ?Aulacomnium sp., litter at swamp border: Carex rostrata , Sphagnum girgensohnii, Plagiomnium sp., Ptilium crista-castrensis, Sphagnum sp., Chamaen- Sph. spp. etc., among sparse young birches, (+7C?), 15.IX.2002, erium angustifolium, sparse Betula & Salix sp., spots of dwarf leg. A.R.; 2 $$, Ay-Magromsy River Basin, Medvezhyi Ugol birch on hummocks etc., 11.IX.2000, leg. A.R.; 8 $$, Nyogus’yakh cordon, sweeping on Carex rostrata, C. spp., Gramineae, Eriopho- River Basin near Petchpan’yakh River mouth. Mosses and litter rum sp. etc., mosses and litter at border of sedge-mossy swamp on large swamp: Carex spp., Comarum palustre , Equisetum sp., (including rill source): Carex rostrata, C. spp., Sphagnum girgen- Eriophorum sp., Gramineae, Rumex sp., ?Aulacomnium sp., Plagi- sohnii, Sph. spp., Equisetum spp., Oxycoccus spp., Chamaedaphne omnium sp., Ptilium crista-castrensis, Sphagnum sp., Chamaeneri- calyculata, Comarum palustre, Calamagrostis sp., Menyanthes tri- um angustifolium, Betula and Salix sp. etc., 13.IX.2000, leg. A.R.; 7 foliata etc., among sparse young birches, 19.IX.2002, leg. A.R.; 4 ##, 3 $$, Nyogus’yakh River Basin near Petchpan’yakh River ##, 2 $$, Ay-Magromsy River Basin, Medvezhyi Ugol cordon, mouth. Mosses and litter on large swamp: Carex spp., Comarum mosses and litter at southern border of sedge-mossy swamp: palustre, Equisetum sp., Nardosmia frigida, Eriophorum sp., Gramine- Carex rostrata, C. spp., Comarum palustre, Equisetum spp., Sphag- ae, Rumex sp., ?Aulacomnium sp., Plagiomnium sp., Ptilium crista- num girgensohnii , Sph. spp., Plagiomnium sp., Aulacomnium sp., castrensis, Sphagnum sp., Chamaenerium angust, Sphagnum ?rus- Calamagrostis sp., Menyanthes trifoliata etc., among sparse young sowii, Sph. sp., Salix sp. etc., 15.IX.2000, leg. A.R.; 4 $$, Nyogus’yakh birches, 21.IX.2002, leg. A.R.; 6 ##, 3 $$, Ay-Magromsy River River Basin near Petchpan’yakh River mouth. Mosses and litter Basin, Medvezhyi Ugol cordon, mosses and litter in tussocks of on large open swamp: Sphagnum ?angustifolium, Sph. ?girgensoh- Carex sp. with Sphagnum squarrosum, Sph. centrale, Sph. girgen- nii, Sph. ?russowii, Sph. sp., dwarf birch, Oxycoccus spp., Gramine- sohnii, Sph. ?russowii, Plagiomnium sp. etc., and also sweeping on ae, Carex spp., Comarum palustre, Equisetum sp., ?Aulacomnium Carex rhynchophysa among swampy birch forest at SW border sp., Plagiomnium sp., Ptilium crista-castrensis etc., 24.IX.2000, leg. of the reserve, 21.IX.2002, leg. A.R.; ca. 20 ## & $$, Ay- A.R.; 5 $$, Vuya-Yanyf River near Ay-Vuya-Yany River mouth. Magromsy River Basin, Medvezhyi Ugol cordon, mosses and Flood-plain lake shore: young Betula and Populus tremula, Carex litter at southern border of sedge-mossy swamp: Carex rostrata, spp., Filipendula ulmaria, Gramineae, Sphagnum girgensohnii, Aul- C. spp., Comarum palustre, Equisetum spp., Sphagnum girgensohnii, acomnium sp., Climacium dendroides , Comarum palustre, Sph. spp., Plagiomnium sp., Aulacomnium sp., Calamagrostis sp., 23.VIII.2000, leg. A.R.; 5 $$, Nyogus’yakh River near Petchpan’yakh Menyanthes trifoliata etc., among sparse young birches, (+7C?), River mouth. Mosses and litter under Abies sibirica, Betula, Pinus 23.IX.2002, leg. A.R.; 5 $$, Ay-Magromsy River Basin, Medvezhyi sibirica , Sorbus sibirica with Hylocomium splendens , Pleurozium Ugol cordon, mosses on sedge-mossy swamp: Carex rostrata, C. schreberi, Gramineae, Equisetum pratense, Eq. sylvaticum, Maian- spp., Sphagnum ?angustifolium, Sph. girgensohnii, Sph. sp., Oxycoc- themum bifolium, Trientalis europaea, Linnaea borealis, Vaccinium cus spp, (+8C?), 26.IX.2002, leg. A.R.; 1 #, Ay-Magromsy River vitis-idaea etc., in flood-plain forest on natural levee, 09.IX.2000, Basin, 1 km N of Medvezhyi Ugol cordon, mosses and litter on leg. A.R.; 3 ##, 4 $$, Bolshoy Yugan River, 6–7 km below flood-plain of rill with Calamagrostis sp., Filipendula ulmaria, Sugmuten’yakh River mouth. Bank of old channel: tussocks with Spiraea sp., Equisetum sylvaticum, Plagiomnium sp., Sphagnum spp. Carex spp., Gramineae, small admixture of Filipendula ulmaria etc., (+5C?), 05.X.2002, leg. A.R. between sparse Salix sp. and Betula, 17.VIII.2001, leg. A.R.; 1 #, 1 #, 2 $$, Tobolsk Field Research Station, mosses and 4 $$, Bolshoy Yugan River, 6–7 km below Sugmuten’yakh River litter and in sweeping on small swamp with Carex spp., mouth. Mosses and litter on overgrown swamp and swamped Poaceae, Sphagnum girgensohnii, Sph. squarrosum, Sph. ?riparium, winter road with Pinus sylvestris, Betula, Chamaedaphne, Ledum, Sph. ?balticum, Sph. centrale etc., 10.VI.2004, leg. A.R. Eriophorum sp., Sphagnum fuscum, Sph. magellanicum, Sph. ?balti- 30 ## & $$, Noyabrsky, Salix bushes along brook, litter, cum, Sph. spp., Oxycoccus sp., Vaccinium uliginosum, Pleurozium 15.VIII.2000, leg. A.T. schreberi etc., 20.VIII.2001, leg. A.R.; 6 ##, 3 $$, Bolshoy Yugan DISTRIBUTION. Widespread in Europe, known in the River, 6–7 km below Sugmuten’yakh River mouth. Mosses and Urals; West, Middle and East Siberia, in the mountains of litter between sedges and Gramineae on swamped winter road South Siberia registered from Sayan. 54 A.V. Tanasevitch

Erigonidium graminicola (Sundevall, 1830) Yuganskiy Reserve, Kolynlor Lake. Lake shore: Carex spp., Gramineae, Sphagnum girgensohnii , Sph . squarrosum , Sph. spp. 1996 Erigonidium graminicola, Esyunin, Ekosistemy Sred- sparse Betula, Salix sp. etc., 04.IX.2001, leg. A.R.; 1 #, Bolshoy nego Priob’ya, 1, p. 72. Yugan River Basin, 6 km E of Kamennyi cordon, Sakson-Tog-Lor Lake. Sphagnum spp. & Carex spp. at lake shore, 16.VIII.2002, leg. A.R.; 4 $$, Ay-Magromsy River Basin, Medvezhyi Ugol MATERIAL. 1 #, 1 $, Tobolsk Field Research Station, cordon, sweeping on Carex rostrata, C. spp., Gramineae, Eriopho- flood-plain of left bank of Irtysh River, under Carex spp., rum sp. etc., mosses and litter at border of sedge-mossy swamp Poaceae, Lythrum, Mentha sp. etc., and on ground among those, (including rill source): Carex rostrata, C. spp., Sphagnum girgen- 19.IX.2003, leg. A.R.; 1 #, steep right bank of Irtysh River up- sohnii, Sph. spp., Equisetum spp., Oxycoccus spp., Chamaedaphne stream of Tobolsk Field Research Station, small mosses and calyculata, Comarum palustre, Calamagrostis sp., Menyanthes tri- litter among Tussilago farfara on clay and loam. 03.X.2003, leg. foliata etc., among sparse young birches, 19.IX.2002, leg. A.R.; 1 $, A.R.; 1 #, Tobolsk Field Research Station, among Carex spp. on Ay-Magromsy River Basin, Medvezhyi Ugol cordon, mosses and flood-plain of Varpak River, 25.IX.2003, leg. A.R.; 1 $, 11 km S litter at southern border of sedge-mossy swamp: Carex rostrata, of Gornoslinkino, clayish right bank of Irtysh River (narrow C. spp., Comarum palustre, Equisetum spp., Sphagnum girgensohnii, fold at rill mouth) up-stream of Tobolsk Field Research Sph. spp., Plagiomnium sp., Aulacomnium sp., Calamagrostis sp., Station, in leaf litter and sweeping under Salix sp. with small Menyanthes trifoliata etc., among sparse young birches, 21.IX.2002, true mosses, Marchantia sp., Equisetum sp., Carex sp., Calama- leg. A.R.; 2 ##, 2 $$, Malyi Yugan River, cordon below grostis sp. etc., 11.VI.2004, leg. A.R. Lyarykni River mouth, open swamp with tussocks of Carex spp. DISTRIBUTION. Throughout the Palaearctic. and Calamagrostis sp. with Comarum palustre, Salix sp., Sphag- num squarrosum, Sph. spp., ?Aulacomnium sp. etc., between sparse Floronia bucculenta (Clerck, 1757) young Betula, 17.VIII.2003, leg. A.R.; 1 $, Malyi Yugan River, cordon below Lyarykni River mouth, open swamp with tussocks MATERIAL. 1 $, Tomsk, Abies forest, in moss and litter, of Carex spp. and Calamagrostis sp. with Comarum palustre, Salix 15–16.VIII.1998, leg. A.T. sp., Sphagnum squarrosum , Sph. spp., ?Aulacomnium sp. etc., DISTRIBUTION. Widespread in Europe, the Caucasus between sparse young Betula, 22.VIII.2003, leg. A.R.; 1 $, Malyi Yugan River, near cordon below Maalyakh River mouth, mosses and the Urals; in Siberia this species has been known from and litter in forest with Pinus sibirica, P. sylvestris, Picea, Betula, the middle flow region of Yenisey River; through the moun- Populus tremula , Abies , Equisetum sylvaticum , Linnaea borealis, tains of South Siberia eastward to Khabarovsk Prov., Mari- Vaccinium vitis-idaea , V . myrtillus , Carex globularis , Pleurozium time Prov.; registered from Sakhalin and China. This is the schreberi , Hylocomium splendens , Polytrichum commune, sparse first record in West Siberia. spots of Sphagnum girgensohnii and Ledum palustre, 20.VIII.2003, leg. A.R. Glyphesis cottonae (La Touche, 1945) 2 ##, 1 $, Tobolsk Field Research Station, flood-plain swamp near left bank of Irtysh River: Carex spp., Comarum palustre , Salix sp., Climacium dendroides, small true mosses, MATERIAL. 1 #, Yuganskiy Reserve, Ay-Magromsy River Lemna sp. etc., 15.IX.2003, leg. A.R.; 6 ##, 3 $$, mosses and Basin, Medvezhyi Ugol cordon, mosses on sedge-mossy swamp: litter and in sweeping on small swamp with Carex spp., Poaceae, Carex rostrata, C. spp., Sphagnum ?angustifolium, Sph. girgensoh- Sphagnum girgensohnii , Sph . squarrosum , Sph. ?riparium , Sph. nii, Sph. sp., Oxycoccus spp, (+8C?), 26.IX.2002, leg. A.R. ?balticum , Sph . centrale etc., 20.IX.2003, leg. A.R.; 1 #, small DISTRIBUTION. Europe, known also in the Urals. In swamp with Carex sp. and Salix sp. amid birch forest on high Siberia this species has hitherto been recorded in the middle flood-plain of left bank of Irtysh River, 30.IX.2003, leg. A.R.; 2 flow region of Yenisey River. Japan (?). This is the first ##, 5 $$, mosses and litter among Carex spp. with Plagiomnium record in West Siberia. sp. etc., on swampy forest road. 13.IX.2003, leg. A.R.; 2 ##, 3 $$, mosses and litter and in sweeping on small swamp with Carex spp., Poaceae, Sphagnum girgensohnii, Sph . squarrosum, Sph. ?ri- Gnathonarium dentatum (Wider, 1834) parium, Sph. ?balticum, Sph. centrale etc., 21.IX.2003, leg. A.R.; 1 #, 1 $, flood-plain of left bank of Irtysh River, swampy shore of 1996 Gnathonarium dentatum, Esyunin, Ekosistemy Srednego Letneye Lake: Carex spp., Comarum palustre, Scirpus sp., mosses. Priob’ya, 1, p. 72. 01.X.2003, leg. A.R.; 2 $$, plant debris and leaf litter at margin of inundated flood-plain of Varpak River: Carex sp., Poaceae, MATERIAL. 1 $, Yuganskiy Reserve, Nyogus’yakh River Lythrum sp., Salix sp. on gentle slope, aspen trees on steep slope, Basin near Petchpan’yakh River mouth. Mosses and litter on depression in the ground with aspen leaf drift, 07.VI.2004, leg. large swamp: Carex spp., Comarum palustre, Equisetum sp., Erio- A.R.; 6 $$, flood-plain swamp near left bank of Irtysh River: phorum sp., Gramineae, Rumex sp., ?Aulacomnium sp., Plagiomni- Carex spp., Comarum palustre , Salix sp., Climacium dendroides, um sp., Ptilium crista-castrensis , Sphagnum sp., Chamaenerium small true mosses, Lemna sp. etc., 09.VI.2004, leg. A.R.; 2 $$, angustifolium, Betula and Salix sp. etc., 13.IX.2000, leg. A.R.; 1 #, mosses and litter and in sweeping on small swamp with Carex 2 $$, Nyogus’yakh River Basin near Petchpan’yakh River mouth. spp., Poaceae, Sphagnum girgensohnii, Sph . squarrosum, Sph. ?ri- Mosses and litter on large swamp: Carex spp., Comarum palustre, parium, Sph. ?balticum, Sph. centrale etc., 10.VI.2004, leg. A.R. Equisetum sp., Nardosmia frigida , Eriophorum sp., Gramineae, DISTRIBUTION. Widespread in Europe, known from Rumex sp., ?Aulacomnium sp., Plagiomnium sp., Ptilium crista- the Caucasus, Middle Asia, Iran. In Siberia it occurs in West castrensis, Sphagnum sp., Chamaenerium angust, Sphagnum ?rus- and Middle Siberia, Kamchatka, the Kurile Islands; the moun- sowii, Sph. sp., Salix sp. etc., 15.IX.2000, leg. A.R.; 1 #, near S tains of South Siberia, the southern part of Khabarovsk border of buffer area of Yuganskiy Reserve, Kolynlor Lake. Lake Prov., Maritime Prov., Sakhalin; Mongolia, China, Japan. shore: Carex spp., Gramineae, Sphagnum spp. etc., 29.VIII.2001, leg. A.R.; 1 #, near S border of buffer area of Yuganskiy Reserve, Kolynlor Lake. Mosses and litter under Betula, Pinus sylvestris Gonatium rubellum (Blackwall, 1841) and Pinus sibirica in swamped forest near W shore of lake and between Carex spp. with Sphagnum girgensohnii at the lake 1996 Gonatium rubellum, Esyunin, Ekosistemy Srednego shore, 01.IX.2001, leg. A.R.; 2 $$, near S border of buffer area of Priob’ya, 1, p. 72. Yuganskiy Reserve, Koimlor (Krimlor) Lake. Mosses between Equisetum fluviatile and under Salix sp. on marshy lake shore, MATERIAL. 1 #, 1 $, Yuganskiy Reserve, Nyogus’yakh 02.IX.2001, leg. A.R.; 2 ##, 1 $, near S border of buffer area of River, cordon Bisarkina. Mosses and litter in flood-plane forest Linyphiid spiders of the West Siberian Plain 55 and at natural levee with Abies , Picea , Pinus sibirica , Betula, plain of left bank of Irtysh River, swampy shore of Letneye Oxalis, Equisetum sylvaticum, Eq. pratense, Maianthemum, Trien- Lake: Carex spp., Comarum palustre, Scirpus sp., mosses. 01.X.2003, talis, Linnaea, Hylocomium splendens, Pleurozium schreberi, place- leg. A.R.; 1 #, 3 $$, flood-plain of left bank of Irtysh River, ly Sphagnum sp. (girgensohnii or russowii) etc., 24.X.1998, leg. swampy side of Letneye Lake: Carex spp., Comarum palustre, A.R.; 1 $, Nyogus’yakh River, cordon Bisarkina. Parching rill near Calamagrostis sp., small true mosses, 03.VI.2004, leg. A.R.; 1 #, cordon: mosses and litter in rill-bed and by banks (Carex spp., 4 $$, flood-plain swamp near left bank of Irtysh River: Carex Equisetum sylvaticum , Sphagnum ?riparium , Sph. ?girgensohnii, spp., Comarum palustre, Salix sp., Climacium dendroides, small Polytrichum commune, Filipendula ulmaria, Gramineae, Veratrum, true mosses, Lemna sp. etc., 09.VI.2004, leg. A.R.; 1 #, 4 $$, Linnaea, Maianthemum, Trientalis, Tomenthypnum sp., Plagiomni- mosses and litter and in sweeping on small swamp with Carex um sp. etc.), 31.X.1998, leg. A.R.; 1 #, 3 $$, right confluent of spp., Poaceae, Sphagnum girgensohnii , Sph . squarrosum , Sph. Bolshoy Yugan River, 3 km SW of cordon Kamennyi. Steep ?riparium, Sph. ?balticum, Sph. centrale etc., 10.VI.2004, leg. A.R.; loamy river bank: Carex spp., Gramineae, sparse Filipendula 1 #, 5 $$, 9 km S of Gornoslinkino, mosses and litter among ulmaria, Vicia sp., Veronica ?longifolia etc., 21.VIII.1999, leg. A.R.; sparse Salix spp., Betula, Pinus sylvestris with tussocks of Carex 2 $$, Bolshoy Yugan River, 6–7 km below Sugmuten’yakh River spp., Poaceae, Lythrum sp., Filipendula ulmaria, Climacium den- mouth. Bank of old channel: tussocks with Carex spp., Gramine- droides, isolated spots of Sphagnum squarrosum, Sph. sp. etc., on ae, small admixture of Filipendula ulmaria between sparse Salix swamped flood-plain of left bank of Irtysh River, 29.IX.2003, sp. and Betula, 17.VIII.2001, leg. A.R. leg. A.R. 4 ##, 6 $$, Luginetsky, Abies, Picea & Betula forest, in DISTRIBUTION. Widespread in Europe, registered from grass, 26.VIII.1998, leg. A.T.; 2 ##, swampy spruce (Picea) the Caucasus and Middle Asia; known from the Urals and forest, in moss, 25.VIII.1998, leg. A.T.; 2 ##, Picea, Abies & West Siberia. China (?). This is the first record in West Betula forest, in moss, 26.VIII.1998, leg. A.T. Siberia. DISTRIBUTION. Europe, the Urals, West and Middle Siberia, in the mountains of South Siberia known in Altai, Tuva and Sayan; recorded also in Maritime Prov. Gongylidium rufipes (Linnaeus, 1758)

MATERIAL. 1 #, Tobolsk Field Research Station, in leaf Gonatium rubens (Blackwall, 1833) litter under Salix sp. at border of open flood-plain depression of left bank of Irtysh River, 19.IX.2003, leg. A.R. 1996 Gonatium rubens, Esyunin, Ekosistemy Srednego DISTRIBUTION. Europe, Caucasus, Turkey, Middle Priob’ya, 1, p. 72. Asia; In Siberia known from the Urals eastward to Yenisey River; from eastern Kazakhstan through the mountains of MATERIAL. 1 $, Yuganskiy Reserve, near Vuya-Yany River mouth. Moss and litter at hummocks at bank of old channel South Siberia eastward to Sayan. Registered also in Mari- with Carex spp., Comarum palustre, Filipendula ulmaria, Gramine- time Prov. This is the first record in West Siberia. ae, Plagiomnium sp. etc., 12.VIII.1998, leg. A.R.; 1 $, Bolshoy Yugan River, near cordon Kamennyi. Shore of small flood- Halorates distinctus (Simon, 1884) plain lake: Carex spp., Gramineae, Comarum palustre, Filipen- dula ulmaria, Salix sp., Ribes sp., Rosa sp. etc., 19.VIII.1999, leg. MATERIAL. 1 $, Yuganskiy Reserve, Kol-Kotchen-Yagun A.R.; 1 $, Nyogus’yakh River near Kogontchina-2 field research station. Mosses and litter on swamp with Pinus sylvestris, River (confluent of Malyi Yugan River) NE of cordon. River Betula, Ledum palustre , Andromeda polifolia , Chamaedaphne bank with Carex spp., Gramineae, Filipendula ulmaria, Urtica calyculata , Vaccinium uliginosum , Eriophorum sp., Oxycoccus dioica, Spiraea sp. etc., 23.IX.2001, leg. A.R. palustris, Sphagnum fuscum, Sph. magellanicum, Sph. ?angustifoli- 1 #, Tyumen, VI.2000, leg. U. um, Sph. spp., Rubus chamaemorus etc., 31.VIII.2000, leg. A.R.; 1 DISTRIBUTION. Northern Europe, in Siberia known $, Malyi Yugan River, near cordon below Maalyakh River from the Urals eastward to East Siberia (excluding Chukot- mouth, on ground and in sweeping at river bank: sand, clay, ka); in the mountains of South Siberia known from Altai Carex spp., Poaceae, Equisetum sp., Vicia sp., Veronica longifolia, Mts, Tuva and Sayan. Registered also in Mongolia. This is etc., 19.VIII.2003, leg. A.R. the first record in West Siberia. 1 $, Samotlor, bank of Vakh River, Salix bushes, litter, Aug. 1999, leg. A.T. 2 $$, Noyabrsky, dry Pinus forest, Ledum, Vaccinium vitis- Helophora insignis (Blackwall, 1841) idea , V . uliginosum , Empetrum, in Cladina pads, 10.VIII.2000, leg. A.T.; 2 $$, dry Pinus forest, Ledum, Vaccinium vitis-idea, V. 1996 Helophora insignis, Esyunin, Ekosistemy Srednego uliginosum , Empetrum, moss & lichen (Cladina & Cetraria), Priob’ya, 1, p. 70. 12.VIII.2000, leg. A.T. DISTRIBUTION. Widespread in Europe, registered from MATERIAL. 1 #, Yuganskiy Reserve, Bolshoy Yugan River, Caucasus and Middle Asia; in Siberia distributed from the near cordon Kamennyi. River bank upper of cordon: sand, Urals eastward to Chukotka, Cisokhotia and Sakhalin; from loam, Carex spp., Gramineae, Vicia sp., Asteraceae, Veronica eastern Kazakhstan through the mountains of South Siberia ?longifolia et al., (on soil and grass), 24.VIII.1999, leg. A.R.; 1 #, via the Lake Baikal region eastward to Khabarovsk Prov. Malyi Yugan River Basin, 3–5 km SW of cordon at Kol- and Maritime Prov.; recorded also in Mongolia and Japan. Kotchen-Yagun River, near lake. Moss and litter under Pinus sibirica , P . sylvestris, young Abies with Hylocomium splendens, Pleurozium schreberi, Dicranum sp., Vaccinium myrtillus, V. vitis- Gongylidiellum murcidum Simon, 1884 idaea, Linnaea borealis, sparse Ledum on low knoll, 09.IX.1999, leg. A.R.; 1 $, Vuya-Yany River near Ay-Vuya-Yany River MATERIAL. 1 #, 2 $$, Tobolsk Field Research Station, mouth. Flood-plain depression: Filipendula ulmaria, Carex sp., flood-plain swamp near left bank of Irtysh River: Carex spp., Gramineae, Spiraea sp., Ribes nigrum, Comarum palustre, Sphag- Comarum palustre, Salix sp., Climacium dendroides, small true num squarrosum, Sph. girgensohnii, Climacium dendroides, Aula- mosses, Lemna sp. etc., 15.IX.2003, leg. A.R.; 3 $$, gentle sandy comnium sp., Plagiomnium sp. etc., 24.VIII.2000, leg. A.R.; 1 #, left bank of Irtysh River with clayish spots: among Equisetum Nyogus’yakh River near Kogontchina-2 field research station. sp. 15.IX.2003, leg. A.R.; 1 $, in moss (Climacium dendroides) Mosses and litter under Pinus sibirica, Picea obovata, Populus and leaf litter under Salix sp. at lake shore on open flood-plain tremula with Linnaea borealis, Vaccinium vitis-idaea, Maianthe- of left bank of Irtysh River, 19.IX.2003, leg. A.R.; 1 #, flood- mum bifolium, Trientalis europaea, Hylocomium splendens, Pleu- 56 A.V. Tanasevitch rozium schreberi , Equisetum sylvaticum , Eq . pratense etc., Ay-Vuya-Yany River mouth. Swamped flood-plain of left river 02.IX.2000, leg. A.R.; 1 $, Ay-Magromsy River Basin, Medvezhyi bank: Carex spp., Comarum palustre, Filipendula ulmaria, Spi- Ugol cordon, mosses and litter at rill bank and on flood-plain raea sp., Ribes nigrum, Sphagnum squarrosum, Sph. ?girgensohnii, of rill: Calamagrostis sp., Ribes spp., Rosa sp., Filipendula ulmaria, Plagiomnium sp., Aulacomnium sp. etc., 27.VIII.2000, leg. A.R. Matteuccia struthiopteris, Equisetum sylvaticum, Sphagnum squar- 1 $, Luginetsky, Picea , Abies & Betula forest, in moss, rosum, Sph. girgensohnii, Sph. spp., Plagiomnium sp. etc., 20.IX.2002, 26.VIII.1998, leg. A.T.; 3 ##, 5 $$, Abies, Picea, Betula forest, in leg. A.R.; 1 #, 2 $$, Ay-Magromsy River Basin, Medvezhyi Ugol moss, 21–28.VIII.1998, leg. A.T. cordon, mosses and litter on flood-plain of rill: Filipendula 1 #, 5 $$, Noyabrsky, dry Pinus forest, Ledum, Vaccinium ulmaria , Ribes spp., Comarum palustre , Equisetum sylvaticum, vitis-idea, V. uliginosum, Empetrum, moss & lichen (Cladina & Plagiomnium sp., Carex sp., Calamagrostis sp., Climacium den- Cetraria), 12.VIII.2000, leg. A.T.; 2 $$, Pinus forest, in Cladina droides, (+4C?), 29.IX.2002, leg. A.R.; 1 #, 2 $$, Malyi Yugan pads, 10.VIII.2000, leg. A.T. River, near cordon below Maalyakh River mouth, on ground 1 $, Tyumen, VI.2000, leg. U. and in sweeping at river bank: sand, clay, Carex spp., Poaceae, DISTRIBUTION. Northern Europe, the Urals; all over Equisetum sp., Vicia sp., Veronica longifolia, etc., 19.VIII.2003, Siberia from Yamal Peninsula to Chukotka, Cisokhotia, Kam- leg. A.R. chatka, the Commander and Kurile islands; through the moun- 2 ##, Tobolsk Field Research Station, in litter under tains of South Siberia via the Lake Baikal region eastward to Pinus sibirica , Picea , Betula , Abies , Tilia , Populus tremula with the southern part of Khabarovsk Prov.; Mongolia, Japan. In Lonicera sp., Carex globularis , Oxalis acetosella , Pyrola sp., Delphinium sp., Lathyrus sp., Equisetum sylvaticum etc., on slope, the Nearctic, it occurs from Alaska to Newfoundland. 20.IX.2003, leg. A.R.; 1 $, mosses and litter among sparse Salix spp., Betula, Pinus sylvestris with tussocks of Carex spp., Poaceae, Hilaira minuta Eskov, 1979 Lythrum sp., Filipendula ulmaria, Climacium dendroides, isolated spots of Sphagnum squarrosum, Sph. sp. etc., on swamped flood- MATERIAL. 1 $, Tobolsk Field Research Station, mosses plain of left bank of Irtysh River, 29.IX.2003, leg. A.R.; 1 #, in and litter and in sweeping on small swamp with Carex spp., litter and mosses under Salix sp. with Poaceae, Carex spp., Poaceae, Sphagnum girgensohnii, Sph. squarrosum, Sph. ?riparium, Filipendula ulmaria, Gallium sp., Climacium dendroides etc., at Sph. ?balticum, Sph. centrale etc., 10.VI.2004, leg. A.R. border of flood-plain of Varpak River, 23.IX.2003, leg. A.R. 1 DISTRIBUTION. This species has hitherto been known #, steep right bank of Irtysh River up-stream of Tobolsk Field in Siberia from Yenisey River in the West to Chukotka and Research Station, small mosses and litter among Tussilago Cisokhotia in the East, in the mountains of South Siberia, farfara on clay and loam. 03.X.2003, leg. A.R. 40 ## & $$, Tomsk, Abies forest, in grass, 15–16.VIII.1998, the southern part of Khabarovsk Prov., and Mongolia. This leg. A.T. is the first record in West Siberia. 1 #, Luginetsky, Abies, Picea, Betula forest, in moss, VIII.1998, leg. A.T.; 2 ##, Picea, Populus & Betula forest, in litter, 22– Hilaira pervicax Hull, 1908 28.VIII.1998, leg. A.T.; 5 ##, 8 $$, Abies, Picea & Betula forest, in grass, 26.VIII.1998, leg. A.T. MATERIAL. 4 ##, 7 $$, Yuganskiy Reserve, Vuya-Yany 1 $, Samotlor, Populus forest, in moss, Aug. 1999, leg. A.T.; River near Ay-Vuya-Yany River mouth. Flood-plain depres- 1 $, Populus & Pinus forest, in moss, Aug. 1999, A.T. leg.; 1 $, sion: Filipendula ulmaria , Carex sp., Gramineae, Spiraea sp., Betula forest, glade, in grass, Aug. 1999, leg. A.T. Ribes nigrum , Comarum palustre , Sphagnum squarrosum , Sph. 2 ##, Noyabrsky, Picea wood, moss & lichen, 16.VIII.2000, girgensohnii, Climacium dendroides, Aulacomnium sp., Plagiomni- leg. A.T. um sp. etc., 24.VIII.2000, leg. A.R. DISTRIBUTION. Throughout the Holarctic. DISTRIBUTION. Northern Europe, West, Middle and East Siberia. Hilaira herniosa (Thorell, 1875) Hilaira sp. 1996 Hilaira herniosa, Esyunin, Ekosistemy Srednego Priob’ya, 1, p. 70. MATERIAL. 1 $, environs of Noyabrsky, Salix bushes along brook, litter, 15.VIII.2000, leg. A.T. MATERIAL. 2 ##, 3 $$, Yuganskiy Reserve, near Vuya- NOTE. This female seems to represent an undescribed Yany River mouth. Mosses and litter in flood-plane forest with species. A male has been found in the Yenisey River basin. Pinus sibirica , Abies , Picea , Betula, Rosa , Vaccinium vitis-idaea, Maianthemum, Trientalis, Pleurozium schreberi, Hylocomium splen- dens, Equisetum sylvaticum, spots of Sphagnum ?girgensohnii and Hypselistes jacksoni (O. Pickard-Cambridge, 1902) Sph. ?russowii etc., 09.VIII.1998, leg. A.R.; 2 $$, Vuya-Yany River near Ay-Vuya-Yany River mouth. Flood-plain depression: 1996 Hypselistes jacksoni, Esyunin, Ekosistemy Srednego Filipendula ulmaria , Carex sp., Gramineae, Spiraea sp., Ribes Priob’ya, 1, p. 72. nigrum, Comarum palustre, Sphagnum squarrosum, Sph . girgen- sohnii, Climacium dendroides, Aulacomnium sp., Plagiomnium sp. MATERIAL. 1 #, Surgutskiy Refuge, Ob’ River Basin, etc., 24.VIII.2000, leg. A.R.; 1 #, Nyogus’yakh River near Materikovyi Pasl Channel. Mosses and litter on bog near glade: Kogontchina-2 field research station. Mosses and peat under tussocks with Carex ?globularis , Sphagnum ?girgensohnii , Sph. Carex ?globularis near small forest swamp on island in the spp., Linnaea borealis , Equisetum sylvaticum , Vaccinium vitis- middle of large high moor, 02.IX.2000, leg. A.R.; 2 $$, Ay- idaea, Ledum palustre, 06.VIII.2000, leg. A.R. Magromsy River Basin, Medvezhyi Ugol cordon, mosses and 1 #, Yuganskiy Reserve, Nyogus’yakh River Basin, forest litter at rill bank and on flood-plain of rill: Calamagrostis sp., road, 2.5 km ENE of cordon Bisarkina. Swampy sources of Ribes spp., Rosa sp., Filipendula ulmaria, Matteuccia struthiopteris, parched rill: Sphagnum spp., Carex spp., graminoids, Equisetum Equisetum sylvaticum , Sphagnum squarrosum , Sph . girgensohnii, spp., 28.X.1998, leg. A.R.; 1 $, Nyogus’yakh River Basin near Sph. spp., Plagiomnium sp. etc., 20.IX.2002, leg. A.R.; 3 ##, 5 $$, Petchpan’yakh River mouth. Mosses and litter on large swamp: Vuya-Yany River near Ay-Vuya-Yany River mouth. Flood-plain Carex spp., Comarum palustre , Equisetum sp., Eriophorum sp., depression: Filipendula ulmaria, Carex sp., Gramineae, Spiraea sp., Gramineae, Rumex sp., ?Aulacomnium sp., Plagiomnium sp., Ribes nigrum , Comarum palustre , Sphagnum squarrosum , Sph. Ptilium crista-castrensis, Sphagnum sp., Chamaenerium angustifo- girgensohnii, Climacium dendroides, Aulacomnium sp., Plagiomni- lium , Betula and Salix sp. etc., 13.IX.2000, leg. A.R.; 1 #, um sp. etc., 24.VIII.2000, leg. A.R.; 1 #, Vuya-Yany River near Nyogus’yakh River near Kogontchina-2 field research station. Linyphiid spiders of the West Siberian Plain 57

In geophilous and epigenous fungi. 29.VIII.2000, leg. A.R.; 2 $$, lanicum, Sph. ?angustifolium, Sph. spp., Rubus chamaemorus etc., Vuya-Yany River Basin near Ay-Vuya-Yany River mouth (2 km 31.VIII.2000, leg. A.R. E of cordon). Mosses and litter under Picea obovata , Pinus DISTRIBUTION. Europe, the Crimea, the Urals. In Asia, sibirica, P. sylvestris, Betula on flood-plain of rill with Pleuro- this species has only been registered from eastern Kazakh- zium schreberi , Hylocomium splendens , Sphagnum girgensohnii, stan. This is the first record in Siberia. Polytrichum commune, Equisetum sylvaticum, Carex ?globularis, Linnaea borealis , Vaccinium vitis-idaea , Oxalis acetosella etc., 21.VIII.2000, leg. A.R.; 1 #, Ay-Magromsy River Basin, Med- Incestophantes kochiellus (Strand, 1900) vezhyi Ugol cordon, sweeping on Carex rostrata, C. spp., mosses and litter at swamp border: Carex rostrata, Sphagnum girgen- 1996 Lepthyphantes kochiellus, Esyunin, Ekosistemy Sred- sohnii , Sph. spp. etc., among sparse young birches, (+7C?), nego Priob’ya, 1, p. 70. 15.IX.2002, leg. A.R.; 1 $, Ay-Magromsy River Basin, Medvezhyi Ugol cordon, mosses and litter at southern border of sedge- DISTRIBUTION. Northern Europe, the Urals, West, mossy swamp: Carex rostrata, C. spp., Comarum palustre, Equise- Middle and East Siberia, Cisokhotia and Chukotka. Baikal tum spp., Sphagnum girgensohnii , Sph. spp., Plagiomnium sp., (?), Sakhalin (?). Aulacomnium sp., Calamagrostis sp., Menyanthes trifoliata etc., among sparse young birches, 21.IX.2002, leg. A.R.; 2 ##, 1 $, Ay-Magromsy River Basin, 1 km N of Medvezhyi Ugol cordon, Kaestneria dorsalis (Wider, 1834) mosses and litter on flood-plain of rill with Calamagrostis sp., Filipendula ulmaria, Spiraea sp., Equisetum sylvaticum, Plagiom- 1996 Kaestneria dorsalis, Esyunin, Ekosistemy Srednego nium sp., Sphagnum spp. etc., (+5C?), 05.X.2002, leg. A.R. Priob’ya, 1, p. 70. 1 $, Tobolsk Field Research Station, mosses and litter and in sweeping on small swamp with Carex spp., Poaceae, Sphag- MATERIAL. 2 $$, Yuganskiy Reserve, Bolshoy Yugan Riv- num girgensohnii , Sph . squarrosum , Sph. ?riparium , Sph. ?balti- er, near cordon Kamennyi. Shore of small flood-plain lake: cum, Sph. centrale etc., 21.IX.2003, leg. A.R. Carex spp., Gramineae, Comarum palustre, Filipendula ulmaria, 2 ##, 7 $$, Tomsk, Abies forest, in grass, 15–16.VIII.1998, Salix sp., Ribes sp., Rosa sp. etc., 19.VIII.1999, leg. A.R.; 1 $, Malyi leg. A.T.; 3 ##, 4 $$, in moss and litter, 15–16.VIII.1998, leg. A.T. Yugan River Basin, Kol-Kotchen-Yagun River, 3–4 km S of 1 #, 2 $$, Samotlor, Betula forest, glade, in grass, Aug. cordon. Moss and litter at river bank: Padus, Salix sp., Spiraea 1999, leg. A.T. spp., Filipendula ulmaria, Ribes nigrum, Galium sp., Carex spp., 2 $$, Luginetsky, Abies & Picea forest, log, under bark, 22– Gramineae, Equisetum spp., ?Aulacomnium sp., Plagiomnium sp., 28.VIII.1998, leg. A.T.; 7 ##, 9 $$, Abies, Picea & Betula forest, Climacium dendroides et al., 13.IX.1999, leg. A.R. in grass, 26.VIII.1998, leg. A.T.; 1 $, Picea, Abies & Betula forest, 1 $, 10–11 km S of Gornoslinkino, steep right bank of in moss, 26.VIII.1998, leg. A.T. Irtysh River up-stream of Tobolsk Field Research Station, small 2 ##, Noyabrsky, dry Pinus forest, Ledum, Vaccinium vitis- mosses and litter among Tussilago farfara on clay and loam, idea , V . uliginosum , Empetrum, moss & lichen (Cladina & 03.X.2003, leg. A.R.; 1 $, Tobolsk Field Research Station, mosses Cetraria), 12.VIII.2000, leg. A.T. and litter in swampy birch forest with Pinus sylvestris, Ledum 1 #, Tyumen, VI.2000, leg. U. palustre, Vaccinium uliginosum, Carex globularis, Sphagnum gir- DISTRIBUTION. Northern Europe and the Caucasus, gensohnii , Sph. ?russowii , Sph. spp., Polytrichum commune , P. all Siberia from the Urals to Chukotka, Cisokhotia, Kam- strictum , Pleurozium schreberi, ?Aulacomnium sp., Climacium chatka, Wrangel Island; from eastern Kazakhstan via the dendroides etc., 30.IX.2003, leg. A.R. mountains of South Siberia eastward to Khabarovsk Prov., 1 $, Tomsk Distr., Luginetsky, Abies, Picea, Betula forest, in moss, Aug. 1998, leg. A.T. Maritime Prov.; Mongolia, China. In the Nearctic, recorded DISTRIBUTION. Widespread in Europe, in Siberia from in Alaska and Saskatchewan. the Urals eastward to Yenisey River; known also from the Lake Baikal region. Improphantes complicatus (Emerton, 1882) Kaestneria pullata (O. Pickard-Cambridge, 1863) 1996 Lepthyphantes complicatus, Esyunin, Ekosistemy Sred- nego Priob’ya, 1, p. 70. 1996 Kaestneria pullata, Esyunin, Ekosistemy Srednego Priob’ya, 1, p. 70. MATERIAL. 1 #, Yuganskiy Reserve, Nyogus’yakh River Basin, forest road, 3 km ENE of cordon Bisarkina. Moss and litter in forest with Picea , Pinus sibirica , P . sylvestris , Betula, MATERIAL. 1 $, Surgutskiy Refuge, Ob’ River Basin, right Equisetum pratense, Eq . sylvaticum, Pleurozium schreberi, Hylo- bank of Materikovyi Pasl Channel. Lake shore: Carex spp., comium splendens, Vaccinium myrtillus, V. vitis-idaea, Sphagnum Comarum palustre, Lamiaceae, Climacium, Plagiomnium sp. etc., russowii (placely), 28.X.1998, leg. A.R. 10.VIII.2000, leg. A.R. 1 $, Luginetsky, swampy spruce (Picea) forest, in moss, 1 #, Yuganskiy Reserve, Nyogus’yakh River, cordon Bisarki- 25.VIII.1998, leg. A.T.; 1 #, Abies, Picea, Betula forest, in moss, na. Moss and litter on swamp amid flood plain forest near foot 26.VIII.1998, leg. A.T. of slope: Menyanthes trifoliata, Equisetum spp., Sphagnum squar- 1 #, Noyabrsky, dry Pinus forest, Ledum, Vaccinium vitis- rosum (sparse), Sph. ?centrale , Sph. spp., Nardosmia frigida, idea , V . uliginosum , Empetrum, in Cladina pads, 10.VIII.2000, Carex spp., Gramineae, Salix sp., Comarum palustre, Filipendula leg. A.T. ulmaria, ?Tomenthypnum sp., Plagiomnium sp. etc., 27.X.1998, 1 $, Tyumen, VI.2000, leg. U. leg. A.R.; 1 #, Bolshoy Yugan River, near cordon Kamennyi. DISTRIBUTION. Throughout the Holarctic. Waterlogged forest with Picea , Abies , Pinus sylvestris, young Pinus sibirica, aspen, Betula, Ledum , Hylocomium splendens, Pleurozium schreberi , Sphagnum spp., Polytrichum spp., Carex Incestophantes crucifer (Menge, 1866) spp., Gramineae, Linnaea borealis , Vaccinium vitis-idaea , V. myrtillus, 24.VIII.1999, leg. A.R.; 1 #, Bolshoy Yugan River, MATERIAL. 1 $, Yuganskiy Reserve, Nyogus’yakh River near cordon Kamennyi. Margin of small open forest swamp: near Kogontchina-2 field research station. Mosses and litter on Gramineae, Carex spp., Sphagnum spp., Polytrichum commune, swamp with Pinus sylvestris, Betula, Ledum palustre, Andromeda Comarum palustre et al., 24.VIII.1999, leg. A.R.; 1 $, Malyi polifolia, Chamaedaphne calyculata, Vaccinium uliginosum, Erio- Yugan River Basin, 3–5 km SW of cordon at Kol-Kotchen- phorum sp., Oxycoccus palustris, Sphagnum fuscum, Sph. magel- Yagun River, near lake. Moss and litter at lake shore (on cape 58 A.V. Tanasevitch near hut): Padus , Salix, young Populus tremula, sedge and ae, Ledum palustre etc., 15.VIII.2002, leg. A.R.; 1 #, Ay-Magrom- graminoid tussocks, Comarum palustre, Equisetum spp., ?Aula- sy River Basin, Medvezhyi Ugol cordon, sweeping on Carex comnium sp. et al., 11.IX.1999, leg. A.R.; 2 ##, 5 $$, Malyi rostrata , C. spp., Gramineae, Eriophorum sp. etc., mosses and Yugan River Basin, 3–5 km SW of cordon at Kol-Kotchen- litter at border of sedge-mossy swamp (including rill source): Yagun River, near lake. Mosses on swamp near N shore of lake: Carex rostrata, C. spp., Sphagnum girgensohnii, Sph. spp., Equise- Sphagnum spp., Carex spp., Eriophorum sp., Chamaedaphne tum spp., Oxycoccus spp., Chamaedaphne calyculata, Comarum calyculata, Andromeda polifolia, Oxycoccus spp., Vaccinium ulig- palustre , Calamagrostis sp., Menyanthes trifoliata etc., among inosum et al., 18.IX.1999, leg. A.R.; 1 #, Nyogus’yakh River sparse young birches, 19.IX.2002, leg. A.R.; 2 ##, 1 $, Ay- Basin near Petchpan’yakh River mouth, N shore of great lake. Magromsy River Basin, Medvezhyi Ugol cordon, mosses and Mosses, litter, shaking off from grass: Carex spp., Gramineae, litter in tussocks of Carex sp. with Sphagnum squarrosum, Sph. Comarum palustre, Salix sp., ?Aulacomnium sp., Plagiomnium sp. centrale, Sph . girgensohnii, Sph. ?russowii, Plagiomnium sp. etc., etc., 08.IX.2000, leg. A.R.; 4 $$, Nyogus’yakh River Basin near and also sweeping on Carex rhynchophysa among swampy Petchpan’yakh River mouth. Mosses and litter on large swamp: birch forest at SW border of the reserve, 21.IX.2002, leg. A.R.; 1 Carex spp., Comarum palustre , Equisetum sp., Eriophorum sp., $, Ay-Magromsy River Basin, 3 km N of Medvezhyi Ugol Gramineae, Rumex sp., ?Aulacomnium sp., Plagiomnium sp., cordon, mosses and litter in hummocky with Carex sp., Filipen- Ptilium crista-castrensis, Sphagnum sp., Chamaenerium angustifo- dula ulmaria , Comarum palustre , Plagiomnium sp., Climacium lium, sparse Betula & Salix sp., spots of dwarf birch on dendroides, Sphagnum russowii, Sph. spp. etc., on flood-plain of hummocks etc., 11.IX.2000, leg. A.R.; 1 #, 3 $$, Nyogus’yakh rill, 03.X.2002, leg. A.R. River Basin near Petchpan’yakh River mouth. Mosses and litter 1 $, Tobolsk Field Research Station, mosses and litter and on large swamp: Carex spp., Comarum palustre, Equisetum sp., in sweeping on small swamp with Carex spp., Poaceae, Sphag- Eriophorum sp., Gramineae, Rumex sp., ?Aulacomnium sp., Plagi- num girgensohnii , Sph . squarrosum , Sph. ?riparium , Sph. ?balti- omnium sp., Ptilium crista-castrensis, Sphagnum sp., Chamaeneri- cum, Sph. centrale etc., 21.IX.2003, leg. A.R.; 1 #, mosses and um angustifolium, Betula and Salix sp. etc., 13.IX.2000, leg. A.R.; litter in swampy birch forest with Pinus sylvestris , Ledum 1 #, 2 $$, Vuya-Yany River near Ay-Vuya-Yany River mouth. palustre, Vaccinium uliginosum, Carex globularis, Sphagnum gir- Flood-plain lake shore: young Betula and Populus tremula, gensohnii , Sph. ?russowii , Sph. spp., Polytrichum commune , P. Carex spp., Filipendula ulmaria, Gramineae, Sphagnum girgen- strictum , Pleurozium schreberi, ?Aulacomnium sp., Climacium sohnii, Aulacomnium sp., Climacium dendroides, Comarum palustre, dendroides etc., 30.IX.2003, leg. A.R.; 1 $, plant debris among 23.VIII.2000, leg. A.R.; 2 ##, Nyogus’yakh River near Kogontch- Carex sp. and Poaceae on promontory at margin of inundated ina-2 field research station. Clayish river bank: Carex spp., flood-plain of Varpak River; 06.VI.2004, leg. A.R. Equisetum sp., Gramineae, Mentha sp. etc., (shaking off sedges 1 $, Luginetsky, Abies, Picea, Betula forest, in moss, VIII.1998, and Gramineae), 07.IX.2000, leg. A.R.; 1 #, 2 $$, Nyogus’yakh leg. A.T. River Basin near Petchpan’yakh River mouth. Mosses and litter 1 $, Samotlor, Betula forest, glade, in grass, Aug. 1999, leg. A.T. in swampy flood-plain forest, between Betula, Abies sibirica, 1 $, Tyumen, VI.2000, leg. U. Picea obovata, Salix sp., Pinus sibirica etc.: tussocks of Carex spp., DISTRIBUTION. Throughout the Holarctic. Filipendula ulmaria, Gramineae, Comarum palustre, Menyanthes trifoliata , Plagiomnium sp., Aulacomnium sp., Climacium den- droides etc., 12.IX.2000, leg. A.R.; 2 $$, near S border of buffer Leptorhoptrum robustum (Westring, 1851) area of Yuganskiy Reserve, Kolynlor Lake. Lake shore: Carex spp., Gramineae, Sphagnum spp. etc., 29.VIII.2001, leg. A.R.; 1 $, 1996 Leptorhoptrum robustum, Esyunin, Ekosistemy Sred- near S border of buffer area of Yuganskiy Reserve, Kolynlor nego Priob’ya, 1, p. 71. Lake. Mosses and litter under Betula, Pinus sylvestris and Pinus sibirica in swamped forest near W shore of lake and between MATERIAL. 1 #, Yuganskiy Reserve, Nyogus’yakh River, Carex spp. with Sphagnum girgensohnii at the lake shore, cordon Bisarkina. River bank: mosses and litter under Salix 01.IX.2001, leg. A.R.; 1 #, 1 $, near S border of buffer area of spp., Padus, Matteuccia struthiopteris, Filipendula ulmaria, Urtica Yuganskiy Reserve, Koimlor (Krimlor) Lake. Mosses and litter dioica etc., 29.X.1998, leg. A.R.; 2 $$, Nyogus’yakh River, cordon in tussocks between sparse Betula and Salix sp. near lake shore: Bisarkina. Parching rill near cordon: mosses and litter in rill- Carex spp., Gramineae, Sphagnum squarrosum , Sph . centrale, bed and by banks (Carex spp., Equisetum sylvaticum, Sphagnum Sph . girgensohnii , Comarum palustre, sparse Equisetum sp. ?riparium, Sph. ?girgensohnii, Polytrichum commune, Filipendula 02.IX.2001, leg. A.R.; 2 ##, near S border of buffer area of ulmaria, Gramineae, Veratrum, Linnaea, Maianthemum, Trienta- Yuganskiy Reserve, Kolynlor Lake. Lake shore: Carex spp., lis, Tomenthypnum sp., Plagiomnium sp. etc.), 31.X.1998, leg. A.R.; Gramineae, Sphagnum girgensohnii , Sph . squarrosum , Sph. spp. 1 $, Malyi Yugan River Basin, Kol-Kotchen-Yagun River, 3–4 sparse Betula, Salix sp. etc., 04.IX.2001, leg. A.R.; 1 $, near S km S of cordon. Moss and litter at river bank: Padus, Salix sp., border of buffer area of Yuganskiy Reserve, rill between Spiraea spp., Filipendula ulmaria , Ribes nigrum , Gallium sp., Kolynlor Lake and Koimlor (Krimlor) Lake. Rill bank near Carex spp., Gramineae, Equisetum spp., ?Aulacomnium sp., Plagi- source: tussocks with Carex spp. and Gramineae, Comarum omnium sp., Climacium dendroides et al., 13.IX.1999, leg. A.R.; 2 palustre , Sphagnum squarrosum , Sph . girgensohnii , Sph. spp., ##, 1 $, Vuya-Yany River near Ay-Vuya-Yany River mouth. Plagiomnium sp. etc., 04.IX.2001, leg. A.R.; 1 $, Kol-Kotchen- Flood-plain depression: Filipendula ulmaria, Carex sp., Gramineae, Yagun River (confluent of Malyi Yugan River) NE of cordon. Spiraea sp., Ribes nigrum, Comarum palustre, Sphagnum squarro- Swampy flood-plain birch forest: tussocks of Carex spp. & sum, Sph. girgensohnii, Climacium dendroides, Aulacomnium sp., Gramineae, Comarum palustre , Filipendula ulmaria, Ranuncu- Plagiomnium sp. etc., 24.VIII.2000, leg. A.R.; 1 $, Nyogus’yakh laceae, Sphagnum girgensohnii, Sph. spp., Climacium dendroides, River near Kogontchina-2 field research station. River banks Plagiomnium sp. etc., 23.IX.2001, leg. A.R.; 2 $$, Kol-Kotchen- near rill mouths: Carex sp., Gramineae, Filipendula ulmaria, Yagun River Basin (confluent of Malyi Yugan River), lake near Salix sp., Padus etc., 03.IX.2000, leg. A.R. cordon. Isolated tussocks of Carex spp. and Gramineae between 12 ## & 17 $$, Tomsk, Abies forest, in moss and litter, sparse birch wood with Padus and Salix sp. at lake shore, 15–16.VIII.1998, leg. A.T. (+3C?), 29.IX.2001, leg. A.R.; 1 #, 3 $$, Kol-Kotchen-Yagun 1 $, Tyumen, VI.2000, leg. U. River Basin (confluent of Malyi Yugan River), lake near DISTRIBUTION. Throughout the Holarctic. cordon. Mosses and litter by NE shore of lake: spp., tussocks of Carex spp., Calamagrostis sp., Sphagnum squarrosum (?aongstro- emii), Sph . centrale , Sph. ?girgensohnii , Sph . russowii between Lophomma punctatum (Blackwall, 1841) sparse birch wood with isolated Pinus sylvestris. 30.IX.2001, leg. A.R.; 2 $$, Bolshoy Yugan River near Kamennyi cordon, 1996 Lophomma punctatum, Esyunin, Ekosistemy Srednego swamped birch forest with Sphagnum spp., Carex sp., Gramine- Priob’ya, 1, p. 72. Linyphiid spiders of the West Siberian Plain 59

MATERIAL. 1 $, Yuganskiy Reserve, Nyogus’yakh River, sylvaticum, E. ?pratense etc., 12.VIII.2000, leg. A.R. cordon Bisarkina. Moss and litter on swamp amid flood plain 2 ##, 1 $, near Ugut, Kynyaminskoye Lake. Sphagnum forest near foot of slope: Menyanthes trifoliata, Equisetum spp., girgensohnii, Sph. ?russowii, Sph. squarrosum, Sph. ?centrale, Sph. Sphagnum squarrosum (sparse), Sph. ?centrale , Sph. spp., Nar- spp., Equisetum sylvaticum, Polytrichum commune amid swampy dosmia frigida , Carex spp., Gramineae, Salix sp., Comarum birch forest near lake shore, 11.VIII.2001, leg. A.R.; 2 $$, palustre, Filipendula ulmaria, ?Tomenthypnum sp., Plagiomnium Kynyaminskoye Lake. Mosses and litter at swamp edge with sp. etc., 27.X.1998, leg. A.R.; 1 $, Nyogus’yakh River Basin near Carex spp., Gramineae, Juncus sp., Salix sp., Polytrichum com- Petchpan’yakh River mouth, N shore of great lake. Mosses, mune , Sphagnum spp. etc., near lake shore, 06.VIII.2002, leg. litter, shaking off from grass: Carex spp., Gramineae, Comarum A.R. palustre , Salix sp., ?Aulacomnium sp., Plagiomnium sp. etc., 1 $, Yuganskiy Reserve, near Vuya-Yany River mouth. 08.IX.2000, leg. A.R.; 1 $, Nyogus’yakh River Basin near Moss and litter in flood-plane forest with Abies, Picea, Betula, Petchpan’yakh River mouth. Mosses and litter on large swamp: Pinus sibirica , Sorbus , Vaccinium vitis-idaea , Equisetum sylvati- Carex spp., Comarum palustre , Equisetum sp., Eriophorum sp., cum, Eq. pratense, Hylocomium splendens, Pleurozium schreberi, Gramineae, Rumex sp., ?Aulacomnium sp., Plagiomnium sp., Polytrichum commune, Ptilium, Climacium, Maianthemum, Trien- Ptilium crista-castrensis, Sphagnum sp., Chamaenerium angustifo- talis, Veratrum etc., 15.VIII.1998, leg. A.R.; 1 $, near Vuya-Yany lium , Betula and Salix sp. etc., 13.IX.2000, leg. A.R.; 1 #, River mouth. Mosses and litter under Pinus sibirica, Picea, Abies, Nyogus’yakh River Basin near Petchpan’yakh River mouth. Betula with Maianthemum , Trientalis , Vaccinium vitis-idaea, Mosses and litter on large swamp: Carex spp., Comarum palus- Pleurozium, Climacium etc., 12.VIII.1998, leg. A.R.; 2 ##, near tre, Equisetum sp., Nardosmia frigida, Eriophorum sp., Gramine- Vuya-Yany River mouth. Mosses and litter in flood-plane ae, Rumex sp., ?Aulacomnium sp., Plagiomnium sp., Ptilium crista- forest with Pinus sibirica, Abies, Picea, Betula, Rosa, Vaccinium castrensis, Sphagnum sp., Chamaenerium angust, Sphagnum ?rus- vitis-idaea, Maianthemum, Trientalis, Pleurozium schreberi, Hylo- sowii, Sph. sp., Salix sp. etc., 15.IX.2000, leg. A.R.; 1 #, Vuya- comium splendens , Equisetum sylvaticum, spots of Sphagnum Yany River near Ay-Vuya-Yany River mouth. Mosses and litter ?girgensohnii and Sph. ?russowii etc., 09.VIII.1998, leg. A.R.; 1 $, on swamp: Pinus sylvestris, Ledum palustre, Andromeda polifolia, Nyogus’yakh River Basin, forest road, 3 km ENE of cordon Chamaedaphne calyculata , Oxycoccus spp., Sphagnum magel- Bisarkina. Moss and litter in forest with Picea, Pinus sibirica, P. lanicum, Sph. ?angustifolium, Eriophorum sp. etc., 27.VIII.2000, sylvestris, Betula, Equisetum pratense, Eq. sylvaticum, Pleurozium leg. A.R.; 2 ##, 3 $$, near S border of buffer area of schreberi , Hylocomium splendens , Vaccinium myrtillus , V . vitis- Yuganskiy Reserve, Kolynlor Lake. Lake shore: Carex spp., idaea, Sphagnum russowii (placely), 28.X.1998, leg. A.R.; 3 ##, Gramineae, Sphagnum spp. etc., 29.VIII.2001, leg. A.R.; 1 #, 2 $$, Bolshoy Yugan River, near cordon Kamennyi. Moss and near S border of buffer area of Yuganskiy Reserve, Kolynlor litter in pine forest: Pinus sylvestris, young Pinus sibirica, Ledum Lake. Mosses and litter under Betula, Pinus sylvestris and Pinus palustre , Vaccinium vitis-idaea , V . myrtillus , Linnaea borealis, sibirica in swamped forest near W shore of lake and between Hylocomium splendens, Pleurozium schreberi, Dicranum sp., Poly- Carex spp. with Sphagnum girgensohnii at the lake shore, trichum commune etc., 20.VIII.1999, leg. A.R.; 2 $$, right 01.IX.2001, leg. A.R.; 3 ##, 1 $, near S border of buffer area of confluent of Bolshoy Yugan River, 3 km SW of cordon Yuganskiy Reserve, Kolynlor Lake. Lake shore: Carex spp., Kamennyi. Moss and litter in flood-plain forest: Picea, Betula, Gramineae, Sphagnum girgensohnii , Sph . squarrosum , Sph. spp. Abies , Pinus sibirica , Sorbus , Vaccinium vitis-idaea , V . myrtillus, sparse Betula, Salix sp. etc., 04.IX.2001, leg. A.R.; 2 $$, near S Maianthemum bifolium, Linnaea borealis, Hylocomium splendens, border of buffer area of Yuganskiy Reserve, Kolynlor Lake. Pleurozium schreberi , Dicranum sp., Polytrichum commune, Mosses and litter by lake shore: Carex spp., Gramineae, Sphag- 21.VIII.1999, leg. A.R.; 1 $, Malyi Yugan River Basin, 3–5 km num girgensohnii, Sph. squarrosum, Sph. spp. sparse Betula, Salix SW of cordon at Kol-Kotchen-Yagun River, Moss and litter sp. etc., 05.IX.2001, leg. A.R.; 1 #, Ay-Magromsy River Basin, under Picea and Abies with Hylocomium splendens, Pleurozium Medvezhyi Ugol cordon, mosses and litter at southern border schreberi, Polytrichum commune, Linnaea borealis, sparse Equise- of sedge-mossy swamp: Carex rostrata, C. spp., Comarum palus- tum sylvaticum , Maianthemum bifolium , Trientalis europaea, tre, Equisetum spp., Sphagnum girgensohnii, Sph. spp., Plagiomni- Vaccinium vitis-idaea, 12.IX.1999, leg. A.R.; 2 ##, Malyi Yugan um sp., Aulacomnium sp., Calamagrostis sp., Menyanthes trifolia- River Basin, 3–5 km SW of cordon at Kol-Kotchen-Yagun ta etc., among sparse young birches, 04.X.2002, leg. A.R. River, near lake. Moss and litter in pine forest with Betula, DISTRIBUTION. Northern Europe, eastern Kazakhstan, Pinus sibirica, Ledum, Chamaedaphne calyculata, Vaccinium vi- in Siberia known from the Urals eastward to Yenisey River. tis-idaea , Sphagnum spp., Pleurozium schreberi , Dicranum sp., Polytrichum commune, 14.IX.1999, leg. A.R.; 2 $$, Vuya-Yany River near Ay-Vuya-Yany River mouth. Mosses and litter in Macrargus multesimus (O. Pickard-Cambridge, forest at crest line: Pinus sibirica , P . sylvestris , Picea obovata, 1875) Abies sibirica, Vaccinium vitis-idaea, V. myrtillus, Linnaea borealis, Trientalis europaea, Equisetum sylvaticum, Pleurozium schreberi, 1996 Macrargus multesimus, Esyunin, Ekosistemy Srednego Hylocomium splendens , Dicranum sp., Diphasiastrum sp, Priob’ya, 1, P. 71. 18.VIII.2000, leg. A.R.; 1 #, Vuya-Yany River near Ay-Vuya- Yany River mouth. Mosses and litter in forest at crest line: MATERIAL. 2 ##, Surgutskiy Refuge, Ob’ River Basin, Pinus sibirica, P. sylvestris, Picea obovata, Abies sibirica, Vaccinium Materikovyi Pasl Channel. Moss and litter in forest at high vitis-idaea , V . myrtillus , Linnaea borealis , Trientalis europaea, river bank with Abies , Picea , Populus tremula, young Pinus Equisetum sylvaticum, Pleurozium schreberi, Hylocomium splen- sibirica , Hylocomium splendens , Pleurozium schreberi , Polytri- dens, Dicranum sp., Diphasiastrum sp., 21.VIII.2000, leg. A.R.; 2 chum commune , Maianthemum bifolium , Vaccinium vitis-idaea, $$, Nyogus’yakh River near Kogontchina-2 field research sta- Lycopodium sp., Diphasiastrum sp., Equisetum sylvaticum , Lin- tion. Mosses and litter under Pinus sibirica , Picea obovata, naea borealis etc., 05.VIII.2000, leg. A.R.; 3 ##, 4 $$, Ob’ River Populus tremula with Linnaea borealis , Vaccinium vitis-idaea, Basin, Materikovyi Pasl Channel. Moss and litter in forest with Maianthemum bifolium, Trientalis europaea, Hylocomium splen- Abies, Picea, Populus tremula, Betula, young Pinus sibirica, Pleu- dens , Pleurozium schreberi , Equisetum sylvaticum , Eq . pratense rozium schreberi, Hylocomium splendens, Dicranum sp., Polytri- etc., 02.IX.2000, leg. A.R.; 1 $, near S border of buffer area of chum commune, Equisetum sylvaticum, Linnaea borealis, Oxalis Yuganskiy Reserve, Koimlor (Krimlor) Lake. Litter under Picea acetosella, Trientalis europaea etc., 07.VIII.2000, leg. A.R.; 1 #, obovata and Pinus sibirica with Lycopodium sp., Linnaea borea- Ob’ River Basin, Materikovyi Pasl Channel. Mosses and litter lis, ferns, Gramineae, Trientalis europaea, sparse Ledum palustre under Pinus sibirica and Picea obovata with Hylocomium splen- etc., in moist forest near lake shore, 02.IX.2001, leg. A.R.; 1 $, dens , Pleurozium schreberi , Linnaea , Vaccinium vitis-idaea , V. near S border of buffer area of Yuganskiy Reserve, rill between myrtillus, Polytrichum commune, Majanthemum bifolium, Trien- Kolynlor Lake and Koimlor (Krimlor) Lake. Mosses and litter talis europaea , Lycopodium sp., Diphasiastrum sp., Equisetum under Pinus sibirica in forest at the rill bank: Lycopodium sp., 60 A.V. Tanasevitch ferns, Linnaea borealis, Vaccinium vitis-idaea, Orthilia secunda, forest, in litter, 22–28.VIII.1998, leg. A.T.; 6 ##, 2 $$, swampy Pleurozium schreberi, Hylocomium splendens, Dicranum sp., Poly- spruce (Picea) forest, in moss, 25.VIII.1998, leg. A.T. trichum sp., Calamagrostis sp., sparse Ledum palustre etc., 1 $, Samotlor, Pinus forest, in moss and lichen, Aug. 1999, 04.IX.2001, leg. A.R.; 2 ##, Kol-Kotchen-Yagun River (conflu- leg. A.T.; 3 ##, 6 $$, Populus forest, in moss, Aug. 1999, leg. ent of Malyi Yugan River) E of cordon. Loamy river bank with A.T.; 1 $, Populus forest, under Ledum, in moss, Aug. 1999, A.T. Carex spp., Gramineae, Equisetum spp., small Rosa sp. & Salix leg.; 1 #, Populus & Pinus forest, in moss, Aug. 1999, leg. A.T. sp. etc., 16.IX.2001, leg. A.R.; 2 $$, Kol-Kotchen-Yagun River 1 $, Noyabrsky, Salix bushes along brook, litter, 15.VIII.2000, Basin (confluent of Malyi Yugan River), lake near cordon. leg. A.T.; 3 ##, 8 $$, Pinus forest, moss & lichen (Cladina & Overgrown mesotrophic swamp: mosses and litter under Pinus Cetraria), 10–12.VIII.2000, leg. A.T. sylvestris, P. sibirica, Betula with Ledum palustre, Vaccinium vitis- 1 $, Tyumen, VI.2000, leg. U. idaea , V . myrtillus , Carex globularis , Hylocomium splendens, DISTRIBUTION. Throughout the Holarctic. Pleurozium schreberi , Polytrichum commune , P . strictum , Di- cranum sp., Linnaea borealis etc., 19.IX.2001, leg. A.R.; 1 #, 2 $$, Macrargus rufus (Wider, 1834) Kol-Kotchen-Yagun River Basin (confluent of Malyi Yugan River), lake near cordon. Mosses and litter under Pinus sylves- tris , P . sibirica , Picea obovata in forest near cordon: Ledum 1996 Macrargus rufus, Esyunin, Ekosistemy Srednego Priob’ya, palustre, Chamaedaphne calyculata, Pleurozium schreberi, Hylo- 1, P. 71. comium splendens, Dicranum sp., Polytrichum commune, Vaccin- ium vitis-idaea, V. myrtillus, spots of Sphagnum girgensohnii and MATERIAL. 5 ##, 7 $$, Luginetsky, Picea & Betula forest, Sph . russowii et al., 25.IX.2001, leg. A.R.; 1 $, Kol-Kotchen- in moss, 21–28.VIII.1998, leg. A.T. Yagun River Basin (confluent of Malyi Yugan River), lake near 1 $, Tyumen Area, Nefteyugansk, mixed forests: Abies, Pinus cordon. Mosses and litter under Pinus sylvestris, P. sibirica and sibirica, Picea, Betula with Equisetum, Vaccinium spp., Empetrum, elfin wood of Abies sibirica with Vaccinium vitis-idaea , V. mosses, VIII.2001, leg. A.T. myrtillus , Linnaea borealis , Pleurozium schreberi , Hylocomium DISTRIBUTION. Europe, the Urals, West Siberia. splendens, Dicranum sp., Lycopodium sp., sparse Ledum palustre et al., in forest on hill crest NW of lake, 01.X.2001, leg. A.R.; 2 Maro saaristoi Eskov, 1980 ##, 4 $$, Kol-Kotchen-Yagun River Basin (confluent of Malyi Yugan River), lake near cordon. Mosses and litter under Pinus sibirica, P. sylvestris and Picea obovata with Sphagnum girgensoh- MATERIAL. 1 $, Yuganskiy Reserve, Nyogus’yakh River nii , Vaccinium vitis-idaea, V . myrtillus , Hylocomium splendens, near Kogontchina-2 field research station. Mosses and litter on Pleurozium schreberi , Dicranum sp., Ledum palustre, swamp with Pinus sylvestris, Betula, Ledum palustre, Andromeda Chamaedaphne calyculata et al., in forest near NE shore of polifolia, Chamaedaphne calyculata, Vaccinium uliginosum, Erio- lake. 01.X.2001, leg. A.R.; 1 #, 1 $, right riverside of Bolshoy phorum sp., Oxycoccus palustris, Sphagnum fuscum, Sph. magel- Yugan River near cordon Kamennyi. Mosses and litter in forest lanicum, Sph. ?angustifolium, Sph. spp., Rubus chamaemorus etc., with Picea obovata, Abies sibirica, Pinus sibirica, Carex spp. and 31.VIII.2000, leg. A.R.; 1 #, 2 $$, Ay-Magromsy River Basin, Gramineae with Sphagnum girgensohnii, Sph. spp., Polytrichum Medvezhyi Ugol cordon, mosses and litter at rill bank and on commune etc., in waterlogged birch forest on flood-plain, flood-plain of rill: Calamagrostis sp., Ribes spp., Rosa sp., Filipen- 21.VIII.2002, leg. A.R.; 1 #, Ay-Magromsy River Basin, Med- dula ulmaria , Matteuccia struthiopteris , Equisetum sylvaticum, vezhyi Ugol cordon, mosses and litter at the foot of slope near Sphagnum squarrosum, Sph. girgensohnii, Sph. spp., Plagiomnium border of open swamp: Pinus sylvestris, P. sibirica, Picea obovata, sp. etc., 20.IX.2002, leg. A.R.; 2 ##, Nyogus’yakh River near Juniperus communis, Ledum palustre, Chamaedaphne calyculata, Kogontchina-2 field research station. Mosses and litter under Carex globularis , Pleurozium schreberi , Dicranum polysetum, Betula, Abies sibirica, Picea obovata, Pinus sibirica with Hyloco- Polytrichum spp., Sphagnum spp., Equisetum sylvaticum , Eq. mium splendens , Linnaea borealis , Oxalis acetosella , Majanthe- pratense , Vaccinium vitis-idaea etc., 25.IX.2002, leg. A.R.; 1 $, mum bifolium , Pyrola sp., Trientalis europaea , Equisetum prat- Ay-Magromsy River Basin, Medvezhyi Ugol cordon, mosses and ense , Eq . sylvaticum etc., on 1st fluvial terrace above flood- litter under Betula and Pinus sylvestris on swampy plate at plain, 29.VIII.2000, leg. A.R. border of the reserve (about 1 km N of the cordon) with DISTRIBUTION. West and Middle Siberia, Cisokhotia, Hylocomium splendens , Pleurozium schreberi , Carex globularis, in the mountains of South Siberia registered from Tuva and Polytrichum commune, Sphagnum spp., Linnaea borealis, Equise- Sayan. This is the first record in West Siberia. tum sylvaticum etc., (+6C?), 27.IX.2002, leg. A.R.; 4 $$, Malyi Yugan River, near cordon below Lyarykni River mouth, mosses Maro sp. and litter in forest near river bank: Pleurozium schreberi, Hylocomium splendens, Dicranum polysetum, sparse Polytrichum commune, spots of Sphagnum girgensohnii , Linnaea borealis, 1996 Maro sublestus, Esyunin, Ekosistemy Srednego Priob’ya, Vaccinium vitis-idaea, Equisetum sylvaticum, Maianthemum bifo- 1, p. 71. (not seen). lium, Carex globularis, Rubus saxatilis, Trientalis europaea, Poaceae, Oxalis acetosella etc., under Pinus sibirica , P . sylvestris , Abies, MATERIAL. 1 $, Tomsk Distr., Luginetsky, Abies, Picea, Picea, Betula, Populus tremula, 18.VIII.2003, leg. A.R. Betula forest, in moss, VIII.1998, leg. A.T. 1 $, Tobolsk Field Research Station, mosses and litter 1 #, Tyumen, VI.2000, leg. U. under Pinus sylvestris, P. sibirica, Picea, young Abies with Ledum NOTE. This species is new and will be described else- palustre , Vaccinium vitis-idaea , V . myrtillus, Poaceae, Carex where. globularis , Linnaea borealis , Pleurozium schreberi , Hylocomium splendens , Dicranum polysetum etc., on upper part of slope, 02.X.2003, leg. A.R.; 1 $, near Gornoslinkino, right bank of Maso sundevalli (Westring, 1851) Irtysh River, mosses and litter in pine-ledum sparse forest with Chamaedaphne calyculata, Salix spp., Vaccinium uliginosum, V. 1996 Maso sundevalli, Esyunin, Ekosistemy Srednego Priob’ya, vitis-idaea, Oxycoccus sp., Rubus chamaemorus, Carex spp., Erio- 1, p. 72. phorum sp., Poaceae, Sphagnum ?balticum , Sph. ?russowii , Sph. magellanicum, Sph. fuscum, Pleurozium schreberi, Dicranum pol- MATERIAL. 1 #, 2 $$, Surgutskiy Refuge, Ob’ River Basin, ysetum etc., 12.VI.2004, leg. A.R. Materikovyi Pasl Channel. Moss and litter in forest at high 6 ##, 3 $$, Luginetsky, Abies, Picea, Betula forest, in moss, river bank with Abies , Picea , Populus tremula, young Pinus VIII.1998, leg. A.T.; 1 #, 6 $$, Picea & Betula forest, in moss, sibirica , Hylocomium splendens , Pleurozium schreberi , Polytri- 22–28.VIII.1998, leg. A.T.; 5 ## , Picea , Populus & Betula chum commune , Majanthemum bifolium , Vaccinium vitis-idaea, Linyphiid spiders of the West Siberian Plain 61

Lycopodium sp., Diphasiastrum sp., Equisetum sylvaticum, Linnaea MATERIAL. 1 #, Noyabrsky, Salix bushes along brook, borealis etc., 05.VIII.2000, leg. A.R.; 1 $, Ob’ River Basin, Materik- litter, 15.VIII.2000, leg. A.T. ovyi Pasl Channel. Moss and litter in forest with Abies, Picea, DISTRIBUTION. Throughout the Holarctic. Populus tremula, Betula, young Pinus sibirica, Pleurozium schreberi, Hylocomium splendens, Dicranum sp., Polytrichum commune, Eq- Micrargus herbigradus (Blackwall, 1854) uisetum sylvaticum, Linnaea borealis, Oxalis acetosella, Trientalis europaea etc., 07.VIII.2000, leg. A.R.; 2 $$, Ob’ River Basin, Materikovyi Pasl Channel, 2 km S of cordon. Mosses and litter in 1996 Micrargus herbigradus, Esyunin, Ekosistemy Srednego forest with Pinus sibirica, Populus tremula, Picea obovata, Pinus Priob’ya, 1, p. 72. sylvestris , Sorbus sibirica , Hylocomium splendens , Pleurozium schreberi , Dicranum sp., Polytrichum commune , Lycopodium sp., MATERIAL. 1 #, Yuganskiy Reserve, Nyogus’yakh River, Diphasiastrum sp., Diplazium sibiricum, Vaccinium vitis-idaea, V. cordon Bisarkina. Moss and litter at swamp amid flood-plain myrtillus, Majanthemum bifolium, Trientalis europaea, Equisetum forest near foot of slope: Menyanthes trifoliata, Equisetum sp., sylvaticum, Ledum palustre etc., 09.VIII.2000, leg. A.R.; Sphagnum spp., Comarum palustre, Filipendula ulmaria, ?Tomen- 2 $$, Yuganskiy Reserve, Malyi Yugan River Basin, 3-5 km thypnum sp., Plagiomnium sp. etc., with sparse Betula, Picea, SW of cordon at Kol-Kotchen-Yagun River, Moss and litter Abies, Pinus sibirica, 25.X.1998, leg. A.R.; 2 ##, 6 $$, Nyogus’yakh under Picea and Abies with Hylocomium splendens, Pleurozium River, cordon Bisarkina. Parching rill near cordon: mosses and schreberi, Polytrichum commune, Linnaea borealis, sparse Equise- litter in rill-bed and by banks (Carex spp., Equisetum sylvati- tum sylvaticum , Maianthemum bifolium , Trientalis europaea, cum, Sphagnum ?riparium, Sph. ?girgensohnii, Polytrichum com- Vaccinium vitis-idaea, 12.IX.1999, leg. A.R.; 1 $, Malyi Yugan mune, Filipendula ulmaria, Gramineae, Veratrum, Linnaea, Ma- River Basin, 3–5 km SW of cordon at Kol-Kotchen-Yagun ianthemum, Trientalis, Tomenthypnum sp., Plagiomnium sp. etc.), River, near lake. Moss and litter under Pinus sibirica , Picea, 31.X.1998, leg. A.R.; 4 ##, 5 $$, Nyogus’yakh River, cordon Betula, Pinus sylvestris with Vaccinium myrtillus, V . vitis-idaea, Bisarkina. Mosses and litter on slope near parched rill about Lycopodium, Equisetum sylvaticum, Rosa sp., Pleurozium schreberi cordon: Abies , Picea , Betula, Sorbus , Hylocomium splendens, on gentle slope, 20.IX.1999, leg. A.R.; 3 ##, 1 $, near S border Pleurozium schreberi, Ptilium, Maianthemum, Trientalis, Linnaea, of buffer area of Yuganskiy Reserve, Koimlor (Krimlor) Lake. Equisetum sylvaticum, Polytrichum commune, Oxalis etc., 31.X.1998, Litter under Picea obovata and Pinus sibirica with Lycopodium leg. A.R.; 3 $$, Malyi Yugan River Basin, 3-5 km SW of cordon sp., Linnaea borealis, ferns, Gramineae, Trientalis europaea, at Kol-Kotchen-Yagun River, near lake. Moss and litter under sparse Ledum palustre etc., in moist forest near lake shore, Pinus sibirica with Vaccinium vitis-idaea, Ledum, Linnaea borea- 02.IX.2001, leg. A.R.; 1 $, Kol-Kotchen-Yagun River (confluent lis, Carex ?globularis, Equisetum sylvaticum, Hylocomium splen- of Malyi Yugan River) E of cordon. Loamy river bank with dens, Pleurozium schreberi, Dicranum sp., 31.VIII.1999, leg. A.R.; Carex spp., Gramineae, Equisetum spp., small Rosa sp. & Salix 1 $, Malyi Yugan River Basin, 3–5 km SW of cordon at Kol- sp. etc., 16.IX.2001, leg. A.R.; 1 $, Ay-Magromsy River Basin, Kotchen-Yagun River, near lake. Moss and litter under Betula Medvezhyi Ugol cordon, mosses and litter under Populus in swampy pine-birch light forest with Picea, young Pinus tremula, Pinus sibirica, Picea obovata, Pinus sylvestris with Abies sibirica, Pleurozium schreberi, Sphagnum spp., Vaccinium myrtil- thicket, Hylocomium splendens, Pleurozium schreberi, Dicranum lus, V. vitis-idaea, Ledum, Chamaedaphne calyculata, Equisetum polysetum, Polytrichum commune, Equisetum sylvaticum, Vaccin- sylvaticum, 09.IX.1999, leg. A.R.; 3 $$, Malyi Yugan River Basin, ium vitis-idaea, Linnaea borealis etc., (+3C?, after first snowfall), 3–5 km SW of cordon at Kol-Kotchen-Yagun River, near lake. 13.IX.2002, leg. A.R.; 1 #, 1 $, Ay-Magromsy River Basin, 1 km Moss and litter in pine forest with Betula, Pinus sibirica, Ledum, N of Medvezhyi Ugol cordon, mosses and litter on flood-plain Chamaedaphne calyculata, Vaccinium vitis-idaea, Sphagnum spp., of rill with Calamagrostis sp., Filipendula ulmaria, Spiraea sp., Pleurozium schreberi, Dicranum sp., Polytrichum commune (here Equisetum sylvaticum , Plagiomnium sp., Sphagnum spp. etc., and there) et al., 14.IX.1999, leg. A.R.; 2 $$, Nyogus’yakh River (+5C?), 05.X.2002, leg. A.R. near Kogontchina-2 field research station. Mosses and litter on 1 $, Tobolsk Field Research Station, in litter under Pinus swamp with Pinus sylvestris, Betula, Ledum palustre, Andromeda sibirica, Picea, Betula, Abies, Tilia, Populus tremula with Lonicera polifolia, Chamaedaphne calyculata, Vaccinium uliginosum, Erio- sp., Carex globularis, Oxalis acetosella, Pyrola sp., Delphinium sp., phorum sp., Oxycoccus palustris, Sphagnum fuscum, Sph. magel- Lathyrus sp., Equisetum sylvaticum etc., on slope, 20.IX.2003, leg. lanicum, Sph. ?angustifolium, Sph. spp., Rubus chamaemorus etc., A.R.; 1 $, in litter under Pinus sibirica , Tilia cordata , Betula, 31.VIII.2000, leg. A.R.; 2 ##, 6 $$, Nyogus’yakh River near Populus tremula, Picea obovata, Abies sibirica with Carex globu- Kogontchina-2 field research station. Rill banks from raised laris, Stellaria sp., Maianthemum bifolium, Lathyrus sp., Equise- moss to confluence with Nyogus’yakh River: Sph. ?angustifoli- tum sylvaticum, Pyrola sp. etc., on slope., 06.VI.2004, leg. A.R. um, Sph . magellanicum , Sphagnum ?russowii , Sph . girgensohnii, 4 $$, Samotlor, Pinus forest, in moss and lichen, Aug. 1999, Sph . riparium , Carex globularis , C . acuta , C. sp., Filipendula leg. A.T.; 1 $, Populus & Pinus forest, in moss, Aug. 1999, leg. A.T. ulmaria , Plagiomnium sp., Marchantia sp. etc., 04.IX.2000, leg. 13 $$, Luginetsky, Abies, Picea , Betula forest, in moss, A.R.; 1 #, 7 $$, Nyogus’yakh River Basin near Petchpan’yakh VIII.1998, leg. A.T.; 4 $$, Picea & Betula forest, in moss, 22– River mouth. Mosses and litter on large swamp: Carex spp., 28.VIII.1998, leg. A.T.; 3 $$, Picea, Populus & Betula forest, in Comarum palustre , Equisetum sp., Eriophorum sp., Gramineae, litter, 22–28.VIII.1998, leg. A.T.; 2 $$ , Picea , Abies & Betula Rumex sp., ?Aulacomnium sp., Plagiomnium sp., Ptilium crista- forest, in moss, 26.VIII.1998, leg. A.T.; 2 $$ , Picea & Betula castrensis , Sphagnum sp., Chamaenerium angustifolium, sparse forest, in moss, 21.VIII.1998, leg. A.T. Betula & Salix sp., spots of dwarf birch on hummocks etc., 2 $$, Noyabrsky, Picea wood, moss & lichen, 16.VIII.2000, 11.IX.2000, leg. A.R.; 15 ## & $$, Vuya-Yany River near Ay- leg. A.T. Vuya-Yany River mouth. Mosses and litter in forest at crest 3 $$, Nefteyugansk, mixed forests: Abies , Pinus sibirica, line: Pinus sibirica , P . sylvestris , Picea obovata , Abies sibirica, Picea, Betula with Equisetum, Vaccinium spp., Empetrum, mosses, Vaccinium vitis-idaea , V. myrtillus , Linnaea borealis , Trientalis VIII.2001, leg. A.T. europaea, Equisetum sylvaticum, Pleurozium schreberi, Hylocomi- 1 $, Tyumen, VI.2000, leg. U. um splendens, Dicranum sp., Diphasiastrum sp., 18.VIII.2000, leg. DISTRIBUTION. All over the Holarctic. A.R.; 1 #, 4 $$, Vuya-Yany River near Ay-Vuya-Yany River mouth. Mosses and litter in forest at crest line: Pinus sibirica, P. Metopobactrus prominulus (O. Pickard-Cambridge, sylvestris, Picea obovata, Abies sibirica, Vaccinium vitis-idaea, V. myrtillus, Linnaea borealis, Trientalis europaea, Equisetum sylvat- 1872) icum , Pleurozium schreberi , Hylocomium splendens , Dicranum sp., Diphasiastrum sp., 21.VIII.2000, leg. A.R.; 1 $, Vuya-Yany 1996 Metopobactrus prominulus, Esyunin, Ekosistemy Sred- River near Ay-Vuya-Yany River mouth. Mosses and litter on nego Priob’ya, 1, p. 72. swamp: Pinus sylvestris , Ledum palustre , Andromeda polifolia, 62 A.V. Tanasevitch

Chamaedaphne calyculata , Oxycoccus spp., Sphagnum magel- of lake. 01.X.2001, leg. A.R.; 4 ##, 2 $$, Kol-Kotchen-Yagun lanicum, Sph. ?angustifolium, Eriophorum sp. etc., 27.VIII.2000, River Basin (confluent of Malyi Yugan River), lake near leg. A.R.; 3 $$, Nyogus’yakh River near Kogontchina-2 field cordon. Mosses and litter under Pinus sibirica, P. sylvestris and research station. Mosses and litter under Betula, Abies sibirica, Picea obovata with Sphagnum girgensohnii , Vaccinium vitis- Picea obovata , Pinus sibirica with Hylocomium splendens , Lin- idaea, V. myrtillus, Hylocomium splendens, Pleurozium schreberi, naea borealis, Oxalis acetosella, Majanthemum bifolium, Pyrola Dicranum sp., Ledum palustre, Chamaedaphne calyculata et al., sp., Trientalis europaea, Equisetum pratense, Eq. sylvaticum etc., in forest near NE shore of lake. 01.X.2001, leg. A.R.; 3 ##, 2 on 1st fluvial terrace above flood-plain, 29.VIII.2000, leg. A.R.; $$, right riverside of Bolshoy Yugan River near Kamennyi 5 ##, 4 $$, Nyogus’yakh River near Kogontchina-2 field cordon. Mosses and litter in pine forest with Cladonia spp., research station. Mosses and peat on flood-plain forest swamp Vaccinium vitis-idaea , Pleurozium schreberi , Dicranum ?polyse- with Filipendula ulmaria, Gramineae, Ribes nigrum, Sorbus sibiri- tum, sparse Ledum palustre etc., 18.VIII.2002, leg. A.R.; 2 ##, 1 ca, Rosa sp., Matteuccia struthiopteris, Comarum palustre, Rubus $, Ay-Magromsy River Basin, Medvezhyi Ugol cordon, mosses saxatilis etc., 29.VIII.2000, leg. A.R.; 1 #, Nyogus’yakh River and litter at swamp border: Carex rostrata, Sphagnum girgen- near Kogontchina-2 field research station. River bank: Filipen- sohnii, Sph. spp. etc., among sparse young birches, 11.IX.2002, dula ulmaria, Gramineae, Salix sp., Padus avium , Gallium sp., leg. A.R.; 5 ##, 1 $, Ay-Magromsy River Basin, Medvezhyi mosses. 30.VIII.2000, leg. A.R.; 4 ##, 3 $$, Nyogus’yakh River Ugol cordon, sweeping on Carex rostrata, C. spp., mosses and near Kogontchina-2 field research station. Mosses and peat litter at swamp border: Carex rostrata, Sphagnum girgensohnii, under Carex ?globularis near small forest swamp on island in Sph. spp. etc., among sparse young birches, (+7C?), 15.IX.2002, the middle of large high moor, 02.IX.2000, leg. A.R.; 2 ##, 5 leg. A.R.; 2 $$, Ay-Magromsy River Basin, Medvezhyi Ugol $$, Nyogus’yakh River near Petchpan’yakh River mouth. Moss- cordon, mosses and litter at rill bank: Carex rhynchophysa, es and litter under Abies sibirica, Betula, Pinus sibirica, Sorbus Sphagnum spp., Plagiomnium sp. etc., 16.IX.2002, leg. A.R.; 1 $, sibirica with Hylocomium splendens , Pleurozium schreberi, Ay-Magromsy River Basin, Medvezhyi Ugol cordon, mosses and Gramineae, Equisetum pratense , Eq . sylvaticum , Maianthemum litter under Pinus sylvestris, P. sibirica, Picea obovata, Betula with bifolium, Trientalis europaea, Linnaea borealis, Vaccinium vitis- Vaccinium vitis-idaea, V. myrtillus, Pleurozium schreberi, Hyloco- idaea etc., in flood-plain forest on natural levee, 09.IX.2000, leg. mium splendens , Dicranum polysetum , Sphagnum ?warnstorfii, A.R.; 4 $$, Nyogus’yakh River Basin near Petchpan’yakh River Linnaea borealis, Equisetum sylvaticum etc., under aspen trunk, mouth. Mosses and litter in swampy flood-plain forest, between and under mosses, lichens, bark scales on bases of pine trees, Betula, Abies sibirica, Picea obovata, Salix sp., Pinus sibirica etc.: 18.IX.2002, leg. A.R.; 2 ##, 4 $$, Ay-Magromsy River Basin, tussocks of Carex spp., Filipendula ulmaria, Gramineae, Comar- Medvezhyi Ugol cordon, mosses and litter at rill bank and on um palustre, Menyanthes trifoliata, Plagiomnium sp., Aulacomni- flood-plain of rill: Calamagrostis sp., Ribes spp., Rosa sp., Filipen- um sp., Climacium dendroides etc., 12.IX.2000, leg. A.R.; 2 ##, 6 dula ulmaria , Matteuccia struthiopteris , Equisetum sylvaticum, $$, near S border of buffer area of Yuganskiy Reserve, Kolynlor Sphagnum squarrosum , Sph . girgensohnii , Sph. spp., Plagiomnium Lake. Lake shore: Carex spp., Gramineae, Sphagnum spp. etc., sp. etc., 20.IX.2002, leg. A.R.; 2 ##, Ay-Magromsy River Basin, 29.VIII.2001, leg. A.R.; 2 $$, near S border of buffer area of Medvezhyi Ugol cordon, mosses and litter in tussocks of Carex Yuganskiy Reserve, rill between Kolynlor Lake and Koimlor sp. with Sphagnum squarrosum , Sph . centrale , Sph . girgensohnii, (Krimlor) Lake. Mosses and litter under Pinus sibirica in forest Sph. ?russowii, Plagiomnium sp. etc., and also sweeping on Carex at the rill bank: Lycopodium sp., ferns, Linnaea borealis, Vaccin- rhynchophysa among swampy birch forest at SW border of the ium vitis-idaea, Orthilia secunda, Pleurozium schreberi, Hyloco- reserve, 21.IX.2002, leg. A.R.; 2 $$, Ay-Magromsy River Basin, mium splendens , Dicranum sp., Polytrichum sp., Calamagrostis Medvezhyi Ugol cordon, mosses and litter at southern border of sp., sparse Ledum palustre etc., 04.IX.2001, leg. A.R.; 3 ##, 4 $$, sedge-mossy swamp: Carex rostrata, C. spp., Comarum palustre, near S border of buffer area of Yuganskiy Reserve, Kolynlor Equisetum spp., Sphagnum girgensohnii, Sph. spp., Plagiomnium sp., Lake. Mosses and litter by lake shore: Carex spp., Gramineae, Aulacomnium sp., Calamagrostis sp., Menyanthes trifoliata etc., Sphagnum girgensohnii, Sph. squarrosum, Sph. spp. sparse Betula, among sparse young birches, (+7C?), 23.IX.2002, leg. A.R.; 1 #, 5 Salix sp. etc., 05.IX.2001, leg. A.R.; 2 ##, near S border of $$, Ay-Magromsy River Basin, Medvezhyi Ugol cordon, mosses buffer area of Yuganskiy Reserve, Kolynlor Lake. Mosses and and litter at the foot of slope near border of open swamp: Pinus litter under Pinus sylvestris, Betula, Pinus sibirica with Pleuro- sylvestris, P. sibirica , Picea obovata , Juniperus communis , Ledum zium schreberi , Ledum palustre etc., between hummocks of palustre, Chamaedaphne calyculata, Carex globularis, Pleurozium Sphagnum spp. near the lake. 05.IX.2001, leg. A.R.; 1 $, Kol- schreberi, Dicranum polysetum, Polytrichum spp., Sphagnum spp., Kotchen-Yagun River Basin (confluent of Malyi Yugan River), Equisetum sylvaticum , Eq . pratense , Vaccinium vitis-idaea etc., lake near cordon. Overgrown mesotrophic swamp: mosses and (+14– +8C?), 25.IX.2002, leg. A.R.; 3 ##, 6 $$, Ay-Magromsy litter under Pinus sylvestris , P . sibirica , Betula with Ledum River Basin, Medvezhyi Ugol cordon, mosses and litter near rill: palustre , Vaccinium vitis-idaea , V. myrtillus , Carex globularis, Plagiomnium sp., Sphagnum squarrosum, Sph. centrale, Sph. girgen- Hylocomium splendens, Pleurozium schreberi, Polytrichum com- sohnii, Sph. warnstorfii, Calamagrostis sp., Carex sp. among sparse mune, P. strictum, Dicranum sp., Linnaea borealis etc., 19.IX.2001, Salix sp. and birches, (+6C?), 27.IX.2002, leg. A.R.; 2 $$, Ay- leg. A.R.; 2 $$, Kol-Kotchen-Yagun River Basin (confluent of Magromsy River Basin, Medvezhyi Ugol cordon, mosses and Malyi Yugan River), lake near cordon. Moss and litter at lake litter near rill: Plagiomnium sp., Sphagnum squarrosum , Sph. shore (on cape near old hut): sedge and graminoid small centrale , Sph . girgensohnii , Sph . warnstorfii , Calamagrostis sp., tussocks, Comarum palustre , Climacium dendroides, ?Hypnum Carex sp. among sparse Salix sp. and birches, (+3C?), 28.IX.2002, sp., Plagiomnium sp., Sphagnum spp. et al., between young Betula leg. A.R.; 1 #, Ay-Magromsy River Basin, Medvezhyi Ugol sp. & Populus tremula with Padus , Salix sp. and Rosa sp. cordon, mosses and litter at southern border of sedge-mossy 24.IX.2001, leg. A.R.; 3 $$, Kol-Kotchen-Yagun River Basin swamp: Carex rostrata, C. spp., Comarum palustre, Equisetum spp., (confluent of Malyi Yugan River), lake near cordon. Mosses Sphagnum girgensohnii, Sph. spp., Plagiomnium sp., Aulacomnium and litter under Pinus sylvestris , P . sibirica , Picea obovata in sp., Calamagrostis sp., Menyanthes trifoliata etc., among sparse forest near cordon: Ledum palustre, Chamaedaphne calyculata, young birches, 04.X.2002, leg. A.R.; 2 ##, 7 $$, Ay-Magromsy Pleurozium schreberi, Hylocomium splendens, Dicranum sp., Poly- River Basin, 1 km N of Medvezhyi Ugol cordon, mosses and trichum commune, Vaccinium vitis-idaea, V. myrtillus, spots of litter on flood-plain of rill with Calamagrostis sp., Filipendula Sphagnum girgensohnii and Sph. russowii et al., 25.IX.2001, leg. ulmaria, Spiraea sp., Equisetum sylvaticum, Plagiomnium sp., Sph- A.R.; 2 ##, 2 $$, Kol-Kotchen-Yagun River Basin (confluent agnum spp. etc., (+5C?), 05.X.2002, leg. A.R.; 1 #, 3 $$, Ay- of Malyi Yugan River), lake near cordon. Mosses and litter Magromsy River Basin, Medvezhyi Ugol cordon, mosses and under Pinus sylvestris, P. sibirica and elfin wood of Abies sibirica litter in flood-plain afforested sedge hummocky and on flood- with Vaccinium vitis-idaea, V. myrtillus, Linnaea borealis, Pleuro- plain of rill with Filipendula ulmaria , Ribes spp., Comarum zium schreberi, Hylocomium splendens, Dicranum sp., Lycopodi- palustre, Equisetum sylvaticum, Plagiomnium sp., Climacium den- um sp., sparse Ledum palustre et al., in forest on hill crest NW droides, Carex sp., Calamagrostis sp., Sphagnum squarrosum, Sph. Linyphiid spiders of the West Siberian Plain 63 spp. etc., (+4C?), 01.X.2002, leg. A.R.; 1 #, Ay-Magromsy River MATERIAL. 1 $, Tyumen, VI.2000, leg. U. Basin, 3 km N of Medvezhyi Ugol cordon, mosses and litter DISTRIBUTION. All over the Palaearctic and western under Larix sibirica and Juniperus sp. among Abies, Picea, Betula Nearctic. with Hylocomium splendens , Pleurozium schreberi , Dicranum polysetum , Linnaea borealis , Polytrichum commune , Diphasias- trum complanatum, Vaccinium vitis-idaea, V. myrtillus etc., on Microneta viaria (Blackwall, 1841) gentle slope, 03.X.2002, leg. A.R.; 3 $$, Ay-Magromsy River Basin, 3 km N of Medvezhyi Ugol cordon, mosses and litter in 1996 Microneta viaria, Esyunin, Ekosistemy Srednego hummocky with Carex sp., Filipendula ulmaria, Comarum palus- Priob’ya, 1, p. 71. tre, Plagiomnium sp., Climacium dendroides, Sphagnum russowii, Sph. spp. etc., on flood-plain of rill, 03.X.2002, leg. A.R.; 3 $$, MATERIAL. 3 ##, 1 $, Surgutskiy Refuge, Ob’ River Malyi Yugan River, near cordon below Maalyakh River mouth, Basin, Materikovyi Pasl Channel. Moss and litter in forest at mosses and litter on swamp with Sphagnum magellanicum, Sph. high river bank with Abies, Picea, Populus tremula, young Pinus ?balticum , Sph . fuscum , Sph. spp., Carex sp., Eriophorum sp., sibirica , Hylocomium splendens , Pleurozium schreberi , Polytri- Chamaedaphne calyculata , Ledum palustre , Andromeda polifo- chum commune , Maianthemum bifolium , Vaccinium vitis-idaea, lia, Oxycoccus sp., sparse Pinus sylvestris etc., and in sweeping, Lycopodium sp., Diphasiastrum sp., Equisetum sylvaticum , Lin- 20.VIII.2003, leg. A.R.; 1 $, Malyi Yugan River, near cordon naea borealis etc., 05.VIII.2000, leg. A.R.; 4 $$, Ob’ River Basin, below Lyarykni River mouth, mosses and litter in forest near Materikovyi Pasl Channel. Litter between Gramineae and Equi- river bank: Pleurozium schreberi , Hylocomium splendens , Di- setum spp. under bushes and young Populus tremula at small cranum polysetum, sparse Polytrichum commune, spots of Sphag- river bank, 05.VIII.2000, leg. A.R.; 2 ##, Ob’ River Basin, num girgensohnii, Linnaea borealis, Vaccinium vitis-idaea, Equi- Materikovyi Pasl Channel. Mosses and litter on bog near glade: setum sylvaticum, Maianthemum bifolium, Carex globularis, Ru- tussocks with Carex ?globularis , Sphagnum ?girgensohnii , Sph. bus saxatilis, Trientalis europaea, Poaceae, Oxalis acetosella etc., spp., Linnaea borealis , Equisetum sylvaticum, Vaccinium vitis- under Pinus sibirica , P . sylvestris , Abies , Picea , Betula , Populus idaea, Ledum palustre, 06.VIII.2000, leg. A.R.; 5 $$, Ob’ River tremula, 18.VIII.2003, leg. A.R. Basin, Materikovyi Pasl Channel. Moss and litter in forest with 1 $, Tobolsk Field Research Station, mosses and litter under Abies, Picea, Populus tremula, Betula, young Pinus sibirica, Pleu- Betula with Carex globularis, Pleurozium schreberi, Linnaea borea- rozium schreberi, Hylocomium splendens, Dicranum sp., Polytri- lis, Pyrola sp., Rubus idaeus etc., on gentle slope near crest of chum commune, Equisetum sylvaticum, Linnaea borealis, Oxalis Spartakovskaya Mt. 25.IX.2003, leg. A.R.; 1 $, in mosses and litter acetosella, Trientalis europaea etc., 07.VIII.2000, leg. A.R.; 1 $, under Betula , Picea , Alnus with Pyrola sp., Carex globularis, Ob’ River Basin, Materikovyi Pasl Channel. Mosses and litter Poaceae, Equisetum sylvaticum , Linnaea borealis , Pleurozium under Pinus sibirica and Picea obovata with Hylocomium splen- schreberi , Dicranum polysetum , Oxalis acetosella , Gallium sp., dens , Pleurozium schreberi , Linnaea , Vaccinium vitis-idaea , V. Aegopodium podagraria, Rubus idaeus, R . saxatilis etc., on slope myrtillus, Polytrichum commune, Maianthemum bifolium, Trien- (from foot to top), 28.IX.2003, leg. A.R.; 1 $, mosses and litter talis europaea , Lycopodium sp., Diphasiastrum sp., Equisetum under Betula, Pinus sibirica, Abies with Carex globularis, Linnaea sylvaticum, E. ?pratense etc., 12.VIII.2000, leg. A.R. borealis, Maianthemum bifolium, Vaccinium vitis-idaea, V. myrtil- 2 $$, Yuganskiy Reserve, Nyogus’yakh River, cordon Bisarki- lus , Equisetum sylvaticum , Hylocomium splendens , Pleurozium na. Mosses and litter on slope (from rill-bed to crest) near schreberi, Dicranum polysetum, Sphagnum girgensohnii, Sph . rus- cordon: Abies , Picea , Pinus sibirica , Betula, Populus tremula, sowii, Sph. warnstorfii, Lycopodium sp., Diplazium sibiricum, Oxa- Sorbus , Vaccinium vitis-idaeae , V. myrtillus , Equisetum sylvati- lis acetosella, Rubus idaeus, R. saxatilis etc., 24.IX.2003, leg. A.R. cum , Pleurozium schreberi , Hylocomium splendens , Maianthe- 5 ##, 3 $$, Luginetsky, Abies, Picea, Betula forest, in moss, mum , Trientalis , Carex ?globularis, graminoids etc., 22.X.1998, 26.VIII.1998, leg. A.T.; 3 ##, 2 $$, swampy spruce (Picea) leg. A.R.; 1 $, Malyi Yugan River, 3 km up-stream off Vuya- forest, in moss, 25.VIII.1998, leg. A.T.; 3 ##, 2 $$, Picea, Abies Yany River mouth. Litter in flood-plane birch forest with & Betula forest, in moss, 26.VIII.1998, leg. A.T. Maianthemum, young Picea and Abies, Rosa sp. etc., 14.VIII.1998, 3 ##, 5 $$, Samotlor, Betula forest, glade, in grass, Aug. leg. A.R.; 1 $, Nyogus’yakh River Basin, forest road, 3 km ENE 1999, leg. A.T. of cordon Bisarkina. Moss and litter in forest with Picea, Pinus 3 ##, Tyumen Area, Noyabrsky, dry Pinus forest, Ledum, sibirica, P. sylvestris, Betula, Equisetum pratense, Eq. sylvaticum, Vaccinium vitis-idea, V. uliginosum, Empetrum, in Cladina pads, Pleurozium schreberi, Hylocomium splendens, Vaccinium myrtil- 10.VIII.2000, leg. A.T. lus, V . vitis-idaea, Sphagnum russowii (placely), 28.X.1998, leg. 1 #, 5 $$, Nefteyugansk, mixed forests: Abies, Pinus sibirica, A.R.; 1 #, Nyogus’yakh River, cordon Bisarkina. Mosses and Picea, Betula with Equisetum, Vaccinium spp., Empetrum, mosses, litter on slope near parched rill about cordon: Abies , Picea, VIII.2001, leg. A.T. Betula, Sorbus , Hylocomium splendens , Pleurozium schreberi, DISTRIBUTION. Widespread in Europe, the Caucasus Ptilium, Maianthemum, Trientalis, Linnaea, Equisetum sylvaticum, and the Urals; in Asia known in West and Middle Siberia, Polytrichum commune , Oxalis etc., 31.X.1998, leg. A.R.; 3 $$, Kamchatka; through the mountains of South Siberia east- Bolshoy Yugan River, near cordon Kamennyi. Waterlogged ward to the southern part of Khabarovsk Prov., Maritime forest with Picea , Abies , Pinus sylvestris, young Pinus sibirica, Prov., Kurile Islands, Sakhalin; China, Japan. aspen, Betula, Ledum, Hylocomium splendens, Pleurozium schreberi, Sphagnum spp., Polytrichum spp., Carex spp., Gramineae, Lin- naea borealis , Vaccinium vitis-idaea , V. myrtillus, 24.VIII.1999, Micrargus subaequalis (Westring, 1851) leg. A.R.; 1 $, Malyi Yugan River Basin, 3–5 km SW of cordon at Kol-Kotchen-Yagun River, near lake. Moss and litter under MATERIAL. 1 #, 2 $$, Nefteyugansk, mixed forests: Abies, Pinus sibirica with Vaccinium vitis-idaea, Ledum, Linnaea borea- Pinus sibirica , Picea , Betula with Equisetum , Vaccinium spp., lis, Carex ?globularis, Equisetum sylvaticum, Hylocomium splen- Empetrum, mosses, VIII.2001, leg. A.T. dens, Pleurozium schreberi, Dicranum sp., 31.VIII.1999, leg. A.R.; DISTRIBUTION. Europe, the Caucasus, eastern Kaza- 4 $$, Malyi Yugan River Basin, 3–5 km SW of cordon at Kol- khstan, Middle Asia, the Urals and West Siberia; China. Kotchen-Yagun River, near lake. Moss and litter under Pinus This is the first record in West Siberia. sibirica , P . sylvestris, young Abies with Hylocomium splendens, Pleurozium schreberi, Dicranum sp., Vaccinium myrtillus, V. vitis- idaea, Linnaea borealis, sparse Ledum on low knoll, 09.IX.1999, Microlinyphia pusilla (Sundevall, 1830) leg. A.R.; 1 $, Vuya-Yany River near Ay-Vuya-Yany River mouth. Mosses and litter in forest at crest line: Pinus sibirica, P. 1996 Microlinyphia pusilla, Esyunin, Ekosistemy Srednego sylvestris, Picea obovata, Abies sibirica, Vaccinium vitis-idaea, V. Priob’ya, 1, p. 71. myrtillus, Linnaea borealis, Trientalis europaea, Equisetum sylvat- 64 A.V. Tanasevitch icum , Pleurozium schreberi , Hylocomium splendens , Dicranum leg. A.R.; 1 $, Tobolsk Field Research Station, mosses and litter sp., Diphasiastrum sp. 21.VIII.2000, leg. A.R.; 2 ##, Vuya-Yany under Betula , Pinus sibirica , Alnus , Abies , Tilia cordata with River Basin near Ay-Vuya-Yany River mouth (2 km E of Carex globularis, Oxalis acetosella, Stellaria sp., Linnaea borealis, cordon). Mosses and litter under Picea obovata, Pinus sibirica, P. Delphinium sp., Maianthemum bifolium, Pyrola sp., Rubus saxati- sylvestris, Betula on flood-plain of rill with Pleurozium schreberi, lis, sparse Pleurozium schreberi etc., on gentle slope near Varpak Hylocomium splendens, Sphagnum girgensohnii, Polytrichum com- River, 05.VI.2004, leg. A.R.; 1 $, right bank of Irtysh River up- mune, Equisetum sylvaticum, Carex ?globularis, Linnaea borealis, stream of Tobolsk Field Research Station, leaf litter near top of Vaccinium vitis-idaea , Oxalis acetosella etc., 21.VIII.2000, leg. slope, under Betula, Tilia, Populus tremula with Carex globularis, A.R.; 2 ##, right riverside of Bolshoy Yugan River near Stellaria sp. etc., 04.VI.2004, leg. A.R. cordon Kamennyi. Mosses and litter in forest with Picea 8 ##, 5 $$, Luginetsky, Abies, Picea, Betula forest, in moss, obovata, Abies sibirica, Pinus sibirica, Carex spp. and Gramineae 26.VIII.1998, leg. A.T.; 12 ##, 14 $$, Picea & Betula forest, in with Sphagnum girgensohnii , Sph. spp., Polytrichum commune moss, 22–28.VIII.1998, leg. A.T.; 30 ## & $$, Picea, Populus & etc., in waterlogged birch forest on flood-plain, 21.VIII.2002, Betula forest, in litter, 22–28.VIII.1998, leg. A.T.; 1 $, swampy leg. A.R.; 1 $, Ay-Magromsy River Basin, Medvezhyi Ugol spruce (Picea) forest, in moss, 25.VIII.1998, leg. A.T.; ca. 20 ## cordon, mosses and litter under Populus tremula, Pinus sibirica, & $$, Picea & Betula forest, in moss, 21.VIII.1998, leg. A.T. Picea obovata, Pinus sylvestris with Abies thicket, Hylocomium 3 ##, 6 $$, Samotlor, Populus forest, in moss, Aug. 1999, splendens , Pleurozium schreberi , Dicranum polysetum , Polytri- A.T. leg.; 4 ##, 7 $$, Populus forest, under Ledum, in moss, chum commune , Equisetum sylvaticum , Vaccinium vitis-idaea, Aug. 1999, A.T. leg.; 3 ##, 11 $$, Populus & Pinus forest, in Linnaea borealis etc., (+3 C, after first snowfall), 13.IX.2002, leg. moss, Aug. 1999, A.T. leg.; 5 ##, 12 $$, Betula forest, glade, in A.R.; 1 $, Ay-Magromsy River Basin, Medvezhyi Ugol cordon, grass, Aug. 1999, leg. A.T. mosses and litter under Pinus sylvestris, P. sibirica, Picea obovata, DISTRIBUTION. All over the Holarctic. Betula with Vaccinium vitis-idaea , V. myrtillus , Pleurozium schreberi , Hylocomium splendens , Dicranum polysetum , Sphag- Minicia marginella (Wider, 1834) num ?warnstorfii , Linnaea borealis , Equisetum sylvaticum etc., under aspen trunk, and under mosses, lichens, bark scales on bases of pine trees, 18.IX.2002, leg. A.R.; 2 $$, Ay-Magromsy 1996 Minicia marginella, Esyunin, Ekosistemy Srednego River Basin, Medvezhyi Ugol cordon, mosses and litter under Priob’ya, 1, p. 72. Betula and Pinus sylvestris on swampy plate at border of the reserve (about 1 km N of the cordon) with Hylocomium MATERIAL. 1 #, 1 $, Yuganskiy Reserve, Malyi Yugan splendens , Pleurozium schreberi , Carex globularis , Polytrichum River, near cordon below Maalyakh River mouth, mosses and commune , Sphagnum spp., Linnaea borealis , Equisetum sylvati- litter on swamp with Sphagnum magellanicum, Sph. ?balticum, cum etc., (+6C?), 27.IX.2002, leg. A.R.; 3 ##, 1 $, Ay-Magromsy Sph. fuscum, Sph. spp., Carex sp., Eriophorum sp., Chamaedaphne River Basin, 3 km N of Medvezhyi Ugol cordon, mosses and calyculata, Ledum palustre, Andromeda polifolia, Oxycoccus sp., litter under Larix sibirica and Juniperus sp. among Abies, Picea, sparse Pinus sylvestris etc., and in sweeping, 20.VIII.2003, leg. Betula with Hylocomium splendens , Pleurozium schreberi , Di- A.R. cranum polysetum, Linnaea borealis, Polytrichum commune, Dipha- DISTRIBUTION. Europe, eastern Kazakhstan, Middle siastrum complanatum , Vaccinium vitis-idaea , V. myrtillus etc., Asia, the Urals; in Siberia known in West Siberia, Cisokho- on gentle slope, 03.X.2002, leg. A.R. tia and East Siberia; in South Siberia registered from Tuva 2 $$, Tobolsk Field Research Station, mosses and litter and Sayan. under Betula, Pinus sibirica, Alnus, Abies with Carex globularis, Oxalis acetosella , Linnaea borealis , Delphinium sp., Maianthe- mum bifolium , Pyrola sp., Rubus saxatilis, sparse Pleurozium Minyrioloides trifrons (O. Pickard-Cambridge, schreberi etc., on gentle slope near Varpak River, 22.IX.2003, 1863) leg. A.R.; 6 ##, 4 $$, mosses and litter under Pinus sylvestris, P. sibirica, Picea, young Abies with Ledum palustre, Vaccinium vitis- MATERIAL. 2 $$, Yuganskiy Reserve, Ay-Magromsy River idaea, V . myrtillus, Poaceae, Carex globularis , Linnaea borealis, Basin, Medvezhyi Ugol cordon, mosses and litter near rill: Pleurozium schreberi, Hylocomium splendens, Dicranum polyse- Plagiomnium sp., Sphagnum squarrosum, Sph. centrale, Sph. gir- tum etc., on upper part of slope, 02.X.2003, leg. A.R.; 5 ##, 8 gensohnii, Sph . warnstorfii, Calamagrostis sp., Carex sp. among $$, in litter under Pinus sibirica , Picea , Betula , Abies , Tilia, sparse Salix sp. and birches, (+3C?), 28.IX.2002, leg. A.R. Populus tremula with Lonicera sp., Carex globularis , Oxalis 1 $, Tobolsk Field Research Station, mosses and litter acetosella , Pyrola sp., Delphinium sp., Lathyrus sp., Equisetum under Betula , Pinus sibirica , Alnus , Abies , Tilia cordata with sylvaticum etc., on slope, 20.IX.2003, leg. A.R.; 1 $, mosses and Carex globularis, Oxalis acetosella, Stellaria sp., Linnaea borealis, litter under Betula with Carex globularis, Pleurozium schreberi, Delphinium sp., Maianthemum bifolium, Pyrola sp., Rubus saxati- Linnaea borealis, Pyrola sp., Rubus idaeus etc., on gentle slope lis, sparse Pleurozium schreberi etc., on gentle slope near Varpak near crest of Spartakovskaya Mt. 25.IX.2003, leg. A.R.; 3 ##, 5 River, 05.VI.2004, leg. A.R. $$, in mosses and litter under Betula, Picea, Alnus with Pyrola 1 #, 10 $$, Nefteyugansk, mixed forests: Abies , Pinus sp., Carex globularis, Poaceae, Equisetum sylvaticum , Linnaea sibirica, Picea, Betula with Equisetum, Vaccinium spp., Empetrum, borealis, Pleurozium schreberi, Dicranum polysetum, Oxalis ace- mosses, VIII.2001, leg. A.T. tosella , Gallium sp., Aegopodium podagraria , Rubus idaeus , R. DISTRIBUTION. Throughout the Holarctic. saxatilis etc., on slope (from foot to top), 28.IX.2003, leg. A.R.; 2 ##, 6 $$, Tobolsk Field Research Station, mosses and litter on plate crest near bank of Irtysh River: birch forest with sparse Minyriolus pusillus (Wider, 1834) young Pinus sibirica, Abies, Tilia, Sorbus, Carex globularis, Poace- ae, Pyrola sp., Equisetum sylvaticum etc., 10.IX.2003, leg. A.R.; 1 1996 Minyriolus pusillus, Esyunin, Ekosistemy Srednego $, mosses and litter in swampy birch forest with Pinus sylvestris, Priob’ya, 1, p. 72. Ledum palustre, Vaccinium uliginosum, Carex globularis, Sphag- num girgensohnii , Sph. ?russowii , Sph. spp., Polytrichum com- MATERIAL. 2 ##, 1 $, Surgutskiy Refuge, Ob’ River Basin, mune, P . strictum, Pleurozium schreberi, ?Aulacomnium sp., Cli- Materikovyi Pasl Channel. Moss and litter in forest with Abies, macium dendroides etc., 30.IX.2003, leg. A.R.; 2 $$, Tobolsk Picea , Populus tremula , Betula, young Pinus sibirica , Pleurozium Field Research Station, in litter under Pinus sibirica , Tilia schreberi, Hylocomium splendens, Dicranum sp., Polytrichum com- cordata , Betula , Populus tremula , Picea obovata , Abies sibirica mune , Equisetum sylvaticum , Linnaea borealis , Oxalis acetosella, with Carex globularis, Stellaria sp., Maianthemum bifolium, Lathyrus Trientalis europaea etc., 07.VIII.2000, leg. A.R.; 2 $$, Ob’ River sp., Equisetum sylvaticum, Pyrola sp. etc., on slope, 06.VI.2004, Basin, Materikovyi Pasl Channel, 2 km S of cordon. Mosses and Linyphiid spiders of the West Siberian Plain 65 litter in forest with Pinus sibirica, Populus tremula, Picea obovata, DISTRIBUTION. Throughout the Holarctic. Pinus sylvestris, Sorbus sibirica, Hylocomium splendens, Pleurozium schreberi , Dicranum sp., Polytrichum commune , Lycopodium sp., Neriene montana (Clerck, 1757) Diphasiastrum sp., Diplazium sibiricum, Vaccinium vitis-idaea, V. myrtillus , Maianthemum bifolium , Trientalis europaea , Equisetum sylvaticum, Ledum palustre etc., 09.VIII.2000, leg. A.R. 1996 Neriene montana, Esyunin, Ekosistemy Srednego 1 #, 3 $$, Yuganskiy Reserve, Vuya-Yany River near Ay- Priob’ya, 1, p. 71. Vuya-Yany River mouth. Mosses and litter in forest at crest line: Pinus sibirica , P. sylvestris , Picea obovata , Abies sibirica, MATERIAL. 1 $, Yuganskiy Reserve, Nyogus’yakh River Vaccinium vitis-idaea , V. myrtillus , Linnaea borealis , Trientalis near Kogontchina-2 field research station. River bank: Carex europaea, Equisetum sylvaticum, Pleurozium schreberi, Hylocomi- sp. and Gramineae. 30.VIII.2000, leg. A.R. um splendens, Dicranum sp., Diphasiastrum sp., 18.VIII.2000, leg. DISTRIBUTION. Throughout the Holarctic. A.R.; 2 $$, Kol-Kotchen-Yagun River (confluent of Malyi Yugan River) E of cordon. Loamy river bank with Carex spp., Neriene radiata (Walckenaer, 1841) Gramineae, Equisetum spp., small Rosa sp. & Salix sp. etc., 16.IX.2001, leg. A.R.; 1 $, Kol-Kotchen-Yagun River Basin (confluent of Malyi Yugan River), lake near cordon. Over- 1996 Neriene marginata, Esyunin, Ekosistemy Srednego grown mesotrophic swamp with Pinus sylvestris, P. sibirica, Priob’ya, 1, p. 71. Betula, Picea obovata: open plots of Sphagnum girgensohnii, Sph. russowii, Sph. sp., Polytrichum commune with Carex globularis, MATERIAL. 1 $, Tyumen, VI.2000, leg. U. Equisetum sylvaticum, Ledum palustre etc., 19.IX.2001, leg. A.R.; DISTRIBUTION. All over the Holarctic. 1 $, Kol-Kotchen-Yagun River Basin (confluent of Malyi Yugan River), lake near cordon. Mosses and litter under Pinus Notioscopus sarcinatus (O. Pickard-Cambridge, sylvestris, P. sibirica, Picea obovata in forest near cordon: Ledum palustre, Chamaedaphne calyculata, Pleurozium schreberi, Hylo- 1872) comium splendens, Dicranum sp., Polytrichum commune, Vaccin- ium vitis-idaea, V. myrtillus, spots of Sphagnum girgensohnii and 1996 Notioscopus sarcinatus, Esyunin, Ekosistemy Srednego Sph . russowii et al., 25.IX.2001, leg. A.R.; 2 ##, 4 $$, right Priob’ya, 1, p. 73. riverside of Bolshoy Yugan River near Kamennyi cordon. Mosses and litter in pine forest with Cladonia spp., Vaccinium MATERIAL. 5 $$, Surgutskiy Refuge, Ob’ River Basin, vitis-idaea , Pleurozium schreberi , Dicranum ?polysetum, sparse Materikovyi Pasl Channel, 2 km S of cordon. Mosses and litter Ledum palustre etc., 18.VIII.2002, leg. A.R. on swamp with Sphagnum spp., Carex spp., Eriophorum sp., Ca. 30 ## & $$, Luginetsky, Abies, Picea, Betula forest, in Ledum , Betula ?rotundifolia , Aulacomnium sp., Hypnum sp., moss, 21–28.VIII.1998, leg. A.T.; 8 ##, 5 $$, Picea & Betula Polytrichum sp., sparse Pinus sylvestris, Betula sp., Populus tremu- forest, in moss, 22–28.VIII.1998, leg. A.T.; 2 ##, 1 $, swampy la etc., 09.VIII.2000, leg. A.R. spruce (Picea) forest, in moss, 25.VIII.1998, leg. A.T. 1 $, Yuganskiy Reserve, Bolshoy Yugan River, near cordon DISTRIBUTION. Europe, the Caucasus, the Urals, West, Kamennyi. Waterlogged forest with Picea, Abies, Pinus sylvestris, Middle and East Siberia, the southern part of Khabarovsk young Pinus sibirica, aspen, Betula, Ledum, Hylocomium splen- Prov., Kurile Islands. dens , Pleurozium schreberi , Sphagnum spp., Polytrichum spp., Carex spp., Gramineae, Linnaea borealis, Vaccinium vitis-idaea, V. myrtillus, 24.VIII.1999, leg. A.R.; 3 ##, 5 $$, Malyi Yugan Mughiphantes taczanowskii (O. Pickard-Cambridge, River Basin, 3–5 km SW of cordon at Kol-Kotchen-Yagun 1873) River, near lake. Mosses on swamp near N shore of lake: Sphagnum spp., Carex spp., Eriophorum sp., Chamaedaphne 1996 Lepthyphantes taczanowskii, Esyunin, Ekosistemy Sred- calyculata, Andromeda polifolia, Oxycoccus spp., Vaccinium ulig- nego Priob’ya, 1, p. 71. inosum et al., 17.IX.1999, leg. A.R.; 1 #, 3 $$, Malyi Yugan River Basin, 3–5 km SW of cordon at Kol-Kotchen-Yagun DISTRIBUTION. In Siberia, known from West Siberia River, near lake. Mosses on swamp near N shore of lake: eastward to Chukotka, Cisokhotia, Kamchatka, through the Sphagnum spp., Carex spp., Eriophorum sp., Chamaedaphne mountains of South Siberia via the Lake Baikal region east- calyculata, Andromeda polifolia, Oxycoccus spp., Vaccinium ulig- ward to Khabarovsk Prov., recorded also in Sakhalin. inosum et al., 18.IX.1999, leg. A.R.; 1 $, Malyi Yugan River Basin, Kol-Kotchen-Yagun River, 1 km S of cordon. Mosses and litter on small sedge-mossy swamp near river bank: Carex spp., Neriene emphana (Walckenaer, 1841) Sphagnum ?girgensohnii, Sph. ?riparium, Plagiomnium sp. et al., 24.IX.1999, leg. A.R.; 1 #, Nyogus’yakh River near Kogontchi- MATERIAL. 1 $, Tomsk Distr., Luginetsky, Abies, Picea & na-2 field research station. Rill banks from raised moss to Betula forest, in grass, 26.VIII.1998, leg. A.T. confluence with Nyogus’yakh River: Sph. ?angustifolium , Sph. 1 $, Tyumen, VI.2000., leg. U. magellanicum, Sphagnum ?russowii, Sph. girgensohnii, Sph. ripari- DISTRIBUTION. Throughout the Palaearctic, yet this is um , Carex globularis , C. acuta , C. sp., Filipendula ulmaria, the first formal record in West Siberia. Plagiomnium sp., Marchantia sp. etc., 04.IX.2000, leg. A.R.; 1 #, 3 $$, Nyogus’yakh River Basin near Petchpan’yakh River mouth. Mosses and litter on large swamp: Carex spp., Comarum palus- Neriene clathrata (Sundevall, 1830) tre, Equisetum sp., Nardosmia frigida, Eriophorum sp., Gramine- ae, Rumex sp., ?Aulacomnium sp., Plagiomnium sp., Ptilium crista- 1996 Neriene clathrata, Esyunin, Ekosistemy Srednego castrensis, Sphagnum sp., Chamaenerium angust, Sphagnum ?rus- Priob’ya, 1, p. 71. sowii, Sph. sp., Salix sp. etc., 15.IX.2000, leg. A.R.; 3 ##, 2 $$, Nyogus’yakh River Basin near Petchpan’yakh River mouth. MATERIAL. 1 $, Tobolsk Field Research Station, mosses Mosses and litter on large open swamp: Sphagnum ?angustifoli- and litter and in sweeping on small swamp with Carex spp., um , Sph. ?girgensohnii , Sph. ?russowii , Sph. sp., dwarf birch, Poaceae, Sphagnum girgensohnii, Sph. squarrosum, Sph. ?riparium, Oxycoccus spp., Gramineae, Carex spp., Comarum palustre, Sph. ?balticum, Sph. centrale etc., 10.VI.2004, leg. A.R. Equisetum sp., ?Aulacomnium sp., Plagiomnium sp., Ptilium crista- 1 $, Luginetsky, Picea & Betula forest, in moss, 21.VIII.1998, castrensis etc., 24.IX.2000, leg. A.R.; 1 #, 2 $$, Nyogus’yakh leg. A.T. River near Kogontchina-2 field research station. Clayish river 66 A.V. Tanasevitch bank: Carex spp., Equisetum sp., Gramineae, Mentha sp. etc., DISTRIBUTION. Widespread in Europe, in Siberia (shaking off sedges and Gramineae), 07.IX.2000, leg. A.R.; 1 $, known from the Urals eastward to Yenisey River, through Kol-Kotchen-Yagun River (confluent of Malyi Yugan River) the mountains of South Siberia eastward to the Lake Baikal NE of cordon. Swampy flood-plain birch forest: tussocks of region. Carex spp. & Gramineae, Comarum palustre, Filipendula ulmar- ia, Ranunculaceae, Sphagnum girgensohnii, Sph. spp., Climacium dendroides, Plagiomnium sp. etc., 23.IX.2001, leg. A.R.; 2 ##, 5 Oedothorax gibbosus (Blackwall, 1841) $$, Bolshoy Yugan River near Kamennyi cordon, swamped birch forest with Sphagnum spp., Carex sp., Gramineae, Ledum 1996 Oedothorax gibbosus, Esyunin, Ekosistemy Srednego palustre etc., 15.VIII.2002, leg. A.R.; 1 #, 2 $$, Ay-Magromsy Priob’ya, 1, p. 73. River Basin, Medvezhyi Ugol cordon, mosses and litter at rill bank: Carex rhynchophysa, Sphagnum spp., Plagiomnium sp. etc., MATERIAL. 1 #, 4 $$, Surgutskiy Refuge, Ob’ River Basin, 16.IX.2002, leg. A.R.; 3 $$, Ay-Magromsy River Basin, Med- right bank of Materikovyi Pasl Channel. Lake shore: Carex spp., vezhyi Ugol cordon, mosses and litter in tussocks of Carex sp. Comarum palustre, Lamiaceae, Climacium, Plagiomnium sp. etc., with Sphagnum squarrosum, Sph. centrale, Sph. girgensohnii, Sph. 10.VIII.2000, leg. A.R. ?russowii, Plagiomnium sp. etc., and also sweeping on Carex 1 $, Yuganskiy Reserve, Nyogus’yakh River near Kogontch- rhynchophysa among swampy birch forest at SW border of the ina-2 field research station. Swampy bank of old river chan- reserve, 21.IX.2002, leg. A.R.; 1 $, Ay-Magromsy River Basin, nel: Carex hummocks, Gramineae, Filipendula ulmaria , Co- Medvezhyi Ugol cordon, mosses and litter at the foot of slope marum palustre , Padus , Rosa sp., Salix sp., true mosses etc., near border of open swamp: Pinus sylvestris , P . sibirica , Picea 01.IX.2000, leg. A.R.; 1 $, Nyogus’yakh River Basin near obovata , Juniperus communis , Ledum palustre , Chamaedaphne Petchpan’yakh River mouth. Mosses and litter on large swamp: calyculata , Carex globularis , Pleurozium schreberi , Dicranum Carex spp., Comarum palustre, Equisetum sp., Eriophorum sp., polysetum, Polytrichum spp., Sphagnum spp., Equisetum sylvati- Gramineae, Rumex sp., ?Aulacomnium sp., Plagiomnium sp., cum , Eq . pratense , Vaccinium vitis-idaea etc., 25.IX.2002, leg. Ptilium crista-castrensis, Sphagnum sp., Chamaenerium angusti- A.R.; 2 ##, 1 $, Ay-Magromsy River Basin, 1 km N of folium, Betula and Salix sp. etc., 13.IX.2000, leg. A.R.; 1 #, 2 Medvezhyi Ugol cordon, mosses and litter on flood-plain of $$, Vuya-Yany River near Ay-Vuya-Yany River mouth. Flood- rill with Calamagrostis sp., Filipendula ulmaria , Spiraea sp., plain lake shore: young Betula and Populus tremula , Carex Equisetum sylvaticum , Plagiomnium sp., Sphagnum spp. etc., spp., Filipendula ulmaria, Gramineae, Sphagnum girgensohnii, (+5C?), 05.X.2002, leg. A.R. Aulacomnium sp., Climacium dendroides , Comarum palustre, 1 #, 1 $, Luginetsky, Picea, Abies & Betula forest, in moss, 23.VIII.2000, leg. A.R.; 1 $, Nyogus’yakh River near Kogontch- 26.VIII.1998, leg. A.T.; 3 ##, 1 $, Abies, Picea, Betula forest, in ina-2 field research station. Mosses and peat on flood-plain moss, 26.VIII.1998, leg. A.T. forest swamp with Filipendula ulmaria, Gramineae, Ribes ni- 6 ##, 4 $$, Nefteyugansk, mixed forests: Abies , Pinus grum , Sorbus sibirica , Rosa sp., Matteuccia struthiopteris , Co- sibirica, Picea, Betula with Equisetum, Vaccinium spp., Empetrum, marum palustre, Rubus saxatilis etc., 29.VIII.2000, leg. A.R.; 2 mosses, VIII.2001, leg. A.T. ##, Bolshoy Yugan River, 6–7 km below Sugmuten’yakh DISTRIBUTION. Northern Europe, in Siberia known River mouth. Bank of old channel: tussocks with Carex spp., from the Urals eastward to Yenisey River. Gramineae, small admixture of Filipendula ulmaria between sparse Salix sp. and Betula, 17.VIII.2001, leg. A.R.; 4 $$, Obscuriphantes obscurus (Blackwall, 1841) Bolshoy Yugan River, 6–7 km below Sugmuten’yakh River mouth. Mosses and litter between Carex spp., Gramineae, Filipendula ulmaria, Spiraea sp., with Plagiomnium sp., Climaci- 1996 Lepthyphantes obscurus, Esyunin, Ekosistemy Srednego um dendroides etc., on swamped forest road, 22.VIII.2001, leg. Priob’ya, 1, p. 70. A.R.; 1 $, Kol-Kotchen-Yagun River Basin (confluent of Malyi Yugan River), lake near cordon. Swampy birch-wilow sparse DISTRIBUTION. Europe, in Siberia from the Urals east- forest by SE shore of lake: tussocks of Carex spp. with a touch ward to Yenisey River. of Calamagrostis sp., Comarum palustre, Sphagnum squarrosum, Sph . centrale , Sph. spp. etc., as well as mosses and litter between those, 20.IX.2001, leg. A.R.; 1 #, Kol-Kotchen-Yagun Oedothorax agrestis (Blackwall, 1853) River Basin (confluent of Malyi Yugan River), lake near cordon. Mosses and litter between sparse Betula and Pinus 1996 Oedothorax agrestis, Esyunin, Ekosistemy Srednego spp. by N shore of lake: Carex spp., Calamagrostis sp., Eriopho- Priob’ya, 1, p. 73. rum sp., Salix spp., Comarum palustre, Sphagnum squarrosum, Sph. centrale, Sph. spp., Hypnum sp. etc., 22.IX.2001, leg. A.R.; 2 MATERIAL. 2 $$, Yuganskiy Reserve, Bolshoy Yugan River, $$, Ay-Magromsy River Basin, Medvezhyi Ugol cordon, moss- near cordon Kamennyi. River bank upper of cordon: sand, loam, es and litter at rill bank: Carex rhynchophysa, Sphagnum spp., Carex spp., Gramineae, Vicia sp., Asteraceae, Veronica ?longifolia Plagiomnium sp. etc., 16.IX.2002, leg. A.R.; 1 $, Ay-Magromsy et al., (on soil and grass), 24.VIII.1999, leg. A.R.; 4 ##, 2 $$, River Basin, 1 km N of Medvezhyi Ugol cordon, mosses and Nyogus’yakh River near Kogontchina-2 field research station. litter on flood-plain of rill with Calamagrostis sp., Filipendula River banks near rill mouths: Carex sp., Gramineae, Filipendula ulmaria , Spiraea sp., Equisetum sylvaticum , Plagiomnium sp., ulmaria, Salix sp., Padus etc., 03.IX.2000, leg. A.R.; 4 $$, Nyogus’yakh Sphagnum spp. etc., (+5C?), 05.X.2002, leg. A.R.; 1 $, Malyi River near Kogontchina-2 field research station. River bank: Yugan River, cordon below Lyarykni River mouth, open Carex sp. and Gramineae, 30.VIII.2000, leg. A.R.; 3 ##, 2 $$, swamp with tussocks of Carex spp. and Calamagrostis sp. with Kol-Kotchen-Yagun River (confluent of Malyi Yugan River) E of Comarum palustre, Salix sp., Sphagnum squarrosum, Sph. spp., cordon. Loamy river bank with Carex spp., Gramineae, Equise- ?Aulacomnium sp. etc., between sparse young Betula, tum spp., small Rosa sp. & Salix sp. etc., 16.IX.2001, leg. A.R.; 3 $$, 17.VIII.2003, leg. A.R.; 1 #, 6 $$, Malyi Yugan River, cordon Kol-Kotchen-Yagun River Basin (confluent of Malyi Yugan below Lyarykni River mouth, open swamp with tussocks of River), lake near cordon. Tussocks with Carex spp., Calamagrostis Carex spp. and Calamagrostis sp. with Comarum palustre, Salix sp., Comarum palustre between sparse Betula and Pinus sylvestris sp., Sphagnum squarrosum , Sph. spp., ?Aulacomnium sp. etc., at NW shore of lake: Sphagnum centrale, Sph. girgensohnii, Sph. between sparse young Betula, 22.VIII.2003, leg. A.R. ?aongstroemii, Sph. spp., Climacium dendroides, Plagiomnium sp., 1 #, 2 $$, Tobolsk Field Research Station, mosses and Salix sp., Spiraea sp. etc., 17.IX.2001, leg. A.R.; 1 #, 1 $, Vuya- litter and in sweeping on small swamp with Carex spp., Yany River near mouth, clayish river bank with Carex spp. and Poaceae, Sphagnum girgensohnii, Sph. squarrosum, Sph. ?ripari- Poaceae, 25.VIII.2003, leg. A.R. um, Sph. ?balticum, Sph. centrale etc., 20.IX.2003, leg. A.R.; 1 $, Linyphiid spiders of the West Siberian Plain 67 mosses and litter and in sweeping on small swamp with Oreonetides vaginatus (Thorell, 1872) Carex spp., Poaceae, Sphagnum girgensohnii, Sph. squarrosum, Sph. ?riparium , Sph. ?balticum , Sph . centrale etc., 21.IX.2003, 1996 Oreonetides vaginatus, Esyunin, Ekosistemy Srednego leg. A.R.; 1 $, mosses and litter among sparse Salix spp., Betula, Priob’ya, 1, p. 71. Pinus sylvestris with tussocks of Carex spp., Poaceae, Lythrum sp., Filipendula ulmaria, Climacium dendroides, isolated spots of Sphagnum squarrosum, Sph. sp. etc., on swamped flood-plain MATERIAL. 1 $, Yuganskiy Reserve, Vuya-Yany River near of left bank of Irtysh River, 29.IX.2003, leg. A.R.; 1 #, 3 $$, Ay-Vuya-Yany River mouth. Mosses and litter in forest at crest mosses and plant debris in swampy birch-willow sparse forest line: Pinus sibirica , P. sylvestris , Picea obovata , Abies sibirica, of flood-plain near left bank of Irtysh River: Carex spp., Vaccinium vitis-idaea , V. myrtillus , Linnaea borealis , Trientalis Calamagrostis sp., Sphagnum ?balticum, Sph. ?girgensohnii, Sph. europaea, Equisetum sylvaticum, Pleurozium schreberi, Hylocomi- squarrosum , Comarum palustre , Lythrum sp., Filipendula ul- um splendens, Dicranum sp., Diphasiastrum sp. 21.VIII.2000, leg. maria, Climacium dendroides etc., 09.VI.2004, leg. A.R.; 2 ##, A.R.; 1 #, Malyi Yugan River, near cordon below Lyarykni 2 $$, Tobolsk Field Research Station, mosses and litter and in River mouth, mosses and litter in forest near river bank: sweeping on small swamp with Carex spp., Poaceae, Sphagnum Pleurozium schreberi, Hylocomium splendens, Dicranum polyse- girgensohnii , Sph . squarrosum , Sph. ?riparium , Sph. ?balticum, tum, sparse Polytrichum commune, spots of Sphagnum girgensoh- Sph. centrale etc., 10.VI.2004, leg. A.R. nii , Linnaea borealis , Vaccinium vitis-idaea , Equisetum sylvati- 1 #, 4 $$, Noyabrsky, Salix bushes along brook, litter, cum , Maianthemum bifolium , Carex globularis , Rubus saxatilis, 15.VIII.2000, leg. A.T. Trientalis europaea, Poaceae, Oxalis acetosella etc., under Pinus DISTRIBUTION. Widespread in Europe, known from sibirica , P . sylvestris , Abies , Picea , Betula , Populus tremula, Turkey, in Siberia recorded in the Urals to Yenisey River, in 18.VIII.2003, leg. A.R. DISTRIBUTION. All over the Holarctic. the mountains of South Siberia registered from Sayan.

Oedothorax retusus (Westring, 1851) Oryphantes angulatus (O. Pickard-Cambridge, 1881) MATERIAL. 1 #, 1 $, Yuganskiy Reserve, Nyogus’yakh River near Kogontchina-2 field research station. River bank: 1996 Lepthyphantes angulatus, Esyunin, Ekosistemy Sred- Carex sp. and Gramineae. 30.VIII.2000, leg. A.R.; 1 #, Malyi nego Priob’ya, 1, p. 70. Yugan River, near cordon below Maalyakh River mouth, 1996 Lepthyphantes geminus, Esyunin, Ekosistemy Srednego mosses and litter in forest with Pinus sibirica, P. sylvestris, Picea, Priob’ya, 1, p. 70, revised by Esyunin, pers. comm. Betula , Populus tremula , Abies , Equisetum sylvaticum , Linnaea borealis , Vaccinium vitis-idaea , V . myrtillus , Carex globularis, MATERIAL. 1 $, near Ugut, Ugutka River Basin. Mosses Pleurozium schreberi, Hylocomium splendens, Polytrichum com- and litter at forest with Pinus sylvestris, Betula, Ledum palustre, mune, sparse spots of Sphagnum girgensohnii and Ledum palus- Vaccinium myrtillus , V. vitis-idaea , Dicranum sp., Pleurozium tre, 20.VIII.2003, leg. A.R. schreberi , Hylocomium splendens, underwood of Pinus sibirica 6 $$, Tobolsk Field Research Station, plant debris among etc., 11.X.1998, leg. A.R. Carex sp. and Poaceae on promontory at margin of inundated 2 $$, Yuganskiy Reserve, Nyogus’yakh River, cordon Bisarki- flood-plain of Varpak River, 06.VI.2004, leg. A.R.; 4 $$, Tobolsk na. Mosses and litter in flood-plane forest and at natural levee Field Research Station of Severtsov Institute, flood-plain swamp with Abies, Picea, Pinus sibirica, Betula, Oxalis, Equisetum sylvati- near left bank of Irtysh River: Carex spp., Comarum palustre, cum, Eq. pratense, Maianthemum, Trientalis, Linnaea, Hylocomium Salix sp., Climacium dendroides, small true mosses, Lemna sp. splendens, Pleurozium schreberi, placely Sphagnum sp. (girgensoh- etc., 09.VI.2004, leg. A.R.; 1 $, Tobolsk Field Research Station, nii or russowii) etc., 24.X.1998, leg. A.R.; 3 $$, near Vuya-Yany willow leaf litter at margin of inundated flood-plain of Varpak River mouth. Moss and litter in flood-plane forest with Abies, River, 05.VI.2004, leg. A.R. Picea, Betula, Pinus sibirica, Sorbus, Vaccinium vitis-idaea, Equise- DISTRIBUTION. Widespread in Europe, throughout tum sylvaticum, Eq . pratense, Hylocomium splendens, Pleurozium Siberia; registered from China. schreberi , Polytrichum commune , Ptilium , Climacium , Maianthe- mum, Trientalis, Veratrum etc., 15.VIII.1998, leg. A.R.; 1 $, near Oreoneta uralensis Saaristo et Marusik, 2004 Vuya-Yany River mouth. Mosses and litter under Pinus sibirica, Picea, Abies, Betula with Maianthemum, Trientalis, Vaccinium vitis- idaea , Pleurozium , Climacium etc., 12.VIII.1998, leg. A.R.; 1 $, 1996 Hilaira frigida, Esyunin, Ekosistemy Srednego Priob’ya, near Vuya-Yany River mouth. Mosses and litter in flood-plane 1, p. 70. forest with Pinus sibirica , Abies , Picea , Betula, Rosa , Vaccinium vitis-idaea , Maianthemum , Trientalis , Pleurozium schreberi , Hylo- MATERIAL. 2 ##, 3 $$, Yuganskiy Reserve, Malyi Yu- comium splendens , Equisetum sylvaticum, spots of Sphagnum gan River Basin, Kol-Kotchen-Yagun River, 3-4 km S of ?girgensohnii and Sph. ?russowii etc., 09.VIII.1998, leg. A.R.; 1 $, cordon. Moss and litter at river bank: Padus, Salix sp., Spiraea Nyogus’yakh River Basin, forest road, 2.5 km ENE of cordon spp., Filipendula ulmaria, Ribes nigrum, Gallium sp., Carex spp., Bisarkina. Swampy sources of parched rill: Sphagnum spp., Carex Gramineae, Equisetum spp., ?Aulacomnium sp., Plagiomnium spp., graminoids, Equisetum spp. 28.X.1998, leg. A.R.; 1 $, sp., Climacium dendroides et al., 13.IX.1999, leg. A.R.; 2 $$, Nyogus’yakh River, cordon Bisarkina. Parching rill near cordon: Vuya-Yany River near Ay-Vuya-Yany River mouth. Flood- mosses and litter in rill-bed and by banks (Carex spp., Equisetum plain depression: Filipendula ulmaria , Carex sp., Gramineae, sylvaticum , Sphagnum ?riparium , Sph. ?girgensohnii , Polytrichum Spiraea sp., Ribes nigrum, Comarum palustre, Sphagnum squar- commune , Filipendula ulmaria, Gramineae, Veratrum , Linnaea, rosum, Sph . girgensohnii, Climacium dendroides, Aulacomnium Maianthemum , Trientalis , Tomenthypnum sp., Plagiomnium sp. sp., Plagiomnium sp. etc., 24.VIII.2000, leg. A.R.; 1 #, 1 $, etc.), 31.X.1998, leg. A.R.; 1 #, 2 $$, Malyi Yugan River Basin, Vuya-Yany River near Ay-Vuya-Yany River mouth. Mosses 3–5 km SW of cordon at Kol-Kotchen-Yagun River, near lake. and litter in forest at crest line: Pinus sibirica , P . sylvestris, Moss and litter in pine forest with Betula, Pinus sibirica, Ledum, Picea obovata, Abies sibirica, Vaccinium vitis-idaea, V. myrtillus, Chamaedaphne calyculata, Vaccinium vitis-idaea, Sphagnum spp., Linnaea borealis , Trientalis europaea , Equisetum sylvaticum, Pleurozium schreberi, Dicranum sp., Polytrichum commune (here Pleurozium schreberi , Hylocomium splendens , Dicranum sp., and there) et al., 14.IX.1999, leg. A.R.; 1 #, Malyi Yugan River Diphasiastrum sp. 21.VIII.2000, leg. A.R. Basin, 3–5 km SW of cordon at Kol-Kotchen-Yagun River, near DISTRIBUTION. Known from the Urals and Altai Mts. lake. Moss and litter under Pinus sibirica , Picea , Betula, Pinus This is the first record in West Siberia. sylvestris with Vaccinium myrtillus , V. vitis-idaea , Lycopodium, 68 A.V. Tanasevitch

Equisetum sylvaticum , Rosa sp., Pleurozium schreberi on gentle flood-plain, 21.VIII.2002, leg. A.R.; 1 $, Ay-Magromsy River slope, 20.IX.1999, leg. A.R.; 4 $$, Vuya-Yany River near Ay-Vuya- Basin, Medvezhyi Ugol cordon, mosses and litter at southern Yany River mouth. Flood-plain depression: Filipendula ulmaria, border of sedge-mossy swamp: Carex rostrata, C. spp., Comarum Carex sp., Gramineae, Spiraea sp., Ribes nigrum, Comarum palus- palustre, Equisetum spp., Sphagnum girgensohnii, Sph. spp., Plagi- tre, Sphagnum squarrosum, Sph. girgensohnii, Climacium dendroi- omnium sp., Aulacomnium sp., Calamagrostis sp., Menyanthes des, Aulacomnium sp., Plagiomnium sp. etc., 24.VIII.2000, leg. A.R.; trifoliata etc., among sparse young birches, 21.IX.2002, leg. A.R.; 1 $, Vuya-Yany River near Ay-Vuya-Yany River mouth. Swamped 5 $$, Ay-Magromsy River Basin, Medvezhyi Ugol cordon, flood-plain of left river bank: Carex spp., Comarum palustre, mosses and litter near rill: Plagiomnium sp., Sphagnum squarro- Filipendula ulmaria, Spiraea sp., Ribes nigrum, Sphagnum squarro- sum , Sph . centrale , Sph . girgensohnii , Sph . warnstorfii , Calama- sum , Sph. ?girgensohnii , Plagiomnium sp., Aulacomnium sp. etc., grostis sp., Carex sp. among sparse Salix sp. and birches, (+3C?), 27.VIII.2000, leg. A.R.; 1 $, Nyogus’yakh River near Kogontchina- 28.IX.2002, leg. A.R.; 1 #, Ay-Magromsy River Basin, Medvezhyi 2 field research station. Rill banks from raised moss to conflu- Ugol cordon, mosses and litter among Abies, Picea and Betula ence with Nyogus’yakh River: Sph. ?angustifolium, Sph. magellani- on gentle slope near SW edge of sedge-mossy swamp: Ledum cum, Sphagnum ?russowii, Sph. girgensohnii, Sph. riparium, Carex palustre , Vaccinium vitis-idaea , Hylocomium splendens , Pleuro- globularis, C . acuta, C. sp., Filipendula ulmaria, Plagiomnium sp., zium schreberi, Polytrichum commune, Sphagnum ?russowii, Sph. Marchantia sp. etc., 04.IX.2000, leg. A.R.; 1 #, 1 $, Vuya-Yany spp. etc., (+3C?), 28.IX.2002, leg. A.R.; 1 #, 1 $, Ay-Magromsy River near Ay-Vuya-Yany River mouth. Mosses and litter in River Basin, 3 km N of Medvezhyi Ugol cordon, mosses and forest at crest line: Pinus sibirica, P. sylvestris, Picea obovata, Abies litter in hummocky with Carex sp., Filipendula ulmaria, Comar- sibirica, Vaccinium vitis-idaea, V. myrtillus, Linnaea borealis, Trien- um palustre, Plagiomnium sp., Climacium dendroides, Sphagnum talis europaea, Equisetum sylvaticum, Pleurozium schreberi, Hylo- russowii, Sph. spp. etc., on flood-plain of rill, 03.X.2002, leg. A.R.; comium splendens, Dicranum sp., Diphasiastrum sp., 21.VIII.2000, 1 #, 1 $, Malyi Yugan River, near cordon below Maalyakh leg. A.R.; 3 ##, 2 $$, Vuya-Yany River near Ay-Vuya-Yany River mouth, mosses and litter in forest with Pinus sibirica, P. River mouth. Mosses and litter in flood-plain forest under sylvestris, Picea, Betula, Populus tremula, Abies, Equisetum sylvat- Betula, Abies sibirica, Picea obovata with Oxalis acetosella, Equise- icum, Linnaea borealis, Vaccinium vitis-idaea, V. myrtillus, Carex tum sylvaticum , Calamagrostis sp., Linnaea borealis , Vaccinium globularis, Pleurozium schreberi, Hylocomium splendens, Polytri- vitis-idaea , Maianthemum bifolium , Trientalis europaea , Pleuro- chum commune, sparse spots of Sphagnum girgensohnii and zium schreberi , Climacium dendroides , Dicranum sp. etc., Ledum palustre, 20.VIII.2003, leg. A.R.; 1 #, 2 $$, Malyi Yugan 19.VIII.2000, leg. A.R.; 4 ##, Nyogus’yakh River near Kogontch- River, near cordon below Lyarykni River mouth, mosses and ina-2 field research station. Mosses and peat on flood-plain litter in forest near river bank: Pleurozium schreberi, Hylocomi- forest swamp with Filipendula ulmaria, Gramineae, Ribes nigrum, um splendens , Dicranum polysetum, sparse Polytrichum com- Sorbus sibirica, Rosa sp., Matteuccia struthiopteris, Comarum palus- mune, spots of Sphagnum girgensohnii, Linnaea borealis, Vaccin- tre, Rubus saxatilis etc., 29.VIII.2000, leg. A.R.; 1 $, Nyogus’yakh ium vitis-idaea , Equisetum sylvaticum , Majanthemum bifolium, River near Kogontchina-2 field research station. Mosses and Carex globularis , Rubus saxatilis , Trientalis europaea, Poaceae, litter in swampy forest under Betula, Pinus sylvestris , Picea Oxalis acetosella etc., under Pinus sibirica , P . sylvestris , Abies, obovata with Sphagnum girgensohnii, Sph. spp., Polytrichum com- Picea, Betula, Populus tremula, 18.VIII.2003, leg. A.R.; 1 $, Yugan- mune , Pleurozium schreberi , Hylocomium splendens , Equisetum skiy Reserve (buffer zone), flood-plain of a rill (confluent of sylvaticum, Linnaea borealis, Vaccinium vitis-idaea etc., 02.IX.2000, Malyi Yugan River) near Achimovy-2 village: tussocks of Carex leg. A.R.; 1 $, Nyogus’yakh River near Kogontchina-2 field spp. and Poaceae, depressions with Carex rostrata , Filipendula research station. Mosses and peat under Carex ?globularis near ulmaria , Comarum palustre , Urtica dioica , Sphagnum centrale, small forest swamp on island in the middle of large high moor, Climacium dendroides, Plagiomnium sp., Rubus saxatilis, Salix sp., 02.IX.2000, leg. A.R.; 2 $$, Nyogus’yakh River near Petchpan’yakh sparse Betula and Picea, 24.VIII.2003, leg. A.R. River mouth. Mosses and litter under Abies sibirica , Betula, 1 $, Tobolsk Field Research Station, mosses and litter and Pinus sibirica, Sorbus sibirica with Hylocomium splendens, Pleuro- in sweeping on small swamp with Carex spp., Poaceae, Sphag- zium schreberi, Gramineae, Equisetum pratense, Eq . sylvaticum, num girgensohnii , Sph . squarrosum , Sph. ?riparium , Sph. ?balti- Majanthemum bifolium , Trientalis europaea , Linnaea borealis, cum, Sph. centrale etc., 21.IX.2003, leg. A.R.; 1 $, Tobolsk Field Vaccinium vitis-idaea etc., in flood-plain forest on natural levee, Research Station, mosses and litter under Pinus sibirica, Abies, 09.IX.2000, leg. A.R.; 2 $$, near S border of buffer area of, Betula in swamped sparse forest with Sphagnum girgensohnii, Koimlor (Krimlor) Lake. Litter under Picea obovata and Pinus Sph. ?russowii, Sph . centrale, Sph . squarrosum, Linnaea borealis, sibirica with Lycopodium sp., Linnaea borealis, ferns, Gramineae, Oxalis acetosella, Equisetum sylvaticum, Carex globularis, C. sp., Trientalis europaea, sparse Ledum palustre etc., in moist forest Pleurozium schreberi etc., 21.IX.2003, leg. A.R. near lake shore, 02.IX.2001, leg. A.R.; 1 $, near S border of Ca. 30 ## & $$, Luginetsky, Abies, Picea, Betula forest, in buffer area of Yuganskiy Reserve, rill between Kolynlor Lake moss, 21–28.VIII.1998, leg. A.T.; 4 ##, 7 $$, Picea, Abies & and Koimlor (Krimlor) Lake. Mosses and litter under Pinus Betula forest, in moss, 26.VIII.1998, leg. A.T. sibirica in forest at the rill bank: Lycopodium sp., ferns, Linnaea 1 $, Samotlor, bank of Vakh River, Salix bushes, litter, Aug. borealis , Vaccinium vitis-idaea , Orthilia secunda , Pleurozium 1999, leg. A.T.; 6 $$, Betula forest, glade, in grass, Aug. 1999, schreberi, Hylocomium splendens, Dicranum sp., Polytrichum sp., leg. A.T. Calamagrostis sp., sparse Ledum palustre etc., 04.IX.2001, leg. 3 $$, Noyabrsky, Salix bushes along brook, litter, A.R.; 2 ##, 5 $$, Kol-Kotchen-Yagun River Basin (confluent 15.VIII.2000, leg. A.T. of Malyi Yugan River), lake near cordon. Mosses and litter in DISTRIBUTION. Europe, the southern part of the Urals, Pinus -Ledum-Sphagnum sparse forest with sparse Betula, in the northeastern part of the Russian Plain (Bolshezemel- Chamaedaphne calyculata, Oxycoccus sp., Rubus chamaemorus, skaya Tundra and the adjacent forested tundra) replaced by Eriophorum sp., Sphagnum magellanicum, Sph. spp., 18.IX.2001, O. geminus (Tanasevitch, 1982). In Siberia known only leg. A.R.; 3 $$, Kol-Kotchen-Yagun River Basin (confluent of from the West Siberian Plain. This West Siberian popula- Malyi Yugan River), lake near cordon. Mosses and litter under Pinus sibirica , P . sylvestris a nd Picea obovata with Sphagnum tion of O. angulatus is surrounded by O. geminus, being a girgensohnii, Vaccinium vitis-idaea, V. myrtillus, Hylocomium splen- Siberian enclave. dens , Pleurozium schreberi , Dicranum sp., Ledum palustre, Chamaedaphne calyculata et al., in forest near NE shore of lake, 01.X.2001, leg. A.R.; 2 ##, 3 $$, right riverside of Panamomops dybowskii (O. Pickard-Cambridge, Bolshoy Yugan River near cordon Kamennyi. Mosses and litter 1873) in forest with Picea obovata, Abies sibirica, Pinus sibirica, Carex spp. and Gramineae with Sphagnum girgensohnii , Sph. spp., 1996 Panamomops dybowskii, Esyunin, Ekosistemy Srednego Polytrichum commune etc., in waterlogged birch forest on Priob’ya, 1, p. 73. Linyphiid spiders of the West Siberian Plain 69

MATERIAL. 6 $$, Yuganskiy Reserve, near Vuya-Yany the Lake Baikal region eastward to Khabarovsk Prov. This is River mouth. Moss and litter in flood-plane forest with Abies, the first record in West Siberia. Picea, Betula, Pinus sibirica, Sorbus, Vaccinium vitis-idaea, Equise- tum sylvaticum, Eq. pratense, Hylocomium splendens, Pleurozium schreberi, Polytrichum commune, Ptilium, Climacium, Maianthe- Pelecopsis mengei (Simon, 1884) mum, Trientalis, Veratrum etc., 15.VIII.1998, leg. A.R.; 1 #, 4 $$, Malyi Yugan River, 3 km up-stream off Vuya-Yany River 1996 Pelecopsis mengei, Esyunin, Ekosistemy Srednego mouth. Litter in flood-plane birch forest with Maianthemum, Priob’ya, 1, p. 73. young Picea and Abies, Rosa sp. etc., 14.VIII.1998, leg. A.R.; 1 $, Nyogus’yakh River, cordon Bisarkina. Mosses and litter at MATERIAL. 3 $$, Yuganskiy Reserve, Malyi Yugan River, 3 forest lake shore: Carex spp., Filipendula ulmaria, Gramineae, km up-stream off Vuya-Yany River mouth. Litter in flood- Equisetim spp., ferns, Plagiomnium sp., Climacium dendroides, plane birch forest with Maianthemum, young Picea and Abies, Sphagnum squarrosum , Tomenthypnum sp. etc., 26.X.1998, leg. Rosa sp. etc., 14.VIII.1998, leg. A.R.; 1 $, near Vuya-Yany River A.R.; 2 ##, 1 $, Malyi Yugan River Basin, hut at Kol-Kotchen- mouth. Mosses and litter in flood-plane forest with Pinus Yagun River, 12 km SW of cordon. Moss and litter under Abies sibirica, Abies, Picea, Betula, Rosa, Vaccinium vitis-idaea, Maian- with Equisetum pratense, Hylocomium splendens, Oxalis aceto- themum, Trientalis, Pleurozium schreberi, Hylocomium splendens, sella et al., on natural levee, 02.IX.1999, leg. A.R.; 1 $, Malyi Equisetum sylvaticum, spots of Sphagnum ?girgensohnii and Sph. Yugan River Basin, 3–5 km SW of cordon at Kol-Kotchen- ?russowii etc., 09.VIII.1998, leg. A.R.; 1 $, Nyogus’yakh River, Yagun River, near lake. Moss and litter under Pinus sibirica, cordon Bisarkina. River bank: mosses and litter under Salix Picea, Betula, Pinus sylvestris with Vaccinium myrtillus, V. vitis- spp., Padus, Matteuccia struthiopteris, Filipendula ulmaria, Urtica idaea, Lycopodium, Equisetum sylvaticum, Rosa sp., Pleurozium dioica etc., 29.X.1998, leg. A.R.; 1 #, 3 $$, Malyi Yugan River schreberi on gentle slope, 20.IX.1999, leg. A.R.; 3 ##, 4 $$, Basin, 3–5 km SW of cordon at Kol-Kotchen-Yagun River, Vuya-Yany River near Ay-Vuya-Yany River mouth. Mosses and near lake. Moss and litter at lake shore (on cape near hut): litter in forest at crest line: Pinus sibirica , P . sylvestris , Picea Padus , Salix, young Populus tremula, sedge and graminoid obovata , Abies sibirica , Vaccinium vitis-idaea , V. myrtillus , Lin- tussocks, Comarum palustre, Equisetum spp., ?Aulacomnium sp. naea borealis, Trientalis europaea, Equisetum sylvaticum, Pleuro- et al., 11.IX.1999, leg. A.R.; 1 $, Malyi Yugan River Basin, 3-5 zium schreberi, Hylocomium splendens, Dicranum sp., Diphasias- km SW of cordon at Kol-Kotchen-Yagun River, near lake. trum sp., 21.VIII.2000, leg. A.R.; 1 $, Vuya-Yany River near Ay- Litter under birch and aspen in birch forest with low hum- Vuya-Yany River mouth. Mosses and litter in flood-plain forest mocky near SE shore of lake: Betula, sparse Populus tremula, under Betula, Abies sibirica, Picea obovata with Oxalis acetosella, Salix sp., Spiraea sp., Carex spp., Gramineae, Comarum palustre, Equisetum sylvaticum, Calamagrostis sp., Linnaea borealis, Vac- sparse Equisetum sylvaticum et al., 15.IX.1999, leg. A.R.; 1 $, cinium vitis-idaea , Majanthemum bifolium , Trientalis europaea, Malyi Yugan River Basin, 3–5 km SW of cordon at Kol- Pleurozium schreberi, Climacium dendroides, Dicranum sp. etc., Kotchen-Yagun River, near lake. Litter between tussocks and 19.VIII.2000, leg. A.R.; 1 #, Nyogus’yakh River near sedge-graminoid tussocks in birch forest with low hummocky Petchpan’yakh River mouth. Mosses and litter under Abies near SE shore of lake: Betula, sparse Populus tremula, Salix sp., sibirica, Betula, Pinus sibirica, Sorbus sibirica with Hylocomium Spiraea sp., Carex spp., Gramineae, Comarum palustre, sparse splendens, Pleurozium schreberi, Gramineae, Equisetum pratense, Equisetum sylvaticum et al., 15.IX.1999, leg. A.R.; 2 ##, 5 $$, Eq. sylvaticum, Majanthemum bifolium, Trientalis europaea, Lin- Malyi Yugan River Basin, 3–5 km SW of cordon at Kol- naea borealis, Vaccinium vitis-idaea etc., in flood-plain forest on Kotchen-Yagun River, near lake. Moss and litter under Pinus natural levee, 09.IX.2000, leg. A.R.; 1 #, right riverside of sibirica, Picea, Betula, Pinus sylvestris with Vaccinium myrtillus, V. Bolshoy Yugan River near cordon Kamennyi. Mosses and litter vitis-idaea , Lycopodium , Equisetum sylvaticum , Rosa sp., Pleuro- in forest with Picea obovata, Abies sibirica, Pinus sibirica, Carex zium schreberi on gentle slope, 20.IX.1999, leg. A.R.; 1 $, Vuya- spp. and Gramineae with Sphagnum girgensohnii , Sph. spp., Yany River near Ay-Vuya-Yany River mouth. Swamped flood- Polytrichum commune etc., in waterlogged birch forest on plain of left river bank: Carex spp., Comarum palustre, Filipen- flood-plain, 21.VIII.2002, leg. A.R. dula ulmaria , Spiraea sp., Ribes nigrum , Sphagnum squarrosum, 1 #, 2 $$, Tyumen, VI.2000, leg. U. Sph. ?girgensohnii , Plagiomnium sp., Aulacomnium sp. etc., DISTRIBUTION. Siberia: from the Urals eastward to 27.VIII.2000, leg. A.R.; 1 $, Nyogus’yakh River near Kogontchina- Yenisey River; through the mountains of South Siberia east- 2 field research station. Rill banks from raised moss to conflu- ward to the Lake Baikal region. ence with Nyogus’yakh River: Sph. ?angustifolium, Sph. magellani- cum, Sphagnum ?russowii, Sph. girgensohnii, Sph. riparium, Carex globularis, C . acuta, C. sp., Filipendula ulmaria, Plagiomnium sp., Paraeboria jeniseica (Eskov, 1981) Marchantia sp. etc., 04.IX.2000, leg. A.R.; 1 $, Vuya-Yany River near Ay-Vuya-Yany River mouth. Flood-plain lake shore: Carex MATERIAL. 1 #, Yuganskiy Reserve, Nyogus’yakh River, spp., Filipendula ulmaria, Gramineae, Aulacomnium sp., Climaci- cordon Bisarkina. Parching rill near cordon: mosses and litter in um dendroides, Comarum palustre, 18.VIII.2000, leg. A.R.; 2 $$, rill-bed and by banks (Carex spp., Equisetum sylvaticum, Sphag- Vuya-Yany River near Ay-Vuya-Yany River mouth. Flood-plain num ?riparium, Sph. ?girgensohnii, Polytrichum commune, Filipen- lake shore: young Betula and Populus tremula , Carex spp., dula ulmaria, Gramineae, Veratrum, Linnaea, Maianthemum, Tri- Filipendula ulmaria, Gramineae, Sphagnum girgensohnii, Aulacom- entalis, Tomenthypnum sp., Plagiomnium sp. etc.), 31.X.1998, leg. nium sp., Climacium dendroides, Comarum palustre, 23.VIII.2000, A.R.; 3 $$, Kol-Kotchen-Yagun River Basin (confluent of Malyi leg. A.R.; 4 $$, Nyogus’yakh River Basin near Petchpan’yakh Yugan River), lake near cordon. Swampy birch-wilow sparse River mouth. Mosses and litter in swampy flood-plain forest, forest by SE shore of lake: tussocks of Carex spp. with a touch of between Betula, Abies sibirica , Picea obovata , Salix sp., Pinus Calamagrostis sp., Comarum palustre, Sphagnum squarrosum, Sph. sibirica etc.: tussocks of Carex spp., Filipendula ulmaria, Gramine- centrale, Sph. spp. etc., as well as mosses and litter between those, ae, Comarum palustre , Menyanthes trifoliata , Plagiomnium sp., 20.IX.2001, leg. A.R.; 3 ##, 1 $, Kol-Kotchen-Yagun River Basin Aulacomnium sp., Climacium dendroides etc., 12.IX.2000, leg. A.R.; (confluent of Malyi Yugan River), lake near cordon. Mosses and 2 $$, Kol-Kotchen-Yagun River Basin (confluent of Malyi litter by NE shore of lake: spp., tussocks of Carex spp., Calama- Yugan River), lake near cordon. Tussocks with Carex spp., grostis sp., Sphagnum squarrosum, Sph. centrale, Sph. ?girgensohnii, Calamagrostis sp., Comarum palustre between sparse Betula and Sph . russowii between sparse birch wood with isolated Pinus Pinus sylvestris at NW shore of lake: Sphagnum centrale , Sph. sylvestris, 30.IX.2001, leg. A.R. girgensohnii, Sph. ?aongstroemii, Sph. spp., Climacium dendroides, DISTRIBUTION. Siberia: from West Siberia via the Plagiomnium sp., Salix sp., Spiraea sp. etc., 17.IX.2001, leg. A.R.; 1 Yenisey River basin eastward to East Siberia, Cisokhotia #, Kol-Kotchen-Yagun River Basin (confluent of Malyi Yugan and Sakhalin; through the mountains of South Siberia via River), lake near cordon. Swampy birch-wilow sparse forest by 70 A.V. Tanasevitch

SE shore of lake: tussocks of Carex spp. with a touch of num girgensohnii , Sph . squarrosum , Sph. ?riparium , Sph. ?balti- Calamagrostis sp., Comarum palustre , Sphagnum squarrosum, cum, Sph. centrale etc., 10.VI.2004, leg. A.R. Sph. centrale, Sph. spp. etc., as well as mosses and litter between 1 $, Luginetsky, swampy spruce (Picea) forest, in moss, those, 20.IX.2001, leg. A.R.; 3 $$, Kol-Kotchen-Yagun River 25.VIII.1998, leg. A.T.; 1 $ , Picea & Betula forest, in moss, (confluent of Malyi Yugan River) NE of cordon. River bank 21.VIII.1998, leg. A.T. with Carex spp., Gramineae, Filipendula ulmaria, Urtica dioica, 2 $$, Tyumen, VI.2000, leg. U. Spiraea sp. etc., 23.IX.2001, leg. A.R. DISTRIBUTION. Throughout the Holarctic. This is the 1 #, Tyumen, VI.2000, leg. U. first record in West Siberia. DISTRIBUTION. Throughout the Palaearctic. Porrhomma pallidum Jackson, 1913 Pelecopsis parallela (Wider, 1834) MATERIAL. 1 $, Surgutskiy Refuge, Ob’ River Basin, Ma- 1996 Pelecopsis parallela, Esyunin, Ekosistemy Srednego terikovyi Pasl Channel. Mosses and litter under Pinus sibirica Priob’ya, 1, p. 73. and Picea obovata with Hylocomium splendens , Pleurozium schreberi , Linnaea , Vaccinium vitis-idaea , V. myrtillus , Polytri- DISTRIBUTION. Throughout the Palaearctic except for chum commune , Majanthemum bifolium , Trientalis europaea, the southern part of the Far East. Lycopodium sp., Diphasiastrum sp., Equisetum sylvaticum, E. ?pratense etc., 12.VIII.2000, leg. A.R. 2 $$, Yuganskiy Reserve, Vuya-Yany River near Ay-Vuya- Perregrinus deformis (Tanasevitch, 1982) Yany River mouth. Mosses and litter on swamp: Pinus sylvestris, Ledum palustre, Andromeda polifolia, Chamaedaphne calycula- MATERIAL. 2 $$, Yuganskiy Reserve, Nyogus’yakh River, ta, Oxycoccus spp., Sphagnum magellanicum, Sph. ?angustifolium, cordon Bisarkina. Mosses and litter at forest lake shore: Carex Eriophorum sp. etc., 27.VIII.2000, leg. A.R. spp., Filipendula ulmaria, Gramineae, Equisetum spp., ferns, DISTRIBUTION. Throughout the Palaearctic. This is Plagiomnium sp., Climacium dendroides, Sphagnum squarrosum, the first record in West Siberia. Tomenthypnum sp. etc., 26.X.1998, leg. A.R.; 1 $, Ay-Magromsy River Basin, Medvezhyi Ugol cordon, mosses and litter at rill bank and on flood-plain of rill: Calamagrostis sp., Ribes spp., Porrhomma pygmaeum (Blackwall, 1834) Rosa sp., Filipendula ulmaria, Matteuccia struthiopteris, Equise- tum sylvaticum , Sphagnum squarrosum , Sph . girgensohnii , Sph. 1996 Porrhomma pygmaeum, Esyunin, Ekosistemy Srednego spp., Plagiomnium sp. etc., 20.IX.2002, leg. A.R. Priob’ya, 1, p. 71. DISTRIBUTION. From the Urals through entire Sibe- ria, in the Nearctic from the Yukon eastward to Quebec. MATERIAL. 5 ##, Surgutskiy Refuge, Ob’ River Basin, right bank of Materikovyi Pasl Channel. Lake shore: Carex spp., Pityohyphantes phrygianus (C.L. Koch, 1836) Comarum palustre, Lamiaceae, Climacium, Plagiomnium sp. etc., 10.VIII.2000, leg. A.R. 1 $, near Ugut, Ugutka River Basin. Mosses and litter at 1996 Pityohyphantes phrygianus, Esyunin, Eko- forest with Pinus sylvestris, Betula, Ledum palustre , Vaccinium sistemy Srednego Priob’ya, 1, p. 71. myrtillus , V. vitis-idaeae , Dicranum sp., Pleurozium schreberi, Hylocomium splendens, underwood of Pinus sibirica etc., 11.X.1998, DISTRIBUTION. Throughout the Palaearctic. leg. A.R. 2 ##, 6 $$, Yuganskiy Reserve, near Vuya-Yany River mouth. Moss and litter at hummocks at bank of old channel Pocadicnemis pumila (Blackwall, 1841) with Carex spp., Comarum palustre, Filipendula ulmaria, Gramine- ae, Plagiomnium sp. etc., 12.VIII.1998, leg. A.R.; 3 ##, 4 $$, MATERIAL. 2 $$, Yuganskiy Reserve, Nyogus’yakh River, Nyogus’yakh River, cordon Bisarkina. Tussocks with Carex spp., cordon Bisarkina. Moss and litter on swamp amid flood plain Gramineae, Filipendula ulmaria , Plagiomnium sp., Tomenthyp- forest near foot of slope: Menyanthes trifoliata, Equisetum spp., num sp. etc., at flood-plain lake shore, 30.X.1998, leg. A.R.; 2 Sphagnum squarrosum (sparse), Sph. ?centrale , Sph. spp., Nar- ##, 3 $$, Bolshoy Yugan River, near cordon Kamennyi. dosmia frigida , Carex spp., Gramineae, Salix sp., Comarum Waterlogged forest road (winter road): Carex spp., Eriophorum palustre, Filipendula ulmaria, ?Tomenthypnum sp., Plagiomnium sp., Gramineae, Sphagnum spp., Polytrichum spp. etc., 22.VIII.1999, sp. etc., 27.X.1998, leg. A.R.; 1 $, Nyogus’yakh River near leg. A.R.; 4 $$, Bolshoy Yugan River, near cordon Kamennyi. Kogontchina-2 field research station. Mosses and litter on Margin of small open forest swamp: Gramineae, Carex spp., swamp with Pinus sylvestris, Betula, Ledum palustre, Andromeda Sphagnum spp., Polytrichum commune, Comarum palustre et al., polifolia, Chamaedaphne calyculata, Vaccinium uliginosum, Erio- 24.VIII.1999, leg. A.R.; 2 $$, Malyi Yugan River Basin, 3–5 km phorum sp., Oxycoccus palustris, Sphagnum fuscum, Sph. magel- SW of cordon at Kol-Kotchen-Yagun River, near lake. Moss lanicum, Sph. ?angustifolium, Sph. spp., Rubus chamaemorus etc., and litter under Pinus sibirica, P . sylvestris, young Abies with 31.VIII.2000, leg. A.R.; 1 $, near S border of buffer area of Hylocomium splendens, Pleurozium schreberi, Dicranum sp., Vac- Yuganskiy Reserve, Kolynlor Lake. Lake shore: Carex spp., cinium myrtillus, V. vitis-idaea, Linnaea borealis, sparse Ledum Gramineae, Sphagnum spp. etc., 29.VIII.2001, leg. A.R.; 3 $$, on low knoll, 09.IX.1999, leg. A.R.; 3 $$, Malyi Yugan River near S border of buffer area of Yuganskiy Reserve, Kolynlor Basin, 3–5 km SW of cordon at Kol-Kotchen-Yagun River, Lake. Mosses and litter by lake shore: Carex spp., Gramineae, near lake. Moss and litter at lake shore (on cape near hut): Sphagnum girgensohnii, Sph. squarrosum, Sph. spp. sparse Betula, Padus , Salix, young Populus tremula, sedge and graminoid Salix sp. etc., 05.IX.2001, leg. A.R.; 1 $, Yuganskiy Reserve, Ay- tussocks, Comarum palustre, Equisetum spp., ?Aulacomnium sp. Magromsy River Basin, Medvezhyi Ugol cordon, mosses and et al., 11.IX.1999, leg. A.R.; 2 ##, Malyi Yugan River Basin, 3– litter at southern border of sedge-mossy swamp: Carex rostrata, 5 km SW of cordon at Kol-Kotchen-Yagun River, Moss and C. spp., Comarum palustre, Equisetum spp., Sphagnum girgensoh- litter under Picea and Abies with Hylocomium splendens, Pleu- nii, Sph. spp., Plagiomnium sp., Aulacomnium sp., Calamagrostis rozium schreberi, Polytrichum commune, Linnaea borealis, sparse sp., Menyanthes trifoliata etc., among sparse young birches, Equisetum sylvaticum , Maianthemum bifolium , Trientalis euro- 04.X.2002, leg. A.R. paea, Vaccinium vitis-idaea, 12.IX.1999, leg. A.R.; 4 $$, Malyi 1 $, Tobolsk Field Research Station, mosses and litter and Yugan River Basin, Kol-Kotchen-Yagun River, 3–4 km S of in sweeping on small swamp with Carex spp., Poaceae, Sphag- cordon. Moss and litter at river bank: Padus, Salix sp., Spiraea Linyphiid spiders of the West Siberian Plain 71 spp., Filipendula ulmaria, Ribes nigrum, Galium sp., Carex spp., 02.IX.2001, leg. A.R.; 3 $$, near S border of buffer area of Gramineae, Equisetum spp., ?Aulacomnium sp., Plagiomnium sp., Yuganskiy Reserve, Koimlor (Krimlor) Lake. Mosses and litter Climacium dendroides et al., 13.IX.1999, leg. A.R.; 2 $$, Malyi in tussocks between sparse Betula and Salix sp. near lake shore: Yugan River Basin, 3–5 km SW of cordon at Kol-Kotchen- Carex spp., Gramineae, Sphagnum squarrosum , Sph . centrale, Yagun River, near lake. Litter under birch and aspen in birch Sph . girgensohnii , Comarum palustre, sparse Equisetum sp. forest with low hummocky near SE shore of lake: Betula, sparse 02.IX.2001, leg. A.R.; 2 $$, near S border of buffer area of Populus tremula, Salix sp., Spiraea sp., Carex spp., Gramineae, Yuganskiy Reserve, Kolynlor Lake. Lake shore: Carex spp., Comarum palustre, sparse Equisetum sylvaticum et al., 15.IX.1999, Gramineae, Sphagnum girgensohnii , Sph . squarrosum , Sph. spp. leg. A.R.; 1 #, Malyi Yugan River Basin, 3–5 km SW of cordon sparse Betula, Salix sp. etc., 04.IX.2001, leg. A.R.; 1 $, near S at Kol-Kotchen-Yagun River, near lake. Litter between tussocks border of buffer area of Yuganskiy Reserve, Kolynlor Lake. and sedge-graminoid tussocks in birch forest with low hum- Mosses and litter by lake shore: Carex spp., Gramineae, Sphag- mocky near SE shore of lake: Betula, sparse Populus tremula, num girgensohnii, Sph. squarrosum, Sph. spp. sparse Betula, Salix Salix sp., Spiraea sp., Carex spp., Gramineae, Comarum palustre, sp. etc., 05.IX.2001, leg. A.R.; 1 #, Kol-Kotchen-Yagun River sparse Equisetum sylvaticum et al., 15.IX.1999, leg. A.R.; 1 $, Basin (confluent of Malyi Yugan River), lake near cordon. Malyi Yugan River Basin, 3–5 km SW of cordon at Kol- Tussocks with Carex spp., Calamagrostis sp., Comarum palustre Kotchen-Yagun River, near lake. Mosses and litter on grami- between sparse Betula and Pinus sylvestris at NW shore of lake: noid hummocky between sparse Betula, Populus tremula, Spi- Sphagnum centrale , Sph . girgensohnii , Sph. ?aongstroemii , Sph. raea spp., Padus with Plagiomnium sp. et al., 25.IX.1999, leg. spp., Climacium dendroides, Plagiomnium sp., Salix sp., Spiraea A.R.; 1 $, Vuya-Yany River Basin, Ay-Vuya-Yany River near sp. etc., 17.IX.2001, leg. A.R.; 2 ##, Yuganskiy Reserve, Kol- mouth. River bank: Carex sp., Equisetum sp. 19.VIII.2000, leg. Kotchen-Yagun River Basin (confluent of Malyi Yugan River), A.R.; 2 ##, 3 $$, Nyogus’yakh River near Kogontchina-2 field lake near cordon. Swampy birch-willow sparse forest by SE research station. Swampy bank of old river channel: Carex shore of lake: tussocks of Carex spp. with a touch of Calama- hummocks, Gramineae, Filipendula ulmaria, Comarum palustre, grostis sp., Comarum palustre, Sphagnum squarrosum, Sph. cen- Padus, Rosa sp., Salix sp., true mosses etc., 01.IX.2000, leg. A.R.; 4 trale, Sph. spp. etc., as well as mosses and litter between those, ##, 7 $$, Nyogus’yakh River near Kogontchina-2 field re- 20.IX.2001, leg. A.R.; 1 $, Kol-Kotchen-Yagun River (confluent search station. River banks near rill mouths: Carex sp., Gramineae, of Malyi Yugan River) NE of cordon. River bank with Carex Filipendula ulmaria, Salix sp., Padus etc., 03.IX.2000, leg. A.R.; 2 spp., Gramineae, Filipendula ulmaria, Urtica dioica, Spiraea sp. ##, 4 $$, Nyogus’yakh River near Kogontchina-2 field re- etc., 23.IX.2001, leg. A.R.; 2 $$, Kol-Kotchen-Yagun River search station. Rill banks from raised moss to confluence with (confluent of Malyi Yugan River) NE of cordon. Swampy flood- Nyogus’yakh River: Sph. ?angustifolium, Sph. magellanicum, Sph- plain birch forest: tussocks of Carex spp. & Gramineae, Comar- agnum ?russowii, Sph . girgensohnii, Sph . riparium, Carex globu- um palustre , Filipendula ulmaria, Ranunculaceae, Sphagnum laris , C . acuta , C. sp., Filipendula ulmaria , Plagiomnium sp., girgensohnii , Sph. spp., Climacium dendroides , Plagiomnium sp. Marchantia sp. etc., 04.IX.2000, leg. A.R.; 3 ##, 6 $$, Nyogus’yakh etc., 23.IX.2001, leg. A.R.; 3 ##, 1 $, Kol-Kotchen-Yagun River River Basin near Petchpan’yakh River mouth, N shore of great Basin (confluent of Malyi Yugan River), lake near cordon. lake. Mosses, litter, shaking off from grass: Carex spp., Gramineae, Mosses and litter by NE shore of lake: spp., tussocks of Carex Comarum palustre, Salix sp., ?Aulacomnium sp., Plagiomnium sp. spp., Calamagrostis sp., Sphagnum squarrosum (?aongstroemii), etc., 08.IX.2000, leg. A.R.; 4 ##, 2 $$, Nyogus’yakh River Basin Sph . centrale , Sph. ?girgensohnii , Sph . russowii between sparse near Petchpan’yakh River mouth. Mosses and litter on large birch wood with isolated Pinus sylvestris. 30.IX.2001, leg. A.R.; 2 swamp: Carex spp., Comarum palustre, Equisetum sp., Eriopho- $$, right riverside of Bolshoy Yugan River near Kamennyi rum sp., Gramineae, Rumex sp., ?Aulacomnium sp., Plagiomnium cordon. Mosses and litter in pine forest with Cladonia spp., sp., Ptilium crista-castrensis , Sphagnum sp., Chamaenerium an- Vaccinium vitis-idaea , Pleurozium schreberi , Dicranum ?polyse- gustifolium, Betula and Salix sp. etc., 13.IX.2000, leg. A.R.; 1 #, 1 tum, sparse Ledum palustre etc., 18.VIII.2002, leg. A.R.; 1 #, $, Vuya-Yany River near Ay-Vuya-Yany River mouth. Flood- right riverside of Bolshoy Yugan River near cordon Kamennyi. plain lake shore: young Betula and Populus tremula, Carex spp., Mosses and litter among tussocks of Carex spp. and Gramineae Filipendula ulmaria, Gramineae, Sphagnum girgensohnii , Aula- with Sphagnum girgensohnii , Sph. spp., Polytrichum commune comnium sp., Climacium dendroides , Comarum palustre, etc., in waterlogged birch forest on flood-plain, 19.VIII.2002, 23.VIII.2000, leg. A.R.; 1 #, 1 $, Nyogus’yakh River near leg. A.R.; 2 $$, right riverside of Bolshoy Yugan River near Kogontchina-2 field research station. Mosses and peat on cordon Kamennyi. Mosses and litter in forest with Picea flood-plain forest swamp with Filipendula ulmaria, Gramineae, obovata, Abies sibirica, Pinus sibirica, Carex spp. and Gramineae Ribes nigrum, Sorbus sibirica, Rosa sp., Matteuccia struthiopteris, with Sphagnum girgensohnii , Sph. spp., Polytrichum commune Comarum palustre, Rubus saxatilis etc., 29.VIII.2000, leg. A.R.; 2 etc., in waterlogged birch forest on flood-plain, 21.VIII.2002, $$, Nyogus’yakh River near Kogontchina-2 field research sta- leg. A.R.; 1 #, Ay-Magromsy River Basin, Medvezhyi Ugol tion. River bank: Carex sp. and Gramineae, 30.VIII.2000, leg. cordon, mosses and litter under Pinus sylvestris, P. sibirica, Picea A.R.; 1 $, Nyogus’yakh River Basin near Petchpan’yakh River obovata, Betula with Vaccinium vitis-idaea, V. myrtillus, Pleuro- mouth. Mosses and litter in swampy flood-plain forest, between zium schreberi , Hylocomium splendens , Dicranum polysetum, Betula, Abies sibirica, Picea obovata, Salix sp., Pinus sibirica etc.: Sphagnum ?warnstorfii , Linnaea borealis , Equisetum sylvaticum tussocks of Carex spp., Filipendula ulmaria, Gramineae, Comar- etc., under aspen trunk, and under mosses, lichens, bark scales um palustre, Menyanthes trifoliata, Plagiomnium sp., Aulacomni- on bases of pine trees, 18.IX.2002, leg. A.R.; 1 $, Ay-Magromsy um sp., Climacium dendroides etc., 12.IX.2000, leg. A.R.; 3 ##, 1 River Basin, Medvezhyi Ugol cordon, mosses and litter at rill $, Bolshoy Yugan River, 6–7 km below Sugmuten’yakh River bank and on flood-plain of rill: Calamagrostis sp., Ribes spp., mouth. Mosses and litter between sedges and Gramineae on Rosa sp., Filipendula ulmaria, Matteuccia struthiopteris, Equise- swamped winter road with Carex spp., Calamagrostis sp., Sphag- tum sylvaticum , Sphagnum squarrosum , Sph . girgensohnii , Sph. num girgensohnii , Sph. spp. etc., and on the plot without spp., Plagiomnium sp. etc., 20.IX.2002, leg. A.R.; 7 ##, 4 $$, Sphagnum spp., 21.VIII.2001, leg. A.R.; 2 ##, 3 $$, Bolshoy Malyi Yugan River, cordon below Lyarykni River mouth, open Yugan River, 6–7 km below Sugmuten’yakh River mouth. swamp with tussocks of Carex spp. and Calamagrostis sp. with Mosses and litter between Carex spp., Gramineae, Filipendula Comarum palustre , Salix sp., Sphagnum squarrosum , Sph. spp., ulmaria, Spiraea sp., with Plagiomnium sp., Climacium dendroi- ?Aulacomnium sp. etc., between sparse young Betula, 17.VIII.2003, des etc., on swamped forest road. 22.VIII.2001, leg. A.R.; 5 $$, leg. A.R.; 2 $$, Malyi Yugan River, cordon below Lyarykni near S border of buffer area of Yuganskiy Reserve, Kolynlor River mouth, dried open sedge swamp: Carex spp. and Calama- Lake. Lake shore: Carex spp., Gramineae, Sphagnum spp. etc., grostis sp. (channel of temporary stream), 17.VIII.2003, leg. A.R.; 29.VIII.2001, leg. A.R.; 3 ##, 5 $$, near S border of buffer area 20 ## & $$, Malyi Yugan River, near cordon below Maalya- of Yuganskiy Reserve, Koimlor (Krimlor) Lake. Mosses between kh River mouth, mosses and litter in forest with Pinus sibirica, Equisetum fluviatile and under Salix sp. on marshy lake shore, P . sylvestris , Picea , Betula , Populus tremula , Abies , Equisetum 72 A.V. Tanasevitch sylvaticum, Linnaea borealis, Vaccinium vitis-idaea, V . myrtillus, mune, P . strictum, Pleurozium schreberi, ?Aulacomnium sp., Cli- Carex globularis , Pleurozium schreberi , Hylocomium splendens, macium dendroides etc., 30.IX.2003, leg. A.R.; 6 $$, Tobolsk Polytrichum commune, sparse spots of Sphagnum girgensohnii Field Research Station, flood-plain of left bank of Irtysh River, and Ledum palustre, 20.VIII.2003, leg. A.R.; 20 ## & $$, swampy side of Letneye Lake: Carex spp., Comarum palustre, Yuganskiy Reserve (buffer zone), flood-plain of a rill (conflu- Calamagrostis sp., small true mosses, 03.VI.2004, leg. A.R.; 14 ent of Malyi Yugan River) near Achimovy-2 village: tussocks of $$, in litter under Pinus sibirica, Tilia cordata, Betula, Populus Carex spp. and Poaceae, depressions with Carex rostrata, Fil- tremula , Picea obovata , Abies sibirica with Carex globularis, ipendula ulmaria , Comarum palustre , Urtica dioica , Sphagnum Stellaria sp., Maianthemum bifolium , Lathyrus sp., Equisetum centrale, Climacium dendroides, Plagiomnium sp., Rubus saxatilis, sylvaticum, Pyrola sp. etc., on slope, 06.VI.2004, leg. A.R.; 1 #, 4 Salix sp., sparse Betula and Picea, 24.VIII.2003, leg. A.R. $$, mosses and litter under Betula with Equisetum sylvaticum, 12 ## & $$, Tobolsk Field Research Station, flood-plain Pyrola sp., Lathyrus sp. etc., on gentle slope near crest of swamp near left bank of Irtysh River: Carex spp., Comarum Spartakovskaya Mt., 06.VI.2004, leg. A.R.; 6 ##, 5 $$, plant palustre , Salix sp., Climacium dendroides, small true mosses, debris and leaf litter at margin of inundated flood-plain of Lemna sp. etc., 15.IX.2003, leg. A.R.; 50 ## & $$, flood-plain Varpak River: Carex sp., Poaceae, Lythrum sp., Salix sp. on swamps of left bank of Irtysh River with Salix sp., Betula, Carex gentle slope, aspen trees on steep slope, depression in the spp., Comarum palustre , Climacium dendroides , Aulacomnium ground with aspen leaf drift, 07.VI.2004, leg. A.R.; 20 ##&$$, palustre , Sphagnum girgensohnii , Sph. ?russowii , Sph . centrale, flood-plain swamp near left bank of Irtysh River: Carex spp., Sph. squarrosum etc., 27.IX.2003, leg. A.R.; 5 ##, 2 $$, mosses Comarum palustre, Salix sp., Climacium dendroides, small true and litter and in sweeping on small swamp with Carex spp., mosses, Lemna sp. etc., 09.VI.2004, leg. A.R.; 2 ##, 3 $$, mosses Poaceae, Sphagnum girgensohnii, Sph. squarrosum, Sph. ?riparium, and plant debris in swampy birch-willow sparse forest of flood- Sph. ?balticum, Sph. centrale etc., 20.IX.2003, leg. A.R.; 6 ##, 3 plain near left bank of Irtysh River: Carex spp., Calamagrostis $$, in leaf litter under Salix sp. at border of open flood-plain sp., Sphagnum ?balticum , Sph. ?girgensohnii , Sph . squarrosum, depression of left bank of Irtysh River, 19.IX.2003, leg. A.R.; 30 Comarum palustre, Lythrum sp., Filipendula ulmaria, Climacium ##, 3 $$, flood-plain of Missiinka River near mouth, in litter dendroides etc., 09.VI.2004, leg. A.R.; 3 ##, 2 $$, 11 km S of under Salix sp., 18.IX.2003, leg. A.R.; 2 ##, 1 $, small swamp Gornoslinkino, clayish right bank of Irtysh River (narrow fold with Carex sp. and Salix sp. amid birch forest on high flood- at rill mouth) up-stream of Tobolsk Field Research Station, in plain of left bank of Irtysh River, 30.IX.2003, leg. A.R.; 2 ##, 5 leaf litter and sweeping under Salix sp. with small true mosses, $$, mosses and litter among Carex spp. with Plagiomnium sp. Marchantia sp., Equisetum sp., Carex sp., Calamagrostis sp. etc., etc., on swampy forest road, 13.IX.2003, leg. A.R.; 5 ##, 7 $$, 11.VI.2004, leg. A.R. 12 ##&$$, clayish right bank of Irtysh mosses and litter and in sweeping on small swamp with Carex River (narrow fold at rill mouth) up-stream of Tobolsk Field spp., Poaceae, Sphagnum girgensohnii , Sph . squarrosum , Sph. Research Station, leaf litter under Salix sp. with small true ?riparium, Sph. ?balticum, Sph. centrale etc., 21.IX.2003, leg. A.R.; mosses, Marchantia sp., Equisetum sp., Carex sp., Calamagrostis 2 $$, gentle sandy left bank of Irtysh River with clayish spots: sp. etc., 04.VI.2004, leg. A.R. among Equisetum sp., 15.IX.2003, leg. A.R.; 1 #, 1 $, steep right DISTRIBUTION. Throughout the Palaearctic. bank of Irtysh River up-stream of Tobolsk Field Research Station, small mosses and litter among Tussilago farfara on clay Praestigia pini (Holm, 1950) and loam, 14.IX.2003, leg. A.R.; 20 ## & $$, in litter under Salix sp. with Poaceae, Carex sp., Filipendula ulmaria, Lamiaceae etc., 26.IX.2003, leg. A.R.; 2 ##, 1 $, steep right bank of Irtysh 1996 Praestigia pini, Esyunin, Ekosistemy Srednego Priob’ya, River up-stream of Tobolsk Field Research Station, small 1, p. 73. mosses and litter among Tussilago farfara on clay and loam, 17.IX.2003, leg. A.R.; 1 $, Tobolsk Field Research Station, flood- DISTRIBUTION. Fennoscandia, throughout Siberia, plain of Missiinka River near mouth, sweeping on Carex spp., known in Mongolia. Comarum palustre , Mentha sp., Lythrum sp., Stachys sp. etc., 18.IX.2003, leg. A.R.; 1 #, 3 $$, steep right bank of Irtysh River up-stream of Tobolsk Field Research Station, small mosses and Savignia frontata Blackwall, 1833 litter among Tussilago farfara on clay and loam, 03.X.2003, leg. A.R.; 20 ## & $$, Tobolsk Field Research Station, in moss MATERIAL. 1 #, Surgutskiy Refuge, Ob’ River Basin, right (Climacium dendroides) and leaf litter under Salix sp. at lake bank of Materikovyi Pasl Channel. Lake shore: Carex spp., shore on open flood-plain of left bank of Irtysh River, 19.IX.2003, Comarum palustre, Lamiaceae, Climacium, Plagiomnium sp. etc., leg. A.R.; 2 ##, 4 $$, in mosses and litter under Betula, Picea, 10.VIII.2000, leg. A.R. Alnus with Pyrola sp., Carex globularis, Poaceae, Equisetum 1 #, Yuganskiy Reserve, near Vuya-Yany River mouth. Moss sylvaticum , Linnaea borealis , Pleurozium schreberi , Dicranum and litter at border of open swamp with Carex spp., ?Eriophorum polysetum, Oxalis acetosella, Galium sp., Aegopodium podagraria, sp., Comarum palustre , Equisetum sp., Sphagnum ?girgensohnii, Rubus idaeus , R . saxatilis etc., on slope (from foot to top), Sph . squarrosum , Maianthemum bifolium, sparse Betula etc., 28.IX.2003, leg. A.R.; 2 $$, mosses and litter on plate crest near 15.VIII.1998, leg. A.R.; 1 $, Nyogus’yakh River, cordon Bisarkina. bank of Irtysh River: birch forest with sparse young Pinus River bank: mosses and litter under Salix spp., Padus, Matteuccia sibirica, Abies, Tilia, Sorbus, Carex globularis, Poaceae, Pyrola sp., struthiopteris , Filipendula ulmaria , Urtica dioica etc., 29.X.1998, Equisetum sylvaticum etc., 10.IX.2003, leg. A.R.; 15 ## & $$, leg. A.R.; 2 ##, 4 $$, Bolshoy Yugan River, near cordon flood-plain of left bank of Irtysh River, swampy shore of Kamennyi. Waterlogged forest road (winter road): Carex spp., Letneye Lake: Carex spp., Comarum palustre, Scirpus sp., mosses. Eriophorum sp., Gramineae, Sphagnum spp., Polytrichum spp. etc., 01.X.2003, leg. A.R.; 15 ## & $$, Tobolsk Field Research 22.VIII.1999, leg. A.R.; 2 $$, Malyi Yugan River Basin, Kol- Station, mosses and litter among sparse Salix spp., Betula, Pinus Kotchen-Yagun River, 3–4 km S of cordon. Moss and litter at sylvestris with tussocks of Carex spp., Poaceae, Lythrum sp., river bank: Padus, Salix sp., Spiraea spp., Filipendula ulmaria, Ribes Filipendula ulmaria , Climacium dendroides, isolated spots of nigrum , Gallium sp., Carex spp., Gramineae, Equisetum spp., Sphagnum squarrosum, Sph. sp. etc., on swamped flood-plain of ?Aulacomnium sp., Plagiomnium sp., Climacium dendroides et al., left bank of Irtysh River, 29.IX.2003, leg. A.R.; 25 ## & $$, in 13.IX.1999, leg. A.R.; 1 #, Vuya-Yany River near Ay-Vuya-Yany litter and mosses under Salix sp. with Poaceae, Carex spp., River mouth. Flood-plain depression: Filipendula ulmaria, Carex Filipendula ulmaria , Galium sp., Climacium dendroides etc., at sp., Gramineae, Spiraea sp., Ribes nigrum , Comarum palustre, border of flood-plain of Varpak River, 23.IX.2003, leg. A.R.; 1 $, Sphagnum squarrosum , Sph . girgensohnii , Climacium dendroides, mosses and litter in swampy birch forest with Pinus sylvestris, Aulacomnium sp., Plagiomnium sp. etc., 24.VIII.2000, leg. A.R.; 4 Ledum palustre, Vaccinium uliginosum, Carex globularis, Sphag- ##, 5 $$, Vuya-Yany River near Ay-Vuya-Yany River mouth. num girgensohnii , Sph. ?russowii , Sph. spp., Polytrichum com- Clay river banks near mouth of small left confluent (500 m Linyphiid spiders of the West Siberian Plain 73 lower of field research station): Carex spp., Gramineae, Mentha Scandichrestus tenuis (Holm, 1943) sp., ?Trollius sp. etc., 25.VIII.2000, leg. A.R.; 1 #, 1 $, Nyogus’yakh River near Kogontchina-2 field research station. Swampy bank MATERIAL. 2 ##, Noyabrsky, dry Pinus forest, Ledum, of old river channel: Carex hummocks, Gramineae, Filipendula Vaccinium vitis-idea , V . uliginosum , Empetrum, moss & lichen ulmaria, Comarum palustre, Padus, Rosa sp., Salix sp., true mosses (Cladina & Cetraria), 16.VIII.2000, leg. A.T. etc., 01.IX.2000, leg. A.R.; 1 $, Vuya-Yany River near Ay-Vuya- DISTRIBUTION. Europe, in Siberia known from the Yany River mouth. Flood-plain lake shore: young Betula and Populus tremula , Carex spp., Filipendula ulmaria, Gramineae, Urals eastward to Yenisey River. This is the first record in Sphagnum girgensohnii, Aulacomnium sp., Climacium dendroides, West Siberia. Comarum palustre, 23.VIII.2000, leg. A.R.; 2 $$, Nyogus’yakh River near Kogontchina-2 field research station. River bank: Semljicola lapponicus (Holm, 1939) Filipendula ulmaria, Gramineae, Salix sp., Padus avium, Gallium sp., mosses, 30.VIII.2000, leg. A.R.; 3 ##, 6 $$, Nyogus’yakh MATERIAL. 1 #, 5 $$, Noyabrsky, Salix bushes along River Basin near Petchpan’yakh River mouth. Mosses and litter brook, litter, 15.VIII.2000, leg. A.T. in swampy flood-plain forest, between Betula, Abies sibirica, Picea DISTRIBUTION. Northern Europe, in Siberia known obovata , Salix sp., Pinus sibirica etc.: tussocks of Carex spp., Filipendula ulmaria, Gramineae, Comarum palustre , Menyanthes from the Urals eastward to East Siberia and Cisokhotia. trifoliata, Plagiomnium sp., Aulacomnium sp., Climacium dendroi- Unknown from the mountains of South Siberia. des etc., 12.IX.2000, leg. A.R.; 1 $, Malyi Yugan River, near cordon below Maalyakh River mouth, mosses and litter in forest Semljicola latus (Holm, 1939) with Pinus sibirica , P . sylvestris , Picea , Betula , Populus tremula, Abies , Equisetum sylvaticum , Linnaea borealis , Vaccinium vitis- idaea, V. myrtillus, Carex globularis, Pleurozium schreberi, Hyloco- MATERIAL. 1 #, near Ugut, Kynyaminskoye Lake. Sphag- mium splendens, Polytrichum commune, sparse spots of Sphagnum num girgensohnii, Sph. ?russowii, Sph. squarrosum, Sph. ?centrale, girgensohnii and Ledum palustre, 20.VIII.2003, leg. A.R.; 7 ##, 3 Sph. spp., Equisetum sylvaticum , Polytrichum commune amid $$, Yuganskiy Reserve (buffer zone), flood-plain of a rill (con- swampy birch forest near lake shore, 11.VIII.2001, leg. A.R. fluent of Malyi Yugan River) near Achimovy-2 village: tussocks 2 ##, 1 $, Yuganskiy Reserve, Nyogus’yakh River near of Carex spp. and Poaceae, depressions with Carex rostrata, Petchpan’yakh River mouth. Mosses and litter under Abies Filipendula ulmaria, Comarum palustre, Urtica dioica, Sphagnum sibirica, Betula, Pinus sibirica, Sorbus sibirica with Hylocomium centrale, Climacium dendroides, Plagiomnium sp., Rubus saxatilis, splendens, Pleurozium schreberi, Gramineae, Equisetum pratense, Salix sp., sparse Betula and Picea, 24.VIII.2003, leg. A.R. Eq. sylvaticum, Majanthemum bifolium, Trientalis europaea, Lin- 5 ##, 1 $, Tobolsk Field Research Station, flood-plain naea borealis, Vaccinium vitis-idaea etc., in flood-plain forest on swamp near left bank of Irtysh River: Carex spp., Comarum natural levee, 09.IX.2000, leg. A.R.; 1 #, Ay-Magromsy River palustre , Salix sp., Climacium dendroides, small true mosses, Basin, Medvezhyi Ugol cordon, mosses and litter in flood-plain Lemna sp. etc., 15.IX.2003, leg. A.R.; 1 $, flood-plain swamps of afforested sedge hummocky and on flood-plain of rill with left bank of Irtysh River with Salix sp., Betula , Carex spp., Filipendula ulmaria , Ribes spp., Comarum palustre , Equisetum Comarum palustre, Climacium dendroides, Aulacomnium palus- sylvaticum , Plagiomnium sp., Climacium dendroides , Carex sp., tre , Sphagnum girgensohnii, Sph. ?russowii , Sph . centrale , Sph. Calamagrostis sp., Sphagnum squarrosum, Sph. spp. etc., (+4C?), squarrosum etc., 27.IX.2003, leg. A.R.; 1 #, 3 $$, in moss 01.X.2002, leg. A.R. (Climacium dendroides) and leaf litter under Salix sp. at lake 1 #, Luginetsky, Picea & Betula forest, in moss, 28.VIII.1998, shore on open flood-plain of left bank of Irtysh River, 19.IX.2003, leg. A.T. leg. A.R.; 1 #, 2 $$, flood-plain of left bank of Irtysh River, 1 #, Tyumen, VI.2000, leg. U. swampy shore of Letneye Lake: Carex spp., Comarum palustre, DISTRIBUTION. Northern Europe, in Siberia known Scirpus sp., mosses. 01.X.2003, leg. A.R.; 1 $, mosses and litter from the Urals eastward to East Siberia; in the mountains of among sparse Salix spp., Betula, Pinus sylvestris with tussocks of South Siberia recorded in Altai Mts, Tuva and Sayan. Known Carex spp., Poaceae, Lythrum sp., Filipendula ulmaria, Climacium also in Mongolia. dendroides, isolated spots of Sphagnum squarrosum, Sph. sp. etc., on swamped flood-plain of left bank of Irtysh River, 29.IX.2003, Semljicola thaleri (Eskov, 1981) leg. A.R.; 2 $$, in litter and mosses under Salix sp. with Poaceae, Carex spp., Filipendula ulmaria, Galium sp., Climacium dendroides etc., at border of flood-plain of Varpak River, 1992 Latithorax thaleri, Esyunin & Novokshenov, Trudy Zool. 23.IX.2003, leg. A.R.; 1 $, plant debris among Carex sp. and Inst. AN SSSR. Vol. 226, p. 116. Poaceae on promontory at margin of inundated flood-plain of 1996 Latithorax thaleri, Esyunin, Ekosistemy Srednego Varpak River, 06.VI.2004; leg. A.R. Priob’ya, 1, p. 72. 1 #, 2 $$, Nefteyugansk, mixed forests: Abies, Pinus sibirica, Picea, Betula with Equisetum, Vaccinium spp., Empetrum, mosses, MATERIAL. 2 $$, Yuganskiy Reserve, Nyogus’yakh River, VIII.2001, leg. A.T. cordon Bisarkina. Mosses and litter at forest lake shore: Carex DISTRIBUTION. Widespread in Europe, known in the spp., Filipendula ulmaria, Gramineae, Equisetum spp., ferns, Plagi- Caucasus and eastern Kazakhstan, in Siberia from the Urals omnium sp., Climacium dendroides , Sphagnum squarrosum , To- eastward to Yenisey River; recorded in Altai Mts, Tuva and menthypnum sp. etc., 26.X.1998, leg. A.R.; 1 $, Nyogus’yakh River, Sayan. This is the first record in West Siberia. cordon Bisarkina. Parching rill near cordon: mosses and litter in rill-bed and by banks (Carex spp., Equisetum sylvaticum, Sphag- num ?riparium, Sph. ?girgensohnii, Polytrichum commune, Filipen- Savignia producta Holm, 1977 dula ulmaria, Gramineae, Veratrum, Linnaea, Maianthemum, Tri- entalis, Tomenthypnum sp., Plagiomnium sp. etc.), 31.X.1998, leg. A.R.; 1 #, 3 $$, Nyogus’yakh River near Kogontchina-2 field 1992 Savignia producta, Esyunin & Novokshenov, Trudy Zool. research station. Mosses and peat under Carex ?globularis near Inst. AN SSSR, 226, p. 116. small forest swamp on island in the middle of large high moor, 1996 Savignia producta, Esyunin, Ekosistemy Srednego 02.IX.2000, leg. A.R.; 4 $$, Nyogus’yakh River near Petchpan’yakh Priob’ya, 1, p. 73. River mouth. Mosses and litter under Abies sibirica, Betula, Pinus sibirica , Sorbus sibirica with Hylocomium splendens , Pleurozium DISTRIBUTION. Northern Europe, in Siberia known schreberi, Gramineae, Equisetum pratense, Eq. sylvaticum, Majan- from the Urals eastward to Yenisey River. themum bifolium, Trientalis europaea, Linnaea borealis, Vaccini- 74 A.V. Tanasevitch um vitis-idaea etc., in flood-plain forest on natural levee, obovata in forest near cordon: Ledum palustre, Chamaedaphne 09.IX.2000, leg. A.R. calyculata , Pleurozium schreberi , Hylocomium splendens , Di- 2 ##, 1 $, Tomsk, Abies forest, in moss and litter, 15– cranum sp., Polytrichum commune , Vaccinium vitis-idaea , V. 16.VIII.1998, leg. A.T. myrtillus, spots of Sphagnum girgensohnii and Sph. russowii et al., 7 ##, 11 $$, Nefteyugansk, mixed forests: Abies , Pinus 25.IX.2001, leg. A.R. sibirica, Picea, Betula with Equisetum, Vaccinium spp., Empetrum, 1 #, Tyumen, VI.2000, leg. U. mosses, VIII.2001, leg. A.T. DISTRIBUTION. Throughout the Palaearctic. 1 #, Tyumen, VI.2000, leg. U. DISTRIBUTION. Northeastern Europe; in Siberia known Tallusia experta (O. Pickard-Cambridge, 1871) from the Urals to Cisokhotia, Kamchatka; from eastern Ka- zakhstan through the mountains of South Siberia via the 1996 Centromerus expertus, Esyunin, Ekosistemy Srednego Lake Baikal region eastward to the southern part of Kha- Priob’ya, 1, p. 70. barovsk Prov. MATERIAL. 1 $, Yuganskiy Reserve, Malyi Yugan River Silometopus elegans (Pickard-Cambridge, 1872) Basin, 3–5 km SW of cordon at Kol-Kotchen-Yagun River, near lake. Mosses and sparse spots of litter near shore of lake: MATERIAL. 1 #, Yuganskiy Reserve, Malyi Yugan River, Sphagnum ?girgensohnii, Sph. spp., Comarum palustre, Gramine- cordon below Lyarykni River mouth, open swamp with tus- ae, Carex ?globularis, Oxycoccus sp., sparse young Betula and socks of Carex spp. and Calamagrostis sp. with Comarum Padus, 23.IX.1999, leg. A.R.; 2 ##, 1 $, Malyi Yugan River palustre, Salix sp., Sphagnum squarrosum, Sph. spp., ?Aulacomni- Basin, Kol-Kotchen-Yagun River, 1 km S of cordon. Mosses and um sp. etc., between sparse young Betula, 17.VIII.2003, leg. A.R.; litter on small sedge-mossy swamp near river bank: Carex spp., 1 #, Malyi Yugan River, cordon below Lyarykni River mouth, Sphagnum ?girgensohnii, Sph. ?riparium, Plagiomnium sp. et al., open swamp with tussocks of Carex spp. and Calamagrostis sp. 24.IX.1999, leg. A.R.; 3 ##, 4 $$, Nyogus’yakh River near with Comarum palustre, Salix sp., Sphagnum squarrosum , Sph. Kogontchina-2 field research station. Mosses and litter on spp., ?Aulacomnium sp. etc., between sparse young Betula, swamp with Pinus sylvestris, Betula, Ledum palustre, Andromeda 22.VIII.2003, leg. A.R. polifolia, Chamaedaphne calyculata, Vaccinium uliginosum, Erio- DISTRIBUTION. Widespread in Europe, known from phorum sp., Oxycoccus palustris, Sphagnum fuscum, Sph. magel- the Caucasus; in Siberia: from the Urals eastward to Yenisey lanicum, Sph. ?angustifolium, Sph. spp., Rubus chamaemorus etc., River. In South Siberia recorded in Tuva and Sayan. This is 31.VIII.2000, leg. A.R.; 1 $, Nyogus’yakh River near Kogontchi- na-2 field research station. Rill banks from raised moss to the first record in West Siberia. confluence with Nyogus’yakh River: Sph. ?angustifolium , Sph. magellanicum, Sphagnum ?russowii, Sph. girgensohnii, Sph. ripari- Stemonyphantes conspersus (L.Koch, 1879) um, Carex globularis , C . acuta, C. sp., Filipendula ulmaria, Plagiomnium sp., Marchantia sp. etc., 04.IX.2000, leg. A.R.; 1 $, 1996 Stemonyphantes conspersus, Esyunin, Ekosistemy Sred- Nyogus’yakh River Basin near Petchpan’yakh River mouth, N nego Priob’ya, 1, p. 71. shore of great lake. Mosses, litter, shaking off from grass: Carex spp., Gramineae, Comarum palustre, Salix sp., ?Aulacomnium sp., Plagiomnium sp. etc., 08.IX.2000, leg. A.R.; 2 $$, Nyogus’yakh DISTRIBUTION. Siberia: from the Urals eastward to River Basin near Petchpan’yakh River mouth. Mosses and litter Yenisey River; from eastern Kazakhstan through the moun- on large swamp: Carex spp., Comarum palustre, Equisetum sp., tains of South Siberia eastward to the Lake Baikal region. Eriophorum sp., Gramineae, Rumex sp., ?Aulacomnium sp., Plagi- omnium sp., Ptilium crista-castrensis, Sphagnum sp., Chamaeneri- Stemonyphantes sibiricus (Grube, 1861) um angustifolium, sparse Betula & Salix sp., spots of dwarf birch on hummocks etc., 11.IX.2000, leg. A.R.; 2 $$, Nyogus’yakh River Basin near Petchpan’yakh River mouth. Mosses and litter MATERIAL. 1 $, Luginetsky, Abies & Picea forest, log, unger on large swamp: Carex spp., Comarum palustre, Equisetum sp., bark, 28.VIII.1998, leg. A.T. Eriophorum sp., Gramineae, Rumex sp., ?Aulacomnium sp., Plagi- DISTRIBUTION. West, Middle and East Siberia, omnium sp., Ptilium crista-castrensis, Sphagnum sp., Chamaeneri- Chukotka, Cisokhotia, Kamchatka, the Kurile Islands and um angustifolium, Betula and Salix sp. etc., 13.IX.2000, leg. A.R.; Sakhalin; through the mountains of South Siberia via the 1 $, Nyogus’yakh River Basin near Petchpan’yakh River mouth. Lake Baikal region eastward to the southern part of Kha- Mosses and litter on large open swamp: Sphagnum ?angustifoli- barovsk Prov., Maritime Prov.; recorded in Mongolia. This um , Sph. ?girgensohnii , Sph. ?russowii , Sph. sp., dwarf birch, is the first record in West Siberia. Oxycoccus spp., Gramineae, Carex spp., Comarum palustre, Equisetum sp., ?Aulacomnium sp., Plagiomnium sp., Ptilium crista- castrensis etc., 24.IX.2000, leg. A.R.; 3 $$, Vuya-Yany River Styloctetor romanus (O. Pickard-Cambridge, 1872) Basin near Ay-Vuya-Yany River mouth (2 km E of cordon). In mosses along rill banks: Sphagnum girgensohnii, Sph . squarro- 1996 Styloctetor romanus, Esyunin, Ekosistemy Srednego sum, Sph. spp., Marchantia sp., Equisetum sylvaticum, Carex spp., Priob’ya, 1, p. 71, male only, revised by Esyunin, pers. comm. Calamagrostis sp., Polytrichum commune etc., 21.VIII.2000, leg. A.R.; 1 #, 1 $, Vuya-Yany River near Ay-Vuya-Yany River DISTRIBUTION. Throughout the Palaearctic except for mouth. Mosses and litter on swamp: Pinus sylvestris , Ledum the southern Far East. palustre, Andromeda polifolia, Chamaedaphne calyculata, Oxy- coccus spp., Sphagnum magellanicum, Sph. ?angustifolium, Erio- phorum sp. etc., 27.VIII.2000, leg. A.R.; 2 $$, Bolshoy Yugan Styloctetor stativus (Simon, 1881) River, 6–7 km below Sugmuten’yakh River mouth. Mosses and litter between sedges and Gramineae on swamped winter road 1996 Styloctetor romanus, Esyunin, Ekosistemy Srednego with Carex spp., Calamagrostis sp., Sphagnum girgensohnii, Sph. Priob’ya, 1, p. 71, female only, revised by Esyunin, pers. comm. spp. etc., 20.VIII.2001, leg. A.R.; 1 $, Bolshoy Yugan River, 6–7 km below Sugmuten’yakh River mouth. Mosses and litter MATERIAL. 2 ##, Yuganskiy Reserve, Kol-Kotchen-Ya- between sedges and Gramineae on swamped winter road with gun River Basin (confluent of Malyi Yugan River), lake near Carex spp., Calamagrostis sp., Sphagnum girgensohnii, Sph. spp. cordon. Mosses and litter under Pinus sylvestris, P. sibirica, Picea etc., and on the plot without Sphagnum spp., 21.VIII.2001, leg. Linyphiid spiders of the West Siberian Plain 75

A.R.; 1 #, 2 $$, near S border of buffer area of Yuganskiy zium schreberi, Linnaea borealis, Pyrola sp., Rubus idaeus etc., on Reserve, Kolynlor Lake. Lake shore: Carex spp., Gramineae, gentle slope near crest of Spartakovskaya Mt. 25.IX.2003, leg. Sphagnum girgensohnii, Sph. squarrosum, Sph. spp. sparse Betula, A.R.; 2 ##, 4 $$, Tobolsk Field Research Station, in mosses Salix sp. etc., 04.IX.2001, leg. A.R.; 2 ##, near S border of and litter under Betula , Picea , Alnus with Pyrola sp., Carex buffer area of Yuganskiy Reserve, Kolynlor Lake. Mosses and globularis, Poaceae, Equisetum sylvaticum, Linnaea borealis, Pleu- litter by lake shore: Carex spp., Gramineae, Sphagnum girgen- rozium schreberi, Dicranum polysetum, Oxalis acetosella, Galium sohnii, Sph . squarrosum, Sph. spp. sparse Betula, Salix sp. etc., sp., Aegopodium podagraria , Rubus idaeus , R . saxatilis etc., on 05.IX.2001, leg. A.R.; 3 $$, Ay-Magromsy River Basin, Med- slope (from foot to top), 28.IX.2003, leg. A.R. vezhyi Ugol cordon, mosses and litter at swamp border: Carex DISTRIBUTION. Widespread in Europe, known in the rostrata , Sphagnum girgensohnii , Sph. spp. etc., among sparse Urals and West Siberia. This is the first record in West young birches, 11.IX.2002, leg. A.R.; 2 ##, 1 $, Ay-Magromsy Siberia. River Basin, Medvezhyi Ugol cordon, mosses and litter at rill bank and on flood-plain of rill: Calamagrostis sp., Ribes spp., Rosa sp., Filipendula ulmaria, Matteuccia struthiopteris, Equise- Tapinocyba pallens (O. Pickard-Cambridge, 1872) tum sylvaticum , Sphagnum squarrosum , Sph . girgensohnii , Sph. spp., Plagiomnium sp. etc., 20.IX.2002, leg. A.R.; 2 $$, Ay- 1996 Tapinocyba pallens, Esyunin, Ekosistemy Srednego Magromsy River Basin, Medvezhyi Ugol cordon, mosses and Priob’ya, 1, p. 73. litter in tussocks of Carex sp. with Sphagnum squarrosum, Sph. centrale, Sph . girgensohnii, Sph. ?russowii, Plagiomnium sp. etc., MATERIAL. 12 ##, 23 $$, Noyabrsky, dry Pinus forest, and also sweeping on Carex rhynchophysa among swampy Ledum, Vaccinium vitis-idea, V . uliginosum, Empetrum, moss & birch forest at SW border of the reserve, 21.IX.2002, leg. A.R.; 1 lichen (Cladina & Cetraria), 20.VIII.2000, leg. A.T. #, Ay-Magromsy River Basin, Medvezhyi Ugol cordon, mosses DISTRIBUTION. Europe, the Caucasus, West Siberia. on sedge-mossy swamp: Carex rostrata , C. spp., Sphagnum ?angustifolium, Sph. girgensohnii, Sph. sp., Oxycoccus spp, (+8C?), 26.IX.2002, leg. A.R.; 2 ##, 2 $$, Ay-Magromsy River Basin, Tenuiphantes alacris (Blackwall, 1853) Medvezhyi Ugol cordon, mosses and litter near rill: Plagiomni- um sp., Sphagnum squarrosum, Sph . centrale, Sph . girgensohnii, MATERIAL. 1 $, Surgutskiy Refuge, Ob’ River Basin, Ma- Sph. warnstorfii, Calamagrostis sp., Carex sp. among sparse Salix terikovyi Pasl Channel. Moss and litter in forest at high river sp. and birches, (+3C?), 28.IX.2002, leg. A.R.; 1 $, Ay-Magromsy bank with Abies , Picea , Populus tremula, young Pinus sibirica, River Basin, Medvezhyi Ugol cordon, mosses and litter at Hylocomium splendens, Pleurozium schreberi, Polytrichum com- southern border of sedge-mossy swamp: Carex rostrata, C. spp., mune, Majanthemum bifolium, Vaccinium vitis-idaea, Lycopodi- Comarum palustre, Equisetum spp., Sphagnum girgensohnii, Sph. um sp., Diphasiastrum sp., Equisetum sylvaticum, Linnaea borea- spp., Plagiomnium sp., Aulacomnium sp., Calamagrostis sp., Men- lis etc., 05.VIII.2000, leg. A.R.; 2 $$, Ob’ River Basin, Materik- yanthes trifoliata etc., among sparse young birches, 04.X.2002, ovyi Pasl Channel. Mosses and litter on bog near glade: leg. A.R.; 2 $$, Ay-Magromsy River Basin, 3 km N of Medvezhyi tussocks with Carex ?globularis , Sphagnum ?girgensohnii , Sph. Ugol cordon, mosses and litter in hummocky with Carex sp., spp., Linnaea borealis , Equisetum sylvaticum , Vaccinium vitis- Filipendula ulmaria , Comarum palustre , Plagiomnium sp., Cli- idaea , Ledum palustre, 06.VIII.2000, leg. A.R.; 1 $, Ob’ River macium dendroides, Sphagnum russowii, Sph. spp. etc., on flood- Basin, Materikovyi Pasl Channel. Mosses and litter under Pinus plain of rill, 03.X.2002, leg. A.R. sibirica and Picea obovata with Hylocomium splendens, Pleuro- 1 #, Tobolsk Field Research Station, mosses and litter and zium schreberi, Linnaea, Vaccinium vitis-idaea, V. myrtillus, Poly- in sweeping on small swamp with Carex spp., Poaceae, Sphag- trichum commune , Majanthemum bifolium , Trientalis europaea, num girgensohnii , Sph . squarrosum , Sph. ?riparium , Sph. ?balti- Lycopodium sp., Diphasiastrum sp., Equisetum sylvaticum , E. cum, Sph. centrale etc., 20.IX.2003, leg. A.R. ?pratense etc., 12.VIII.2000, leg. A.R. DISTRIBUTION. Europe, the Caucasus, Middle Asia. 1 $, Yuganskiy Reserve, Nyogus’yakh River, cordon Bisarki- In Siberia known from the Urals eastward to Yenisey River. na. Mosses and litter on slope near parched rill about cordon: Registered also in Sakhalin and Japan. Abies , Picea , Betula, Sorbus , Hylocomium splendens , Pleurozium schreberi , Ptilium , Maianthemum , Trientalis , Linnaea , Equisetum sylvaticum , Polytrichum commune , Oxalis etc., 31.X.1998, leg. Tapinocyba insecta (L. Koch, 1869) A.R.; 1 $, right confluent of Bolshoy Yugan River, 3 km SW of cordon Kamennyi. Steep loamy river bank: Carex spp., Gramineae, MATERIAL. 3 $$, Tobolsk Field Research Station, mosses sparse Filipendula ulmaria , Vicia sp., Veronica ?longifolia etc., and litter under Betula, Pinus sibirica, Alnus, Abies with Carex 21.VIII.1999, leg. A.R.; 1 #, 1 $, Malyi Yugan River Basin, 3–5 globularis , Oxalis acetosella , Linnaea borealis , Delphinium sp., km SW of cordon at Kol-Kotchen-Yagun River, near lake. Moss Maianthemum bifolium, Pyrola sp., Rubus saxatilis, sparse Pleuro- and litter under Pinus sibirica , P. sylvestris, young Abies with zium schreberi etc., on gentle slope near Varpak River, 22.IX.2003, Hylocomium splendens, Pleurozium schreberi, Dicranum sp., Vac- leg. A.R.; 2 $$, Tyumen Area, Uvatskiy District, 10 km S of cinium myrtillus, V . vitis-idaea, Linnaea borealis, sparse Ledum Gornoslinkino, Tobolsk Field Research Station, mosses and on low knoll, 09.IX.1999, leg. A.R.; 4 $$, Vuya-Yany River Basin litter under Pinus sylvestris, P. sibirica, Picea, young Abies with near Ay-Vuya-Yany River mouth (2 km E of cordon). Mosses Ledum palustre , Vaccinium vitis-idaea , V . myrtillus, Poaceae, and litter under Picea obovata, Pinus sibirica, P. sylvestris, Betula Carex globularis, Linnaea borealis, Pleurozium schreberi, Hyloco- on flood-plain of rill with Pleurozium schreberi , Hylocomium mium splendens , Dicranum polysetum etc., on upper part of splendens, Sphagnum girgensohnii, Polytrichum commune, Equi- slope, 02.X.2003, leg. A.R.; 2 ##, 6 $$, Tobolsk Field Research setum sylvaticum, Carex ?globularis, Linnaea borealis, Vaccinium Station, in litter under Pinus sibirica, Picea, Betula, Abies, Tilia, vitis-idaea, Oxalis acetosella etc., 21.VIII.2000, leg. A.R.; 1 #, 2 Populus tremula with Lonicera sp., Carex globularis , Oxalis $$, Nyogus’yakh River near Kogontchina-2 field research sta- acetosella , Pyrola sp., Delphinium sp., Lathyrus sp., Equisetum tion. Mosses and litter under Betula, Abies sibirica, Picea obova- sylvaticum etc., on slope, 20.IX.2003, leg. A.R.; 1 #, Tobolsk ta, Pinus sibirica with Hylocomium splendens, Linnaea borealis, Field Research Station, mosses and litter in forest with Abies, Oxalis acetosella , Majanthemum bifolium , Pyrola sp., Trientalis Picea , Betula , Carex globularis , Calamagrostis sp., Equisetum europaea, Equisetum pratense, Eq. sylvaticum etc., on 1st fluvial sylvaticum, Pyrola sp., Maianthemum bifolium, Linnaea borealis, terrace above flood-plain, 29.VIII.2000, leg. A.R.; 3 ##, 2 $$, Oxalis acetosella, Solidago sp., Lathyrus sp., Lonicera sp., Hyloco- near S border of buffer area of Yuganskiy Reserve, Kolynlor mium splendens, Pleurozium schreberi, Dicranum polysetum etc., Lake. Lake shore: Carex spp., Gramineae, Sphagnum spp. etc., 13.IX.2003, leg. A.R.; 1 #, 1 $, Tobolsk Field Research Station, 29.VIII.2001, leg. A.R.; 5 ##, Ay-Magromsy River Basin, Med- mosses and litter under Betula with Carex globularis, Pleuro- vezhyi Ugol cordon, mosses and litter under Pinus sylvestris, P. 76 A.V. Tanasevitch sibirica , Picea obovata , Betula with Vaccinium vitis-idaea , V. (shaking off sedges and Gramineae), 07.IX.2000, leg. A.R.; 1 $, myrtillus, Pleurozium schreberi, Hylocomium splendens, Dicranum Bolshoy Yugan River near Kamennyi cordon, swamped birch polysetum , Sphagnum ?warnstorfii , Linnaea borealis , Equisetum forest with Sphagnum spp., Carex sp., Gramineae, Ledum palus- sylvaticum etc., under aspen trunk, and under mosses, lichens, tre etc., 15.VIII.2002, leg. A.R.; 1 $, Ay-Magromsy River Basin, bark scales on bases of pine trees, 18.IX.2002, leg. A.R.; 2 $$, Medvezhyi Ugol cordon, mosses and litter at rill bank and on Ay-Magromsy River Basin, Medvezhyi Ugol cordon, mosses and flood-plain of rill: Calamagrostis sp., Ribes spp., Rosa sp., Filipen- litter among Abies, Picea and Betula on gentle slope near SW dula ulmaria , Matteuccia struthiopteris , Equisetum sylvaticum, edge of sedge-mossy swamp: Ledum palustre , Vaccinium vitis- Sphagnum squarrosum, Sph. girgensohnii, Sph. spp., Plagiomnium idaea, Hylocomium splendens, Pleurozium schreberi, Polytrichum sp. etc., 20.IX.2002, leg. A.R. commune, Sphagnum ?russowii, Sph. spp. etc., (+3C?), 28.IX.2002, 1 #, Tobolsk Field Research Station, mosses and litter leg. A.R.; 1 $, Ay-Magromsy River Basin, Medvezhyi Ugol under Betula, Pinus sibirica, Abies with Carex globularis, Linnaea cordon, mosses and litter in flood-plain afforested sedge hum- borealis, Maianthemum bifolium, Vaccinium vitis-idaea, V. myrtil- mocky and on flood-plain of rill with Filipendula ulmaria, Ribes lus , Equisetum sylvaticum , Hylocomium splendens , Pleurozium spp., Comarum palustre, Equisetum sylvaticum, Plagiomnium sp., schreberi, Dicranum polysetum, Sphagnum girgensohnii, Sph. rus- Climacium dendroides , Carex sp., Calamagrostis sp., Sphagnum sowii , Sph . warnstorfii , Lycopodium sp., Diplazium sibiricum, squarrosum , Sph. spp. etc., (+4C?), 01.X.2002, leg. A.R.; 2 $$, Oxalis acetosella, Rubus idaeus, R. saxatilis etc., 24.IX.2003, leg. Malyi Yugan River, near cordon below Lyarykni River mouth, A.R.; 1 $, mosses and litter in swampy birch forest with Pinus mosses and litter in forest near river bank: Pleurozium schreberi, sylvestris , Ledum palustre , Vaccinium uliginosum , Carex globu- Hylocomium splendens, Dicranum polysetum, sparse Polytrichum laris , Sphagnum girgensohnii , Sph. ?russowii , Sph. spp., Polytri- commune, spots of Sphagnum girgensohnii , Linnaea borealis, chum commune, P. strictum, Pleurozium shreberi, ?Aulacomnium Vaccinium vitis-idaea, Equisetum sylvaticum, Majanthemum bifo- sp., Climacium dendroides etc., 30.IX.2003, leg. A.R. lium, Carex globularis, Rubus saxatilis, Trientalis europaea, Poaceae, 3 ##, 8 $$, Luginetsky, Abies, Picea, Betula forest, in moss, Oxalis acetosella etc., under Pinus sibirica , P . sylvestris , Abies, 21–28.VIII.1998, leg. A.T.; 1 $, Picea, Abies & Betula forest, in Picea, Betula, Populus tremula, 18.VIII.2003, leg. A.R. moss, 26.VIII.1998, leg. A.T. 2 $$, Tobolsk Field Research Station, in litter under Pinus 1 #, Tyumen, VI.2000, leg. U. sibirica, Picea, Betula, Abies, Tilia, Populus tremula with Lonicera DISTRIBUTION. Widespread in Europe, in Siberia sp., Carex globularis , Oxalis acetosella, Pyrola sp., Delphinium known from the Urals eastward to Yenisey River. sp., Lathyrus sp., Equisetum sylvaticum etc., on slope, 20.IX.2003, leg. A.R. 1 $, Luginetsky, Picea & Betula forest, in moss, 28.VIII.1998, Tenuiphantes mengei (Kulczynski, 1887) leg. A.T.; 6 ##, 11 $$, Abies, Picea & Betula forest, in grass, 26.VIII.1998, leg. A.T.; 4 ##, swampy spruce (Picea) forest, in MATERIAL. 2 $$, Surgutskiy Refuge, Ob’ River Basin, moss, 25.VIII.1998, leg. A.T.; 1 #, 2 $$, Picea, Abies & Betula Materikovyi Pasl Channel. Moss and litter in forest at high forest, in moss, 26.VIII.1998, leg. A.T. river bank with Abies , Picea , Populus tremula, young Pinus 2 $$, Samotlor, Populus forest, under Ledum, in moss, Aug. sibirica , Hylocomium splendens , Pleurozium schreberi , Polytri- 1999, A.T. leg.; 1 #, Populus & Pinus forest, in moss, Aug. 1999, chum commune , Majanthemum bifolium , Vaccinium vitis-idaea, leg. A.T. Lycopodium sp., Diphasiastrum sp., Equisetum sylvaticum , Lin- 1 $, Noyabrsky, Picea wood, moss & lichen, 16.VIII.2000, naea borealis etc., 05.VIII.2000, leg. A.R.; 1 $, Ob’ River Basin, leg. A.T. Materikovyi Pasl Channel, 2 km S of cordon. Mosses and litter 1 $, Tyumen, VI.2000, leg. U. in forest with Pinus sibirica , Populus tremula , Picea obovata, DISTRIBUTION. Widespread in Europe; in Siberia Pinus sylvestris, Sorbus sibirica, Hylocomium splendens, Pleuro- known from the Urals to Cisokhotia, Kamchatka; through zium schreberi, Dicranum sp., Polytrichum commune, Lycopodi- the mountains of South Siberia via the Lake Baikal region um sp., Diphasiastrum sp., Diplazium sibiricum, Vaccinium vitis- eastward to the southern part of Khabarovsk Prov., Mari- idaea, V. myrtillus, Majanthemum bifolium, Trientalis europaea, Equisetum sylvaticum, Ledum palustre etc., 09.VIII.2000, leg. A.R. time Prov.; known also in Sakhalin. This is the first record 1 $, 10–11 km S of Gornoslinkino, steep right bank of in West Siberia. Irtysh River up-stream of Tobolsk Field Research Station, small mosses and litter among Tussilago farfara on clay and loam, Tenuiphantes cristatus (Menge, 1866) 03.X.2003, leg. A.R. 1 #, 2 $$, Luginetsky, Abies, Picea, Betula forest, in moss, 1996 Lepthyphantes cristatus, Esyunin, Ekosistemy Srednego VIII.1998, leg. A.T.; 1 $ , Picea & Betula forest, in moss, Priob’ya, 1, p. 70. 21.VIII.1998, leg. A.T. 1 #, 2 $$, Samotlor, Betula forest, glade, in grass, Aug. MATERIAL. 1 $, Surgutskiy Refuge, Ob’ River Basin, Ma- 1999, leg. A.T. terikovyi Pasl Channel, 2 km S of cordon. Mosses and litter on 1#, 3 $$, Tyumen, VI.2000, leg. U. swamp with Sphagnum spp., Carex spp., Eriophorum sp., Ledum, DISTRIBUTION. Throughout the Palaearctic. This is Betula ?rotundifolia, Aulacomnium sp., Hypnum sp., Polytrichum the first record in West Siberia. sp., sparse Pinus sylvestris , Betula sp., Populus tremula etc., 09.VIII.2000, leg. A.R. Tenuiphantes nigriventris (L.Koch, 1879) 1 $, Yuganskiy Reserve, Nyogus’yakh River, cordon Bisarki- na. Parching rill near cordon: mosses and litter in rill-bed and by banks (Abies , Picea , Salix, Padus , Betula, Populus tremula, 1996 Lepthyphantes nigriventris, Esyunin, Ekosistemy Sred- Linnaea , Trientalis , Oxalis , Polytrichum commune , Carex spp., nego Priob’ya, 1, p. 70. Equisetum sylvaticum , Sphagnum ?riparium , Sph. ?girgensohnii etc.), 22.X.1998, leg. A.R.; 1 $, Vuya-Yany River Basin near Ay- MATERIAL. 2 ##, 2 $$, Yuganskiy Reserve, Nyogus’yakh Vuya-Yany River mouth (2 km E of cordon). Mosses and litter River, cordon Bisarkina. Mosses and litter on slope (from rill- under Picea obovata, Pinus sibirica, P. sylvestris, Betula on flood- bed to crest) near cordon: Abies , Picea , Pinus sibirica , Betula, plain of rill with Pleurozium schreberi , Hylocomium splendens, Populus tremula , Sorbus , Vaccinium vitis-idaea , V. myrtillus, Sphagnum girgensohnii, Polytrichum commune, Equisetum sylvati- Equisetum sylvaticum, Pleurozium schreberi, Hylocomium splen- cum , Carex ?globularis , Linnaea borealis , Vaccinium vitis-idaea, dens, Maianthemum, Trientalis, Carex ?globularis, graminoids etc., Oxalis acetosella etc., 21.VIII.2000, leg. A.R.; 2 $$, Nyogus’yakh 22.X.1998, leg. A.R.; 2 $$, Nyogus’yakh River, cordon Bisarkina. River near Kogontchina-2 field research station. Clayish river Parching rill near cordon: mosses and litter in rill-bed and by bank: Carex spp., Equisetum sp., Gramineae, Mentha sp. etc., banks (Carex spp., Equisetum sylvaticum, Sphagnum ?riparium, Linyphiid spiders of the West Siberian Plain 77

Sph. ?girgensohnii , Polytrichum commune , Filipendula ulmaria, MATERIAL. 1 #, Yuganskiy Reserve, Nyogus’yakh River, Gramineae, Veratrum , Linnaea , Maianthemum , Trientalis , To- cordon Bisarkina. Mosses and litter in flood-plane forest and at menthypnum sp., Plagiomnium sp. etc.), 31.X.1998, leg. A.R. natural levee with Abies , Picea , Pinus sibirica , Betula, Oxalis, Ca. 200 ## & $$, Tomsk, Abies forest, in grass, litter and Equisetum sylvaticum , Eq . pratense , Maianthemum , Trientalis, moss, 15–16.VIII.1998, leg. A.T. Linnaea , Hylocomium splendens , Pleurozium schreberi, placely Ca. 30 ## & $$, Nefteyugansk, mixed forests: Abies, Pinus Sphagnum sp. (girgensohnii or russowii) etc., 24.X.1998, leg. A.R. sibirica, Picea, Betula with Equisetum, Vaccinium spp., Empetrum, 1 #, Tyumen, VI.2000, leg. U. mosses, VIII.2001, leg. A.T. DISTRIBUTION. Fennoscandia; in Siberia known from DISTRIBUTION. Northern Europe; in Siberia distribut- the Urals eastward to East Siberia, the Kurile Islands and ed from the Urals to Cisokhotia, Kamchatka, Commander Sakhalin; through the mountains of South Siberia via the Islands, Kurile Islands and Sakhalin; from eastern Kazakh- Lake Baikal region eastward to Khabarovsk and Maritime stan through the mountains of South Siberia via the Lake provinces. Baikal region eastward to Khabarovsk Prov., Maritime Prov. Registered also in China and Japan. In the Nearctic wide- Tibioplus diversus (L. Koch, 1879) spread over northern Canada. 1996 Tibioplus diversus, Esyunin, Ekosistemy Srednego Tenuiphantes tenebricola (Wider, 1834) Priob’ya, 1, p. 71.

1996 Lepthyphantes tenebricola, Esyunin, Ekosistemy Sred- MATERIAL. 1 $, Surgutskiy Refuge, Ob’ River Basin, Ma- nego Priob’ya, 1, p. 71. terikovyi Pasl Channel. Litter between Gramineae and Equise- tum spp. under bushes and young Populus tremula at small MATERIAL. 1 $, Tobolsk Field Research Station, mosses river bank, 05.VIII.2000, leg. A.R.; 4 $$, Ob’ River Basin, and litter in forest with Abies, Picea, Betula, Carex globularis, Materikovyi Pasl Channel. Moss and litter in forest with Abies, Calamagrostis sp., Equisetum sylvaticum , Pyrola sp., Maianthe- Picea, Populus tremula, Betula, young Pinus sibirica, Pleurozium mum bifolium, Linnaea borealis, Oxalis acetosella, Solidago sp., schreberi , Hylocomium splendens , Dicranum sp., Polytrichum Lathyrus sp., Lonicera sp., Hylocomium splendens , Pleurozium commune, Equisetum sylvaticum, Linnaea borealis, Oxalis aceto- schreberi , Dicranum polysetum etc., 13.IX.2003, leg. A.R.; 1 $, sella, Trientalis europaea etc., 07.VIII.2000, leg. A.R.; 2 $$, Ob’ mosses and litter under Betula with Equisetum sylvaticum, River Basin, Materikovyi Pasl Channel, 2 km S of cordon. Mosses and litter in forest with Pinus sibirica, Populus tremula, Pyrola sp., Lathyrus sp. etc., on gentle slope near crest of Spartakovskaya Mt., 06.VI.2004, leg. A.R. Picea obovata, Pinus sylvestris, Sorbus sibirica, Hylocomium splen- 4 ##, 9 $$, Tomsk, Abies forest, in moss and litter, 15– dens, Pleurozium schreberi, Dicranum sp., Polytrichum commune, 16.VIII.1998, leg. A.T. Lycopodium sp., Diphasiastrum sp., Diplazium sibiricum, Vaccini- 1 $, Tyumen Area, Nefteyugansk, mixed forests: Abies, Pinus um vitis-idaea , V. myrtillus , Majanthemum bifolium , Trientalis sibirica, Picea, Betula with Equisetum, Vaccinium spp., Empetrum, europaea, Equisetum sylvaticum, Ledum palustre etc., 09.VIII.2000, mosses, VIII.2001, leg. A.T. leg. A.R.; 3 ##, 2 $$, Ob’ River Basin, Materikovyi Pasl 2 $$, Tyumen, VI.2000, leg. U. Channel. Mosses and litter under Pinus sibirica and Picea DISTRIBUTION. Widespread in Europe, known from the obovata with Hylocomium splendens, Pleurozium schreberi, Lin- naea, Vaccinium vitis-idaea, V. myrtillus, Polytrichum commune, Urals and West Siberia. This is the first record in West Siberia. Majanthemum bifolium , Trientalis europaea , Lycopodium sp., Diphasiastrum sp., Equisetum sylvaticum , E. ?pratense etc., Thyreosthenius parasiticus (Westring, 1851) 12.VIII.2000, leg. A.R. 1 $, Yuganskiy Reserve, Nyogus’yakh River, cordon Bisarki- MATERIAL. 1 $, near S border of buffer area of Yuganskiy na. Mosses and litter on slope (from rill-bed to crest) near Reserve, Kolynlor Lake. Mosses and litter under Pinus sylvestris, cordon: Abies , Picea , Pinus sibirica , Betula, Populus tremula, Betula, Pinus sibirica with Pleurozium schreberi, Ledum palustre Sorbus, Vaccinium vitis-idaea, V. myrtillus, Equisetum sylvaticum, etc., between hummocks of Sphagnum spp. near the lake. Pleurozium schreberi, Hylocomium splendens, Maianthemum, Tri- 05.IX.2001, leg. A.R. entalis, Carex ?globularis, graminoids etc., 22.X.1998, leg. A.R.; 2, DISTRIBUTION. Northern Europe, the Caucasus; in Malyi Yugan River Basin, 3–5 km SW of cordon at Kol- Siberia known from the Urals eastward to Kamchatka, the Kotchen-Yagun River, near lake. Moss and litter under Pinus Kurile Islands and Sakhalin. In the mountains of South sibirica , P . sylvestris, young Abies with Hylocomium splendens, Pleurozium schreberi, Dicranum sp., Vaccinium myrtillus, V. vitis- Siberia recorded in Altai Mts. Known also in Mongolia. In idaea, Linnaea borealis, sparse Ledum on low knoll, 09.IX.1999, the Nearctic from Ontario eastward to Newfoundland and leg. A.R.; 1 #, 1 $, Malyi Yugan River Basin, 3–5 km SW of from Washington State to Connecticut. This is the first cordon at Kol-Kotchen-Yagun River, Moss and litter under record in West Siberia. Picea and Abies with Hylocomium splendens, Pleurozium schreberi, Polytrichum commune, Linnaea borealis, sparse Equisetum sylvat- Thyreosthenius biovatus (O. Pickard-Cambridge, icum , Maianthemum bifolium , Trientalis europaea , Vaccinium vitis-idaea, 12.IX.1999, leg. A.R.; 1 $, Kol-Kotchen-Yagun River 1875) (confluent of Malyi Yugan River) E of cordon. Loamy river bank with Carex spp., Gramineae, Equisetum spp., small Rosa 1996 Thyreosthenius biovatus, Esyunin, Ekosistemy Srednego sp. & Salix sp. etc., 16.IX.2001, leg. A.R.; 1 $, Kol-Kotchen- Priob’ya, 1, p. 73. Yagun River Basin (confluent of Malyi Yugan River), lake near cordon. Mosses and litter under Pinus sylvestris, P. sibirica and DISTRIBUTION. Northern Europe, in Siberia known from elfin wood of Abies sibirica with Vaccinium vitis-idaea , V. the Urals eastward to East Siberia, Cisokhotia. In the moun- myrtillus , Linnaea borealis , Pleurozium schreberi , Hylocomium tains of South Siberia registered from Altai Mts and Tuva. splendens, Dicranum sp., Lycopodium sp., sparse Ledum palustre et al., in forest on hill crest NW of lake, 01.X.2001, leg. A.R.; 2 $$, right riverside of Bolshoy Yugan River near Kamennyi Tibioploides arcuatus (Tullgren, 1955) cordon. Mosses and litter in pine forest with Cladonia spp., Vaccinium vitis-idaea , Pleurozium schreberi , Dicranum ?polyse- 1996 Tibioplus arcuatus, Esyunin, Ekosistemy Srednego tum, sparse Ledum palustre etc., 18.VIII.2002, leg. A.R.; 1 #, Ay- Priob’ya, 1, p. 71. Magromsy River Basin, Medvezhyi Ugol cordon, mosses and 78 A.V. Tanasevitch litter under Pinus sylvestris, P. sibirica, Picea obovata, Betula with Walckenaeria alticeps (Denis, 1952) Vaccinium vitis-idaea, V. myrtillus, Pleurozium schreberi, Hyloco- mium splendens , Dicranum polysetum , Sphagnum ?warnstorfii, Linnaea borealis, Equisetum sylvaticum etc., under aspen trunk, MATERIAL. 1 $, Yuganskiy Reserve, Bolshoy Yugan River, and under mosses, lichens, bark scales on bases of pine trees, near cordon Kamennyi. Waterlogged forest with Picea , Abies, 18.IX.2002, leg. A.R.; 1 #, 3 $$, Ay-Magromsy River Basin, Pinus sylvestris, young Pinus sibirica, aspen, Betula, Ledum, Medvezhyi Ugol cordon, mosses and litter under Pinus sylves- Hylocomium splendens , Pleurozium schreberi , Sphagnum spp., tris, Picea obovata, Pinus sibirica with Ledum palustre, Vaccinium Polytrichum spp., Carex spp., Gramineae, Linnaea borealis, Vac- vitis-idaea , Linnaea borealis , Pleurozium schreberi , Dicranum cinium vitis-idaea , V. myrtillus, 24.VIII.1999, leg. A.R.; 1 #, polysetum, (+4C?), 29.IX.2002, leg. A.R. Nyogus’yakh River near Kogontchina-2 field research station. 1 #, 3 $$, Tobolsk Field Research Station, mosses and Mosses and litter on swamp with Pinus sylvestris , Betula, litter under Betula , Pinus sibirica , Alnus , Abies with Carex Ledum palustre, Andromeda polifolia, Chamaedaphne calycula- globularis, Oxalis acetosella, Linnaea borealis, Delphinium sp., ta, Vaccinium uliginosum, Eriophorum sp., Oxycoccus palustris, Maianthemum bifolium, Pyrola sp., Rubus saxatilis, sparse Pleu- Sphagnum fuscum, Sph. magellanicum, Sph. ?angustifolium, Sph. rozium schreberi etc., on gentle slope near Varpak River, spp., Rubus chamaemorus etc., 31.VIII.2000, leg. A.R.; 2 $$, 22.IX.2003, leg. A.R.; 2 ##, 4 $$, mosses and litter under near S border of buffer area of Yuganskiy Reserve, Kolynlor Pinus sylvestris, P. sibirica, Picea, young Abies with Ledum Lake. Lake shore: Carex spp., Gramineae, Sphagnum spp. etc., palustre , Vaccinium vitis-idaea , V . myrtillus, Poaceae, Carex 29.VIII.2001, leg. A.R.; 1 $, near S border of buffer area of globularis, Linnaea borealis, Pleurozium schreberi, Hylocomium Yuganskiy Reserve, Kolynlor Lake. Mosses and litter by lake splendens, Dicranum polysetum etc., on upper part of slope, shore: Carex spp., Gramineae, Sphagnum girgensohnii , Sph. 02.X.2003, leg. A.R.; 4 $$, Tobolsk Field Research Station, in squarrosum, Sph. spp. sparse Betula, Salix sp. etc., 05.IX.2001, litter under Pinus sibirica , Picea, Betula , Abies, Tilia , Populus leg. A.R.; 1 $, Kol-Kotchen-Yagun River (confluent of Malyi tremula with Lonicera sp., Carex globularis, Oxalis acetosella, Yugan River) E of cordon. Loamy river bank with Carex spp., Pyrola sp., Delphinium sp., Lathyrus sp., Equisetum sylvaticum Gramineae, Equisetum spp., small Rosa sp. & Salix sp. etc., etc., on slope, 20.IX.2003, leg. A.R.; 1 #, mosses and litter 16.IX.2001, leg. A.R.; 1 #, Bolshoy Yugan River near Kamen- under Betula, Pinus sibirica, Abies with Carex globularis, Lin- nyi cordon, swamped birch forest with Sphagnum spp., Carex naea borealis, Maianthemum bifolium, Vaccinium vitis-idaea, V. sp., Gramineae, Ledum palustre etc., 15.VIII.2002, leg. A.R.; 1 $, myrtillus, Equisetum sylvaticum, Hylocomium splendens, Pleuro- Ay-Magromsy River Basin, Medvezhyi Ugol cordon, mosses zium schreberi , Dicranum polysetum , Sphagnum girgensohnii, and litter at rill bank: Carex rhynchophysa, Sphagnum spp., Sph . russowii, Sph . warnstorfii, Lycopodium sp., Diplazium si- Plagiomnium sp. etc., 16.IX.2002, leg. A.R.; 1 #, Ay-Magromsy biricum , Oxalis acetosella , Rubus idaeus , R . saxatilis etc., River Basin, Medvezhyi Ugol cordon, mosses and litter in 24.IX.2003, leg. A.R. tussocks of Carex sp. with Sphagnum squarrosum, Sph . cen- 1 #, 2 $$, Luginetsky, swampy spruce (Picea) forest, in trale, Sph. girgensohnii, Sph. ?russowii, Plagiomnium sp. etc., and moss, 25.VIII.1998, leg. A.T.; 1 #, Picea, Abies & Betula forest, in also sweeping on Carex rhynchophysa among swampy birch moss, 26.VIII.1998, leg. A.T. forest at SW border of the reserve, 21.IX.2002, leg. A.R.; 2 $$, 1 #, Noyabrsky, Picea wood, moss & lichen, 16.VIII.2000, Ay-Magromsy River Basin, Medvezhyi Ugol cordon, mosses leg. A.T. and litter at the foot of slope near border of open swamp: DISTRIBUTION. Throughout the Holarctic. Pinus sylvestris, P. sibirica, Picea obovata, Juniperus communis, Ledum palustre , Chamaedaphne calyculata , Carex globularis, Pleurozium schreberi , Dicranum polysetum , Polytrichum spp., Trematocephalus cristatus (Wider, 1834) Sphagnum spp., Equisetum sylvaticum, Eq. pratense, Vaccinium vitis-idaea etc., 25.IX.2002, leg. A.R.; 1 $, Ay-Magromsy River MATERIAL. 2 $$, 11 km S of Gornoslinkino, clayish right Basin, Medvezhyi Ugol cordon, mosses and litter near rill: bank of Irtysh River (narrow fold at rill mouth) up-stream of Plagiomnium sp., Sphagnum squarrosum , Sph . centrale , Sph. Tobolsk Field Research Station, in leaf litter and sweeping girgensohnii, Sph. warnstorfii, Calamagrostis sp., Carex sp. among under Salix sp. with small true mosses, Marchantia sp., Equise- sparse Salix sp. and birches, (+3C?), 28.IX.2002, leg. A.R.; 1 $, tum sp., Carex sp., Calamagrostis sp. etc., 11.VI.2004, leg. A.R. Ay-Magromsy River Basin, 1 km N of Medvezhyi Ugol DISTRIBUTION. Widespread in Europe, known in the cordon, mosses and litter on flood-plain of rill with Calama- Caucasus and the Urals. In Siberia this species has hitherto grostis sp., Filipendula ulmaria, Spiraea sp., Equisetum sylvati- cum, Plagiomnium sp., Sphagnum spp. etc., (+5C?), 05.X.2002, been known only from the mountains of South Siberia (Altai leg. A.R. Mts, Tuva and Sayan), the southern part of Khabarovsk 1 $, Tobolsk Field Research Station, mosses and litter Prov. and in Maritime Prov. Registered also from China. among sparse Salix spp., Betula, Pinus sylvestris with tussocks of This is the first record in West Siberia. Carex spp., Poaceae, Lythrum sp., Filipendula ulmaria, Climacium dendroides, isolated spots of Sphagnum squarrosum, Sph. sp. etc., Trichoncus vasconicus Denis, 1944 on swamped flood-plain of left bank of Irtysh River, 29.IX.2003, leg. A.R.; 1 #, mosses and litter in swampy birch forest with Pinus sylvestris , Ledum palustre , Vaccinium uliginosum , Carex MATERIAL. 1 #, Tyumen, VI.2000, leg. U. globularis, Sphagnum girgensohnii, Sph. ?russowii, Sph. spp., Poly- DISTRIBUTION. Southern and Western Europe, the trichum commune, P. strictum, Pleurozium schreberi, ?Aulacomni- Caucasus, the Urals, West Siberia, eastern Kazakhstan, Tuva, um sp., Climacium dendroides etc., 30.IX.2003, leg. A.R. the Lake Baikal region and East Siberia. This is the first 2 ##, 2 $$, Luginetsky, Picea& Betula forest, in moss, 22– record in West Siberia. 28.VIII.1998, leg. A.T.; 1 $, swampy spruce (Picea) forest, in moss, 25.VIII.1998, leg. A.T.; 1 $, Picea, Abies & Betula forest, in moss, 26.VIII.1998, leg. A.T. Wabasso quaestio (Chamberlin, 1948) 1 $, Samotlor, Pinus forest, in moss and lichen, Aug. 1999, leg. A.T.; 1 $, Populus forest, under Ledum, in moss, Aug. 1999, MATERIAL. 4 ##, 7 $$, Noyabrsky, Salix bushes along A.T. leg.; 1 $, Populus & Pinus forest, in moss, Aug. 1999, leg. brook, litter, 15.VIII.2000, leg. A.T. A.T. DISTRIBUTION. Siberia: from the Urals eastward to 1 $, Tyumen, VI.2000, leg. U. Yenisey River, in the mountains of South Siberia registered DISTRIBUTION. Europe, in Siberia known from the from Tuva and Sayan. In the Nearctic, from Manitoba to Urals eastward to Yenisey River. Registered from Altai Mts. Quebec. This is the first record in West Siberia. Linyphiid spiders of the West Siberian Plain 79

Walckenaeria antica (Wider, 1834) 2 ##, 1 $, Luginetsky, Picea & Betula forest, in moss, 22– 28.VIII.1998, leg. A.T.; 1 #, 1 $, Picea, Populus & Betula forest, 1996 Walckenaeria antica, Esyunin, Ekosistemy Srednego in litter, 22–28.VIII.1998, leg. A.T.; 1 $, Picea & Betula forest, Priob’ya, 1, p. 73. (revised). in moss, 21.VIII.1998, leg. A.T. DISTRIBUTION. Europe, the Caucasus, eastern Kaza- DISTRIBUTION. Europe, the Caucasus and Middle Asia; khstan; in Siberia known from the Urals eastward to Yenisey in Siberia known from the Urals eastward to Yenisey River. River; in the mountains of South Siberia recorded in Tuva Distributed in the mountains of South Siberia: Altai Mts, and the Lake Baikal region. Tuva and Sayan; known also in China. Kamchatka (?), Japan (?), Korea (?). Walckenaeria cuspidata Blackwall, 1833

Walckenaeria atrotibialis (O. Pickard-Cambridge, MATERIAL. 1 $, near S border of buffer area of Yuganskiy Reserve, Kolynlor Lake. Lake shore: Carex spp., Gramineae, 1878) Sphagnum spp. etc., 29.VIII.2001, leg. A.R.; 1 $, Kolynlor Lake. Lake shore: Carex spp., Gramineae, Sphagnum girgensohnii, Sph. 1996 Walckenaeria atrotibialis, Esyunin, Ekosistemy Sred- squarrosum, Sph. spp. sparse Betula, Salix sp. etc., 04.IX.2001, leg. nego Priob’ya, 1, p. 73. A.R.; 1 #, rill between Kolynlor Lake and Koimlor (Krimlor) Lake. Rill bank near source: tussocks with Carex spp. and MATERIAL. 1 $, Yuganskiy Reserve, Nyogus’yakh River, Gramineae, Comarum palustre, Sphagnum squarrosum, Sph. gir- cordon Bisarkina. Moss and litter on swamp amid flood plain gensohnii, Sph. spp., Plagiomnium sp. etc., 04.IX.2001, leg. A.R. forest near foot of slope: Menyanthes trifoliata, Equisetum spp., 1 $, Luginetsky, Picea, Abies & Betula forest, in moss, Sphagnum squarrosum (sparse), Sph. ?centrale , Sph. spp., Nar- 26.VIII.1998, leg. A.T. dosmia frigida , Carex spp., Gramineae, Salix sp., Comarum 2 $$, Tyumen, VI.2000, leg. U. palustre, Filipendula ulmaria, ?Tomenthypnum sp., Plagiomnium DISTRIBUTION. Europe, in Siberia known from the sp. etc., 27.X.1998, leg. A.R.; 1 #, Malyi Yugan River, cordon Urals eastward to Cisokhotia, Kamchatka, the Commander below Lyarykni River mouth, open swamp with tussocks of Islands; recorded in Sakhalin, the Kurile Islands and Mari- Carex spp. and Calamagrostis sp. with Comarum palustre, Salix time Prov. In the mountains of South Siberia known from sp., Sphagnum squarrosum , Sph. spp., ?Aulacomnium sp. etc., Altai Mts and Sayan. between sparse young Betula, 17.VIII.2003, leg. A.R.; 1 #, Malyi Yugan River, cordon below Lyarykni River mouth, open swamp with tussocks of Carex spp. and Calamagrostis sp. with Comar- Walckenaeria furcillata (Menge, 1869) um palustre, Salix sp., Sphagnum squarrosum, Sph. spp., ?Aula- comnium sp. etc., between sparse young Betula, 22.VIII.2003, MATERIAL. 1 #, Yuganskiy Reserve, Vuya-Yany River leg. A.R.; 1 $, Malyi Yugan River, near cordon below Maalyakh near Ay-Vuya-Yany River mouth. Mosses and litter on swamp: River mouth, mosses and litter in forest with Pinus sibirica, P. Pinus sylvestris , Ledum palustre , Andromeda polifolia, sylvestris, Picea, Betula, Populus tremula, Abies, Equisetum sylvat- Chamaedaphne calyculata , Oxycoccus spp., Sphagnum magel- icum, Linnaea borealis, Vaccinium vitis-idaea, V. myrtillus, Carex lanicum, Sph. ?angustifolium, Eriophorum sp. etc., 27.VIII.2000, globularis, Pleurozium schreberi, Hylocomium splendens, Polytri- leg. A.R. chum commune, sparse spots of Sphagnum girgensohnii and DISTRIBUTION. Europe, the Caucasus, eastern Kaza- Ledum palustre, 20.VIII.2003, leg. A.R. khstan, the Urals and West Siberia. Registered from Japan 1 $, Tobolsk Field Research Station, in litter under Pinus (?). This is the first record in West Siberia. sibirica , Tilia cordata , Betula , Populus tremula , Picea obovata, Abies sibirica with Carex globularis, Stellaria sp., Maianthemum bifolium, Lathyrus sp., Equisetum sylvaticum, Pyrola sp. etc., on Walckenaeria karpinskii (O. Pickard-Cambridge, slope, 06.VI.2004, leg. A.R.; 1 $, Tobolsk Field Research Station, 1873) mosses and litter and in sweeping on small swamp with Carex spp., Poaceae, Sphagnum girgensohnii , Sph . squarrosum , Sph. MATERIAL. 1 $, Yuganskiy Reserve, Nyogus’yakh River, ?riparium, Sph. ?balticum, Sph. centrale etc., 10.VI.2004, leg. A.R.; cordon Bisarkina. Mosses and litter in flood-plane forest and at 1 #, 10–11 km S of Gornoslinkino, right bank of Irtysh River natural levee with Abies , Picea , Pinus sibirica , Betula, Oxalis, up-stream of Tobolsk Field Research Station, leaf litter near Equisetum sylvaticum , Eq . pratense , Maianthemum , Trientalis, top of slope, under Betula, Tilia, Populus tremula with Carex Linnaea , Hylocomium splendens , Pleurozium schreberi, placely globularis, Stellaria sp. etc., 04.VI.2004; leg. A.R. Sphagnum sp. (girgensohnii or russowii) etc., 24.X.1998, leg. A.R.; 2 $$, Luginetsky, Abies, Picea , Betula forest, in moss, 1 $, right confluent of Bolshoy Yugan River, 3 km SW of 26.VIII.1998, leg. A.T. cordon Kamennyi. Moss and litter in flood-plain forest: Picea, 1 $, Noyabrsky, dry Pinus forest, Ledum, Vaccinium vitis- Betula, Abies , Pinus sibirica , Sorbus , Vaccinium vitis-idaea , V. idea , V . uliginosum , Empetrum, moss & lichen (Cladina & myrtillus, Maianthemum bifolium, Linnaea borealis, Hylocomium Cetraria), 13.VIII.2000, leg. A.T. splendens, Pleurozium schreberi, Dicranum sp., Polytrichum com- 1 #, 2 $$, Tyumen, VI.2000, leg. U. mune, 21.VIII.1999, leg. A.R.; 1 #, Nyogus’yakh River near DISTRIBUTION. Europe, the Caucasus, eastern Kaza- Kogontchina-2 field research station. Mosses and litter under khstan and Middle Asia; in Siberia known from the Urals Betula, Abies sibirica, Picea obovata, Pinus sibirica with Hyloco- eastward to Yenisey River. Thoughout the Nearctic. mium splendens , Linnaea borealis , Oxalis acetosella , Majanthe- mum bifolium , Pyrola sp., Trientalis europaea , Equisetum prat- ense , Eq . sylvaticum etc., on 1st fluvial terrace above flood- Walckenaeria cucullata (C.L. Koch, 1836) plain, 29.VIII.2000, leg. A.R.; 1 $, Kol-Kotchen-Yagun River Basin (confluent of Malyi Yugan River), lake near cordon. MATERIAL. 1 #, Yuganskiy Reserve, Ay-Magromsy River Mosses and litter under Pinus sylvestris , P . sibirica and elfin Basin, Medvezhyi Ugol cordon, mosses and litter under Populus wood of Abies sibirica with Vaccinium vitis-idaea, V. myrtillus, tremula, Pinus sibirica, Picea obovata, Pinus sylvestris with Abies Linnaea borealis , Pleurozium schreberi , Hylocomium splendens, thicket, Hylocomium splendens, Pleurozium schreberi, Dicranum Dicranum sp., Lycopodium sp., sparse Ledum palustre et al., in polysetum, Polytrichum commune, Equisetum sylvaticum, Vaccin- forest on hill crest NW of lake, 01.X.2001, leg. A.R. ium vitis-idaea, Linnaea borealis etc., (+3 C, after first snowfall), 2 $$, Luginetsky, Abies, Picea , Betula forest, in moss, 13.IX.2002, leg. A.R. 26.VIII.1998, leg. A.T.; 3 ##, 8 $$, swampy spruce (Picea) 80 A.V. Tanasevitch forest, in moss, 25.VIII.1998, leg. A.T.; 1 #, 2 $$, Picea, Abies & spp., Comarum palustre , Sphagnum spp., Gramineae, Salix sp., Betula forest, in moss, 26.VIII.1998, leg. A.T. sparse Betula, 17.IX.2001, leg. A.R.; 1 $, Kol-Kotchen-Yagun 4 $$, Noyabrsky, dry Pinus forest, Ledum, Vaccinium vitis- River Basin (confluent of Malyi Yugan River), lake near idea , V . uliginosum , Empetrum, in Cladina pads, 10.VIII.2000, cordon. Swampy birch-wilow sparse forest by SE shore of lake: leg. A.T. tussocks of Carex spp. with a touch of Calamagrostis sp., 1 #, 4 $$, Nefteyugansk, mixed forests: Abies, Pinus sibirica, Comarum palustre , Sphagnum squarrosum , Sph . centrale , Sph. Picea, Betula with Equisetum, Vaccinium spp., Empetrum, mosses, spp. etc., as well as mosses and litter between those, 20.IX.2001, VIII.2001, leg. A.T. leg. A.R.; 1 $, Kol-Kotchen-Yagun River (confluent of Malyi 1 $, Tyumen, VI.2000, leg. U. Yugan River) NE of cordon. River bank with Carex spp., DISTRIBUTION. Northern Europe, Spitsbergen; in Si- Gramineae, Filipendula ulmaria, Urtica dioica, Spiraea sp. etc., beria distributed from the Urals eastward to Chukotka, Ci- 23.IX.2001, leg. A.R. sokhotia, Kamchatka; through the mountains of South Sibe- 1 #, 2 $$, Tobolsk Field Research Station, in litter under ria via the Lake Baikal region eastward to Khabarovsk Prov., Salix sp. with Poaceae, Carex sp., Filipendula ulmaria, Lamiaceae Maritime Prov. Registered also from Sakhalin, Mongolia etc., 26.IX.2003, leg. A.R.; 2 $$, near Tobolsk Field Research, willow leaf litter at margin of inundated flood-plain of Varpak and China. Widespread in the northern Nearctic. River, 05.VI.2004, leg. A.R. DISTRIBUTION. Europe, eastern Kazakhstan; in Sibe- Walckenaeria kochi (O. Pickard-Cambridge, 1872) ria known from the Urals eastward to Yenisey River.

MATERIAL. 1 $, near Ugut, Ugutka River Basin. Mosses Walckenaeria korobeinikovi Esyunin et Efimik, and litter at forest with Pinus sylvestris, Betula, Ledum palustre, Vaccinium myrtillus , V. vitis-idaea , Dicranum sp., Pleurozium 1996 schreberi , Hylocomium splendens, underwood of Pinus sibirica etc., 11.X.1998, leg. A.R. 1996 Walckenaeria clavicornis, Esyunin, Ekosistemy Sred- 3 $$, Yuganskiy Reserve, Malyi Yugan River Basin, 3–5 nego Priob’ya, 1, p. 73, revised by Esyunin, pers. comm. km SW of cordon at Kol-Kotchen-Yagun River, near lake. Moss 1996 Walckenaeria holmi, Esyunin, Ekosistemy Srednego and litter at lake shore: sedge tussocks, Gramineae, Comarum Priob’ya, 1, p. 73, revised by Esyunin, pers. comm. palustre , Spiraea sp. et al., 30.VIII.1999, leg. A.R.; 1 $, Malyi Yugan River Basin, 3–5 km SW of cordon at Kol-Kotchen- MATERIAL. 1 #, 3 $$, Surgutskiy Refuge, Ob’ River Basin, Yagun River, near lake. Moss and litter at lake shore (on cape Materikovyi Pasl Channel. Moss and litter in forest with Abies, near hut): Padus , Salix, young Populus tremula, sedge and Picea, Populus tremula, Betula, young Pinus sibirica, Pleurozium graminoid tussocks, Comarum palustre, Equisetum spp., ?Aula- schreberi , Hylocomium splendens , Dicranum sp., Polytrichum comnium sp. et al., 11.IX.1999, leg. A.R.; 1 #, 6 $$, Malyi Yugan commune, Equisetum sylvaticum, Linnaea borealis, Oxalis aceto- River Basin, Kol-Kotchen-Yagun River, 3–4 km S of cordon. sella, Trientalis europaea etc., 07.VIII.2000, leg. A.R. Moss and litter at river bank: Padus , Salix sp., Spiraea spp., 2 $$, Yuganskiy Reserve, Nyogus’yakh River, cordon Bisarki- Filipendula ulmaria , Ribes nigrum , Gallium sp., Carex spp., na. Mosses and litter in flood-plane forest and at natural levee Gramineae, Equisetum spp., ?Aulacomnium sp., Plagiomnium sp., with Abies, Picea, Pinus sibirica, Betula, Oxalis, Equisetum sylvat- Climacium dendroides et al., 13.IX.1999, leg. A.R.; 1 $, Vuya- icum, Eq. pratense, Maianthemum, Trientalis, Linnaea, Hylocomi- Yany River near Ay-Vuya-Yany River mouth. Flood-plain de- um splendens, Pleurozium schreberi, placely Sphagnum sp. (gir- pression: Filipendula ulmaria, Carex sp., Gramineae, Spiraea sp., gensohnii or russowii) etc., 24.X.1998, leg. A.R.; 1 $, right Ribes nigrum , Comarum palustre , Sphagnum squarrosum , Sph. confluent of Bolshoy Yugan River, 3 km SW of cordon girgensohnii, Climacium dendroides, Aulacomnium sp., Plagiomni- Kamennyi. Moss and litter in flood-plain forest: Picea, Betula, um sp. etc., 24.VIII.2000, leg. A.R.; 4 $$, Vuya-Yany River near Abies , Pinus sibirica , Sorbus , Vaccinium vitis-idaea , V. myrtillus, Ay-Vuya-Yany River mouth. Clay river banks near mouth of Maianthemum bifolium, Linnaea borealis, Hylocomium splendens, small left confluent (500 # lower of field research station): Pleurozium schreberi , Dicranum sp., Polytrichum commune, Carex spp., Gramineae, Mentha sp., ?Trollius sp. etc., 25.VIII.2000, 21.VIII.1999, leg. A.R.; 2 $$, Vuya-Yany River near Ay-Vuya- leg. A.R.; 1 #, 1 $, Nyogus’yakh River near Kogontchina-2 field Yany River mouth. Mosses and litter in forest at crest line: research station. River banks near rill mouths: Carex sp., Pinus sibirica, P. sylvestris, Picea obovata, Abies sibirica, Vaccinium Gramineae, Filipendula ulmaria, Salix sp., Padus etc., 03.IX.2000, vitis-idaea , V. myrtillus , Linnaea borealis , Trientalis europaea, leg. A.R.; 2 ##, 4 $$, Nyogus’yakh River Basin near Equisetum sylvaticum, Pleurozium schreberi, Hylocomium splen- Petchpan’yakh River mouth. Mosses and litter on large swamp: dens, Dicranum sp., Diphasiastrum sp., 18.VIII.2000, leg. A.R.; 1 Carex spp., Comarum palustre, Equisetum sp., Nardosmia frigida, $, Vuya-Yany River Basin near Ay-Vuya-Yany River mouth (2 Eriophorum sp., Gramineae, Rumex sp., ?Aulacomnium sp., Plagi- km E of cordon). Mosses and litter under Picea obovata, Pinus omnium sp., Ptilium crista-castrensis, Sphagnum sp., Chamaeneri- sibirica, P. sylvestris, Betula on flood-plain of rill with Pleuro- um angust, Sphagnum ?russowii, Sph. sp., Salix sp. etc., 15.IX.2000, zium schreberi , Hylocomium splendens , Sphagnum girgensohnii, leg. A.R.; 1 $, Bolshoy Yugan River, 6–7 km below Polytrichum commune, Equisetum sylvaticum, Carex ?globularis, Sugmuten’yakh River mouth. Bank of old channel: tussocks Linnaea borealis , Vaccinium vitis-idaea , Oxalis acetosella etc., with Carex spp., Gramineae, small admixture of Filipendula 21.VIII.2000, leg. A.R.; 4 $$, yogus’yakh River near Kogontchi- ulmaria between sparse Salix sp. and Betula, 17.VIII.2001, leg. na-2 field research station. Mosses and litter under Betula, A.R.; 1 $, near S border of buffer area of Yuganskiy Reserve, Abies sibirica , Picea obovata , Pinus sibirica with Hylocomium Koimlor (Krimlor) Lake. Mosses and litter in tussocks between splendens , Linnaea borealis , Oxalis acetosella , Majanthemum sparse Betula and Salix sp. near lake shore: Carex spp., Gramineae, bifolium, Pyrola sp., Trientalis europaea, Equisetum pratense, Eq. Sphagnum squarrosum, Sph. centrale, Sph. girgensohnii, Comarum sylvaticum etc., on 1st fluvial terrace above flood-plain, palustre, sparse Equisetum sp., 02.IX.2001, leg. A.R.; 2 $$, near S 29.VIII.2000, leg. A.R.; 2 $$, Kol-Kotchen-Yagun River Basin border of buffer area of Yuganskiy Reserve, Kolynlor Lake. (confluent of Malyi Yugan River), lake near cordon. Mosses Lake shore: Carex spp., Gramineae, Sphagnum girgensohnii, Sph. and litter under Pinus sylvestris, P . sibirica and elfin wood of squarrosum, Sph. spp. sparse Betula, Salix sp. etc., 04.IX.2001, leg. Abies sibirica with Vaccinium vitis-idaea , V. myrtillus , Linnaea A.R.; 1 $, near S border of buffer area of Yuganskiy Reserve, borealis, Pleurozium schreberi, Hylocomium splendens, Dicranum Kolynlor Lake. Mosses and litter by lake shore: Carex spp., sp., Lycopodium sp., sparse Ledum palustre et al., in forest on Gramineae, Sphagnum girgensohnii , Sph . squarrosum , Sph. spp. hill crest NW of lake. 01.X.2001, leg. A.R.; 2 $$, Bolshoy Yugan sparse Betula, Salix sp. etc., 05.IX.2001, leg. A.R.; 1 $, Kol- River near Kamennyi cordon, swamped birch forest with Kotchen-Yagun River Basin (confluent of Malyi Yugan River), Sphagnum spp., Carex sp., Gramineae, Ledum palustre etc., lake near cordon. Mosses and litter by N shore of lake: Carex 15.VIII.2002, leg. A.R.; 1 $, Ay-Magromsy River Basin, Med- Linyphiid spiders of the West Siberian Plain 81 vezhyi Ugol cordon, mosses and litter under Populus tremula, River Basin, Medvezhyi Ugol cordon, mosses and litter at Pinus sibirica, Picea obovata, Pinus sylvestris with Abies thicket, southern border of sedge-mossy swamp: Carex rostrata , C. Hylocomium splendens, Pleurozium schreberi, Dicranum polyse- spp., Comarum palustre, Equisetum spp., Sphagnum girgensoh- tum , Polytrichum commune , Equisetum sylvaticum , Vaccinium nii, Sph. spp., Plagiomnium sp., Aulacomnium sp., Calamagrostis vitis-idaea , Linnaea borealis etc., (+3C, after first snowfall), sp., Menyanthes trifoliata etc., among sparse young birches, 13.IX.2002, leg. A.R.; 1 $, Ay-Magromsy River Basin, Medvezhyi 21.IX.2002, leg. A.R.; 1 $, Ay-Magromsy River Basin, Med- Ugol cordon, mosses and litter at rill bank: Carex rhyncho- vezhyi Ugol cordon, mosses and litter near rill: Plagiomnium physa, Sphagnum spp., Plagiomnium sp. etc., 16.IX.2002, leg. A.R.; sp., Sphagnum squarrosum, Sph. centrale, Sph. girgensohnii, Sph. 1 #, 4 $$, Ay-Magromsy River Basin, Medvezhyi Ugol cordon, warnstorfii, Calamagrostis sp., Carex sp. among sparse Salix sp. mosses and litter at rill bank and on flood-plain of rill: and birches, (+3C?), 28.IX.2002, leg. A.R.; 1 $, Malyi Yugan Calamagrostis sp., Ribes spp., Rosa sp., Filipendula ulmaria, River, near cordon below Maalyakh River mouth, mosses and Matteuccia struthiopteris, Equisetum sylvaticum, Sphagnum squar- litter on swamp with Sphagnum magellanicum, Sph. ?balticum, rosum, Sph. girgensohnii, Sph. spp., Plagiomnium sp. etc., 20.IX.2002, Sph. fuscum, Sph. spp., Carex sp., Eriophorum sp., Chamaedaphne leg. A.R.; 1 #, Ay-Magromsy River Basin, Medvezhyi Ugol calyculata , Ledum palustre , Andromeda polifolia , Oxycoccus cordon, mosses and litter among Abies , Picea and Betula on sp., sparse Pinus sylvestris etc., and in sweeping, 20.VIII.2003, gentle slope near SW edge of sedge-mossy swamp: Ledum leg. A.R. palustre , Vaccinium vitis-idaea , Hylocomium splendens , Pleuro- 1 $, Samotlor, bank of Vakh River, Salix bushes, litter, Aug. zium schreberi, Polytrichum commune, Sphagnum ?russowii, Sph. 1999, leg. A.T. spp. etc., (+3C?), 28.IX.2002, leg. A.R.; 1 $, Ay-Magromsy River DISTRIBUTION. Europe; in Siberia known from the Basin, 3 km N of Medvezhyi Ugol cordon, mosses and litter Urals eastward to Yenisey River; recorded in Altai Mts., under Larix sibirica and Juniperus sp. among Abies, Picea, Betula Maritime Prov., Sakhalin and Japan. with Hylocomium splendens , Pleurozium schreberi , Dicranum polysetum , Linnaea borealis , Polytrichum commune , Diphasias- trum complanatum, Vaccinium vitis-idaea, V. myrtillus etc., on Walckenaeria nudipalpis (Westring, 1851) gentle slope, 03.X.2002, leg. A.R. 2 ##, 4 $$, Luginetsky, Picea & Betula forest, in moss, 1996 Walckenaeria nudipalpis, Esyunin, Ekosistemy Sred- 22–28.VIII.1998, leg. A.T.; 3 $$, Picea, Abies & Betula forest, in nego Priob’ya, 1, p. 73. moss, 26.VIII.1998, leg. A.T. 1 $, Nefteyugansk, mixed forests: Abies, Pinus sibirica, Picea, MATERIAL. 1 $, Surgutskiy Refuge, Ob’ River Basin, Ma- Betula with Equisetum , Vaccinium spp., Empetrum, mosses, terikovyi Pasl Channel. Mosses and litter on bog near glade: VIII.2001, leg. A.T. tussocks with Carex ?globularis , Sphagnum ?girgensohnii , Sph. DISTRIBUTION. Siberia: from the Urals eastward to spp., Linnaea borealis , Equisetum sylvaticum , Vaccinium vitis- East Siberia; through the mountains of South Siberia via the idaea, Ledum palustre, 06.VIII.2000, leg. A.R. Lake Baikal region to Khabarovsk Prov. Known also from 1 $, Yuganskiy Reserve, Nyogus’yakh River, cordon Bisarki- Mongolia and Japan. na. Moss and litter at swamp amid flood-plain forest near foot of slope: Menyanthes trifoliata , Equisetum sp., Sphagnum spp., Comarum palustre , Filipendula ulmaria, ?Tomenthypnum sp., Walckenaeria nodosa O. Pickard-Cambridge, 1873 Plagiomnium sp. etc., with sparse Betula, Picea , Abies , Pinus sibirica, 25.X.1998, leg. A.R.; 1 #, 1 $, Vuya-Yany River near 1992 Walckenaeria mayumiae, Esyunin & Novokshenov, Trudy Ay-Vuya-Yany River mouth. Flood-plain depression: Filipendula Zool. Inst. AN SSSR, 226, p. 116. ulmaria, Carex sp., Gramineae, Spiraea sp., Ribes nigrum, Comar- 1996 Walckenaeria mayumiae, Esyunin, Ekosistemy Srednego um palustre, Sphagnum squarrosum, Sph. girgensohnii, Climacium Priob’ya, 1, p. 73. dendroides, Aulacomnium sp., Plagiomnium sp. etc., 24.VIII.2000, 1996 Walckenaeria nodosa, Esyunin, Ekosistemy Srednego leg. A.R.; 1 $, Bolshoy Yugan River, 6–7 km below Priob’ya, 1, p. 73. Sugmuten’yakh River mouth. Mosses and litter between Carex spp., Gramineae, Filipendula ulmaria, Spiraea sp., with Plagiom- MATERIAL. 1 #, Yuganskiy Reserve, Malyi Yugan River nium sp., Climacium dendroides etc., on swamped forest road, Basin, hut at Kol-Kotchen-Yagun River, 12 km SW of cordon. 22.VIII.2001, leg. A.R.; 1 #, near S border of buffer area of Moss and litter under Abies with Equisetum pratense, Hyloco- Yuganskiy Reserve, Koimlor (Krimlor) Lake. Litter under Picea mium splendens, Oxalis acetosella et al., on natural levee, obovata and Pinus sibirica with Lycopodium sp., Linnaea borea- 02.IX.1999, leg. A.R.; 1 #, Nyogus’yakh River near Kogontch- lis, ferns, Gramineae, Trientalis europaea, sparse Ledum palustre ina-2 field research station. Mosses and litter on swamp with etc., in moist forest near lake shore, 02.IX.2001, leg. A.R.; 2 $$, Pinus sylvestris , Betula, Ledum palustre , Andromeda polifolia, Kol-Kotchen-Yagun River Basin (confluent of Malyi Yugan Chamaedaphne calyculata, Vaccinium uliginosum, Eriophorum River), lake near cordon. Mosses and litter by N shore of lake: sp., Oxycoccus palustris, Sphagnum fuscum, Sph. magellanicum, Carex spp., Comarum palustre, Sphagnum spp., Gramineae, Salix Sph. ?angustifolium , Sph. spp., Rubus chamaemorus etc., sp., sparse Betula, 17.IX.2001, leg. A.R.; 1 $, Ay-Magromsy River 31.VIII.2000, leg. A.R.; 1 $, Nyogus’yakh River Basin near Basin, Medvezhyi Ugol cordon, mosses and litter at the foot of Petchpan’yakh River mouth. Mosses and litter on large swamp: slope near border of open swamp: Pinus sylvestris, P. sibirica, Carex spp., Comarum palustre, Equisetum sp., Eriophorum sp., Picea obovata , Juniperus communis , Ledum palustre, Gramineae, Rumex sp., ?Aulacomnium sp., Plagiomnium sp., Chamaedaphne calyculata, Carex globularis, Pleurozium schreberi, Ptilium crista-castrensis, Sphagnum sp., Chamaenerium angusti- Dicranum polysetum, Polytrichum spp., Sphagnum spp., Equise- folium , Betula and Salix sp. etc., 13.IX.2000, leg. A.R.; 1 $, tum sylvaticum, Eq. pratense, Vaccinium vitis-idaea etc., 25.IX.2002, Vuya-Yany River near Ay-Vuya-Yany River mouth. Mosses leg. A.R.; 1 #, Ay-Magromsy River Basin, 1 km N of Medvezhyi and litter on swamp: Pinus sylvestris, Ledum palustre, Androm- Ugol cordon, mosses and litter on flood-plain of rill with eda polifolia, Chamaedaphne calyculata, Oxycoccus spp., Sph- Calamagrostis sp., Filipendula ulmaria , Spiraea sp., Equisetum agnum magellanicum, Sph. ?angustifolium, Eriophorum sp. etc., sylvaticum, Plagiomnium sp., Sphagnum spp. etc., (+5C?), 05.X.2002, 27.VIII.2000, leg. A.R.; 1 #, 2 $$, near S border of buffer area leg. A.R.; 1 $ (ÀVÒ), Yuganskiy Reserve (buffer zone), flood- of rill between Kolynlor Lake and Koimlor (Krimlor) Lake. plain of a rill (confluent of Malyi Yugan River) near Achi- Mosses and litter under Pinus sibirica in forest at the rill movy-2 village: tussocks of Carex spp. and Poaceae, depressions bank: Lycopodium sp., ferns, Linnaea borealis, Vaccinium vitis- with Carex rostrata , Filipendula ulmaria , Comarum palustre, idaea, Orthilia secunda, Pleurozium schreberi, Hylocomium splen- Urtica dioica, Sphagnum centrale, Climacium dendroides, Plagi- dens, Dicranum sp., Polytrichum sp., Calamagrostis sp., sparse omnium sp., Rubus saxatilis, Salix sp., sparse Betula and Picea. Ledum palustre etc., 04.IX.2001, leg. A.R.; 1 $, Ay-Magromsy 24.VIII.2003, leg. A.R. 82 A.V. Tanasevitch

1 $, Tobolsk Field Research Station, in mosses and litter cordon. Mosses and litter between sparse Betula and Pinus spp. under Betula , Picea , Alnus with Pyrola sp., Carex globularis, by N shore of lake: Carex spp., Calamagrostis sp., Eriophorum Poaceae , Equisetum sylvaticum , Linnaea borealis , Pleurozium sp., Salix spp., Comarum palustre , Sphagnum squarrosum , Sph. schreberi , Dicranum polysetum , Oxalis acetosella , Galium sp., centrale, Sph. spp., Hypnum sp. etc., 22.IX.2001, leg. A.R. Aegopodium podagraria, Rubus idaeus, R . saxatilis etc., on slope DISTRIBUTION. Europe, the Crimea and the Cauca- (from foot to top), 28.IX.2003, leg. A.R.; 1 $, in litter and mosses sus; in Siberia known from the Urals eastward to Yenisey under Salix sp. with Poaceae, Carex spp., Filipendula ulmaria, River. Registered from China. In the Nearctic known in Galium sp., Climacium dendroides etc., at border of flood-plain of Alaska, British Columbia and Washington State. This is the Varpak River, 23.IX.2003, leg. A.R.; 1 $, mosses and litter in first record in West Siberia. swampy birch forest with Pinus sylvestris, Ledum palustre, Vac- cinium uliginosum, Carex globularis, Sphagnum girgensohnii, Sph. ?russowii, Sph. spp., Polytrichum commune, P. strictum, Pleurozium Wubanoides uralensis (Pakhorukov, 1981) schreberi, ?Aulacomnium sp., Climacium dendroides etc., 30.IX.2003, leg. A.R.; 1 $, mosses and plant debris in swampy birch-willow MATERIAL. 1 #, Tyumen, VI.2000, leg. U. sparse forest of flood-plain near left bank of Irtysh River: Carex DISTRIBUTION. Siberia: from the Urals eastward to spp., Calamagrostis sp., Sphagnum ?balticum , Sph. ?girgensohnii, Yenisey River, known in the mountains of South Siberia: Sph . squarrosum , Comarum palustre , Lythrum sp., Filipendula Altai Mts, Sayan and the Lake Baikal Region. Registered ulmaria, Climacium dendroides etc., 09.VI.2004, leg. A.R. also from Mongolia. This is the first record in West Siberia. 1 #, 1 $, Luginetsky, Picea, Abies & Betula forest, in moss, 26.VIII.1998, leg. A.T. DISTRIBUTION. Europe and the Caucasus; in Siberia Zornella cultrigera (L.Koch, 1879) known from the Urals eastward to Yenisey River; registered from Altai Mts., Sakhalin and Japan. 1996 Zornella cultrigera, Esyunin, Ekosistemy Srednego Priob’ya, 1, p. 73.

Walckenaeria picetorum (Palmgren, 1976) MATERIAL. 2 $$, near Ugut, Kynyaminskoye Lake. Sphag- num girgensohnii, Sph. ?russowii, Sph. squarrosum, Sph. ?centrale, 1996 Walckenaeria picetorum, Esyunin, Ekosistemy Srednego Sph. spp., Equisetum sylvaticum , Polytrichum commune amid Priob’ya, 1, p. 73. swampy birch forest near lake shore, 11.VIII.2001, leg. A.R. 1 $, Yuganskiy Reserve, Nyogus’yakh River, cordon Bisarki- MATERIAL. 1 #, Yuganskiy Reserve, Malyi Yugan River na. Parching rill near cordon: mosses and litter in rill-bed and Basin, 3–5 km SW of cordon at Kol-Kotchen-Yagun River, near by banks (Abies , Picea , Salix, Padus , Betula, Populus tremula, lake. Moss and litter under Pinus sibirica, P. sylvestris, young Abies Linnaea , Trientalis , Oxalis , Polytrichum commune , Carex spp., with Hylocomium splendens, Pleurozium schreberi, Dicranum sp., Equisetum sylvaticum , Sphagnum ?riparium , Sph. ?girgensohnii Vaccinium myrtillus, V. vitis-idaea, Linnaea borealis, sparse Ledum etc.), 22.X.1998, leg. A.R.; 1 $, Nyogus’yakh River Basin, forest on low knoll, 09.IX.1999, leg. A.R.; 1 $, Nyogus’yakh River near road, 3 km ENE of cordon Bisarkina. Moss and litter in forest Kogontchina-2 field research station. Mosses and litter on with Picea, Pinus sibirica, P. sylvestris, Betula, Equisetum pratense, swamp with Pinus sylvestris, Betula, Ledum palustre, Andromeda Eq . sylvaticum , Pleurozium schreberi , Hylocomium splendens, polifolia, Chamaedaphne calyculata, Vaccinium uliginosum, Erio- Vaccinium myrtillus, V. vitis-idaea, Sphagnum russowii (placely), phorum sp., Oxycoccus palustris, Sphagnum fuscum, Sph . magel- 28.X.1998, leg. A.R.; 1 $, Nyogus’yakh River, cordon Bisarkina. lanicum, Sph. ?angustifolium, Sph. spp., Rubus chamaemorus etc., Parching rill near cordon: mosses and litter in rill-bed and by 31.VIII.2000, leg. A.R.; 1 $, Ay-Magromsy River Basin, Medvezhyi banks (Carex spp., Equisetum sylvaticum, Sphagnum ?riparium, Ugol cordon, mosses and litter under Pinus sylvestris, P. sibirica, Sph. ?girgensohnii , Polytrichum commune , Filipendula ulmaria, Picea obovata , Betula with Vaccinium vitis-idaea , V. myrtillus, Gramineae, Veratrum , Linnaea , Maianthemum , Trientalis , To- Pleurozium schreberi , Hylocomium splendens , Dicranum polyse- menthypnum sp., Plagiomnium sp. etc.), 31.X.1998, leg. A.R.; 3 tum, Sphagnum ?warnstorfii, Linnaea borealis, Equisetum sylvati- $$, Nyogus’yakh River, cordon Bisarkina. Mosses and litter on cum etc., under aspen trunk, and under mosses, lichens, bark slope near parched rill about cordon: Abies , Picea , Betula, scales on bases of pine trees, 18.IX.2002, leg. A.R. Sorbus , Hylocomium splendens , Pleurozium schreberi , Ptilium, 1 #, 1 $, Luginetsky, Picea & Betula forest, in moss, 26– Maianthemum, Trientalis, Linnaea, Equisetum sylvaticum, Polytri- 28.VIII.1998, leg. A.T. chum commune, Oxalis etc., 31.X.1998, leg. A.R.; 1 $, Bolshoy 1 #, 1 $, Nefteyugansk, mixed forests: Abies, Pinus sibirica, Yugan River, near cordon Kamennyi. Moss and litter in pine Picea, Betula with Equisetum, Vaccinium spp., Empetrum, mosses, forest: Pinus sylvestris, young Pinus sibirica, edum palustre, Vaccin- VIII.2001, leg. A.T. ium vitis-idaea, V. myrtillus, Linnaea borealis, Hylocomium splen- DISTRIBUTION. Northern Europe; in Siberia distribut- dens, Pleurozium schreberi, Dicranum sp., Polytrichum commune ed from the Urals to Cisokhotia, the Kurile Islands; Altai etc., 20.VIII.1999, leg. A.R.; 2 $$, Malyi Yugan River Basin, 3–5 Mts, the southern part of Khabarovsk Prov., Sakhalin. km SW of cordon at Kol-Kotchen-Yagun River, near lake. Moss and litter under Pinus sibirica , P . sylvestris, young Abies with Walckenaeria obtusa Blackwall, 1836 Hylocomium splendens, Pleurozium schreberi, Dicranum sp., Vac- cinium myrtillus, V. vitis-idaea, Linnaea borealis, sparse Ledum on MATERIAL. 1 $, Tobolsk Field Research Station, mosses low knoll, 09.IX.1999, leg. A.R.; 1 $, Vuya-Yany River near Ay- and litter under Betula with Equisetum sylvaticum, Pyrola sp., Vuya-Yany River mouth. Mosses and litter in forest at crest line: Lathyrus sp. etc., on gentle slope near crest of Spartakovskaya Pinus sibirica, P. sylvestris, Picea obovata, Abies sibirica, Vaccinium Mt., 06.VI.2004, leg. A.R. vitis-idaea , V. myrtillus , Linnaea borealis , Trientalis europaea, DISTRIBUTION. Europe, the Urals, West Siberia. In Equisetum sylvaticum , Pleurozium schreberi , Hylocomium splen- Siberia this species has hitherto been known only from dens, Dicranum sp., Diphasiastrum sp., 21.VIII.2000, leg. A.R.; 1 $, Nyogus’yakh River near Kogontchina-2 field research station. Khabarovsk Prov. and Maritime Prov. This is the first record Mosses and litter under Betula, Abies sibirica, Picea obovata, Pinus in West Siberia. sibirica with Hylocomium splendens , Linnaea borealis , Oxalis acetosella, Majanthemum bifolium, Pyrola sp., Trientalis europaea, Walckenaeria vigilax (Blackwall, 1853) Equisetum pratense , Eq . sylvaticum etc., on 1st fluvial terrace above flood-plain, 29.VIII.2000, leg. A.R.; 2 $$, near S border of MATERIAL. 1 #, Yuganskiy Reserve, Kol-Kotchen-Yagun buffer area of Yuganskiy Reserve, rill between Kolynlor Lake River Basin (confluent of Malyi Yugan River), lake near and Koimlor (Krimlor) Lake. Mosses and litter under Pinus Linyphiid spiders of the West Siberian Plain 83 sibirica in forest at the rill bank: Lycopodium sp., ferns, Linnaea 28.VIII.1998, leg. A.T.; 2 ##, 2 $$, swampy spruce (Picea) borealis, Vaccinium vitis-idaea, Orthilia secunda, Pleurozium schreberi, forest, in moss, 25.VIII.1998, leg. A.T.; 1 $, Picea, Abies & Betula Hylocomium splendens , Dicranum sp., Polytrichum sp., Calama- forest, in moss, 26.VIII.1998, leg. A.T. grostis sp., sparse Ledum palustre etc., 04.IX.2001, leg. A.R.; 3 $$, 2 ##, Tomsk, Abies forest, in moss and litter, 15– Malyi Yugan River, near cordon below Lyarykni River mouth, 16.VIII.1998, leg. A.T. mosses and litter in forest near river bank: Pleurozium schreberi, 7 ##, 4 $$, Nefteyugansk, mixed forests: Abies , Pinus Hylocomium splendens, Dicranum polysetum, sparse Polytrichum sibirica, Picea, Betula with Equisetum, Vaccinium spp., Empetrum, commune, spots of Sphagnum girgensohnii, Linnaea borealis, Vac- mosses, VIII.2001, leg. A.T. cinium vitis-idaea, Equisetum sylvaticum, Majanthemum bifolium, Carex globularis , Rubus saxatilis , Trientalis europaea , Poaceae, DISTRIBUTION. Northern Europe; in Siberia distribut- Oxalis acetosella etc., under Pinus sibirica, P. sylvestris, Abies, Picea, ed from the Urals to Chukotka, Cisokhotia; from eastern Betula, Populus tremula, 18.VIII.2003, leg. A.R. Kazakhstan through the mountains of South Siberia via the 3 ##, 5 $$, Luginetsky, Abies, Picea, Betula forest, in moss, Lake Baikal region eastward to Khabarovsk Prov.; recorded VIII.1998, leg. A.T.; 6 $$, Picea & Betula forest, in moss, 22– also in Mongolia. Widespread in the northern Nearctic.

Table 1. Distribution of the linyphiid spiders between localities in the West Siberian Plain (1 — Noyabrsk, 2 — Surgutskiy Nature Refuge, 3 — Samotlor, 4 — Nefteyugansk, 5 — Ugut, 6 — Yuganskiy Na- ture Reserve, 7 — Tobolsk Field Research Station, 8 — Luginetsky, 9 — Tomsk, 10 — Tyumen). Òàáëèöà 1. Ðàñïðîñòðàíåíèå ïàóêîâ-ëèíèôèèä íà Çàïàäíî-Ñèáèðñêîé ðàâíèíå (1 — Íîÿáðüñê, 2 — Ñóðãóòñêèé Nature Refuge, 3 — Ñàìîòëîð, 4 — Íåôòåþãàíñê, 5 — Óãóò, 6 — Þãàíñêèé ïðèðîäíûé çàïîâåäíèê, 7 — Òîáîëüñêàÿ Field Research Station, 8 — Luginetsky, 9 — Òîìñê, 10 — Òþìåíü).

Localities in the West Siberian Plain Species 12345678910 1 Abacoproeces saltuum ++ 2 Abiskoa abiskoensis + + + 3 Agyneta affinis + + 4 A. allosubtilis + + 5 A. conigera + 6 A. decora + 7 A. levii + + 8 A. mossica + 9 A. ramosa + 10 A. rurestris + + 11 Allomengea scopigera + + 12 A. vidua ++ ++ 13 Anguliphantes angulipalpis ++ 14 A. dybowskii + + + 15 A. sibiricus + 16 Aphileta misera + 17 Araeoncus crassiceps ++ 18 A. vorkutensis + + 19 Bathylinyphia major + 20 Bathyphantes approximatus + +++ 21 B. gracilis +++ 22 B. nigrinus ++ 23 B. parvulus + + 24 B. reprobus + 25 B. setiger + ++ 26 B. simillimus + ++ 84 A.V. Tanasevitch

Table 1 (contituing). Òàáëèöà 1 (ïðîäîëæåíèå).

Localities in the West Siberian Plain Species 12345678910 27 Bolephthyphantes index + 28 Bolyphantes alticeps + + ++ 29 Carorita limnaea + + 30 C. paludosa + 31 Centromerus arcanus ++++++++ 32 C. clarus +++ +++ 33 C. incilium + 34 C. levitarsis + + 35 C. semiater ++ 36 C. sylvaticus +++ +++ + 37 Ceraticelus bulbosus + + 38 Ceratinella brevipes + 39 C. brevis + +++ 40 C. scabrosa + 41 C. wideri ++++ 42 Cnephalocotes obscurus + + + 43 Decipiphantes decipiens +++ +++ + 44 Dicymbium nigrum + 45 Diplocentria bidentata + + +++ + 46 D. rectangulata + 47 Diplocephalus subrostratus + + + 48 Diplostyla concolor + ++ 49 Dismodicus bifrons + 50 D. elevatus + 51 Drapetisca socialis ++ + 52 Drepanotylus borealis + 53 D. holmi +++ 54 D. uncatus ++ + 55 Entelecara erythropus + 56 Erigone atra + ++ + 57 E. dentipalpis + 58 E. hypoarctica + 59 Erigonella ignobilis ++ +++ 60 Erigonidium graminicola ++ 61 Floronia bucculenta + 62 Glyphesis cottonae + 63 Gnathonarium dentatum ++ 64 Gonatium rubellum + + Linyphiid spiders of the West Siberian Plain 85

Table 1 (contituing). Òàáëèöà 1 (ïðîäîëæåíèå).

Localities in the West Siberian Plain Species 12345678910 65 G. rubens + + + 66 Gongylidiellum murcidum + 67 Gongylidium rufipes + 68 Halorates distinctus + + 69 Helophora insignis + + ++++ 70 Hilaira herniosa + + + + 71 H. minuta + 72 H. pervicax + 73 Hilaira sp. + 74 Hypselistes jacksoni +++ +++++ 75 Improphantes complicatus + + + + 76 Incestophantes crucifer + 77 I. kochiellus + 78 Kaestneria dorsalis +++ 79 K. pullata ++ +++ + 80 Leptorhoptrum robustum + ++ 81 Lophomma punctatum + 82 Macrargus multesimus +++ ++++ + 83 M. rufus + + + 84 Maro saaristoi + 85 Maro sp. n. + + + 86 Maso sundevalli ++++ +++ + 87 Metopobactrus prominulus + + 88 Micrargus herbigradus + + + + + + 89 M. subaequalis + 90 Microlinyphia pusilla + + 91 Microneta viaria ++ +++ 92 Minicia marginella + 93 Minyrioloides trifrons + ++ 94 Minyriolus pusillus + + + 95 Mughiphantes taczanowskii + 96 Neriene clathrata +++ 97 N. emphana + + 98 N. montana + 99 N. radiata + + 100 Notioscopus sarcinatus + + + + 101 Obscuriphantes obscurus + 102 Oedothorax agrestis + 86 A.V. Tanasevitch

Table 1 (contituing). Òàáëèöà 1 (ïðîäîëæåíèå).

Localities in the West Siberian Plain Species 12345678910 103 O. gibbosus ++ ++ 104 O. retusus ++ 105 Oreoneta uralensis + 106 Oreonetides vaginatus + 107 Oryphantes angulatus + + ++++ 108 Panamomops dybowskii + + 109 Paraeboria jeniseica + 110 Pelecopsis mengei + + 111 P. parallela + 112 Perregrinus deformis + 113 Pityohyphantes phrygianus + 114 Pocadicnemis pumila +++ + 115 Porrhomma pallidum + + 116 P. pygmaeum + +++ 117 Praestigia pini + 118 Savignia frontata + + ++ 119 S. producta + 120 Scandichrestus tenuis + 121 Semljicola lapponicus + 122 S. latus + + + + 123 S. thaleri + + ++ 124 Silometopus elegans + 125 Stemonyphantes conspersus + 126 S. sibiricus + 127 Styloctetor romanus + 128 S. stativus + + 129 Tallusia experta ++ 130 Tapinocyba insecta + 131 T. pallens + + 132 Tenuiphantes alacris +++ +++ + 133 T. cristatus + +++ + 134 T. mengei ++ +++ + 135 T. nigriventris + + + 136 T. tenebricola + ++ ++ 137 Thyreosthenius biovatus + 138 Th. parasiticus + 139 Tibioploides arcuatus + + 140 Tibioplus diversus ++ +++ Linyphiid spiders of the West Siberian Plain 87

Table 1 (contituing). Òàáëèöà 1 (ïðîäîëæåíèå).

Localities in the West Siberian Plain Species 12345678910 141 Trematocephalus cristatus + 142 Trichoncus vasconicus + 143 Wabasso quaestio + 144 Walckenaeria alticeps + +++ + 145 W. antica 146 W. atrotibialis + +++ + 147 W. c ucull ata + + 148 W. cuspidata + + + 149 W. furc ill ata + 150 W. karpinskii + + + + + 151 W. kochi +++ 152 W. korobeinikovi + + + + 153 W. nodosa + + 154 W. nudipalpis + +++ 155 W. obtusa + 156 W. picetorum + + + 157 W. v igilax + 158 Wubanoides uralensis + 159 Zornella cultrigera +++ ++ Total species in the locality 26 28 22 22 10 130 62 47 14 44

Concluding notes on distribution zynski, 1885), Drepanotylus holmi (Eskov, 1981), Hi- laira minuta Eskov, 1979, Maro saaristoi Eskov, 1980, As correctly stated by Esyunin [1996], the West Stemonyphantes sibiricus (Grube, 1861). These taxa, Siberian spider fauna is clearly European in character. together Anguliphantes dybowskii (O. Pickard-Cam- The family Linyphiidae is no exception from this rule. bridge, 1873), Centromerus clarus (L. Koch, 1879), More than half of the fauna (52%) is composed of Panamomops dybowskii (O. Pickard-Cambridge, 1873) Holarctic or Palaearctic elements, Euro-Siberian spe- and some other species form a Siberian nucleus of the cies amount to 13% of the West Siberian fauna, which West Siberian fauna. actually contains more European (19%) than Siberian elements (13%). ACKNOWLEDGEMENT. I am most grateful to Alex- Based on the above new records, the ranges of the ander B. Ryvkin (Moscow), whose collections became basic following species have been shown to surpass Europe to this study and who provided detailed botanical descrip- and extend into West Siberia: Agyneta ramosa Jack- tions of the collecting habitats. I wish to thank also Sergei I. son, 1912, Anguliphantes angulipalpis (Westring, Golovatch (Moscow) for checking the English of the final 1851), Carorita paludosa Duffey, 1971, Centromerus draft. incilium (L. Koch, 1881), Incestophantes crucifer (Menge, 1866), Micrargus subaequalis (Westring, References 1851), Tapinocyba insecta (L. Koch, 1869), Tenuiph- antes tenebricola (Wider, 1834), Walckenaeria furcil- Eskov K.Yu. 1988. Spiders (Aranei) of Middle Siberia // lata (Menge, 1869). In contrast, the ranges of the fol- Materialy po faune Srednei Sibiri i prilezhashchikh raion- lowing species have become known to extend into west- ov Mongolii. Moskva: Institut evolyutsionnoi morfologii i ecologii zhivotnykh. P.101–155 [in Russian]. ern West Siberia from the East: Anguliphantes sibiri- Esyunin S.L., Novokshenov V.G. 1992. Interesting records of cus (Tanasevitch, 1986), Bathylinyphia major (Kulc- spiders (Aranei) from Yuganski Reserve // Fauna i ecolo- 88 A.V. Tanasevitch

gia paukov, scorpionov i lozhnoscorpionov SSSR // Trudy middle flow and the environments of the Mirnoye Ecolog- Zool. Instituta AN SSSR. 1990. V.226. P.115–117 [in ical Station // Izuchenie biologicheskogo raznoobraziya na Russian]. Yeniseiskom ecologicheskom transekte. Zhivotnyi mir. P.72– Esyunin S.L. 1996. The spider (Arachnida, Aranei) fauna of the 95 [in Russian]. Yugansky Reserve // Ekosistemy Srednego Priob’ya. Ekat- Tanasevitch A.V. 1987. The linyphiid spiders of the Caucasus, erinburg: Ekaterinburg Publ. V.1. P.67–79, 105. [in Rus- USSR (Arachnida: Araneae: Linyphiidae) // Senckenbergi- sian]. ana biol., Bd.67. No.4/6. S.297–383. Esyunin S.L., Efimik V.E. 1996. Catalogue of the Spiders (Arach- Tanasevitch A.V. 1990. The spider family Linyphiidae in the nida, Aranei) of the Urals. Moscow: KMK Sci. Press Ltd. fauna of the Caucasus (Arachnida, Aranei) // Fauna nazem- 228 pp. nykh bespozvonochnykh Kavkaza. Moscow: “Nauka” Publ. Gvozdetsky N.A., Mikhailov N.I. 1978. Physical geography of P.5–114. [in Russian]. the USSR. Asian part. 512 p. Moskva: “Mysl” Publs. [in Wunderlich J. 1973. Zur Spinnenfauna Deutschlands, XV. Russian]. Weitere seltene und bisher unbekannte Arten sowie An- Rybalov L.B., Marusik Yu.M., Tanasevitch A.V., Koponen S., merkungen zur Taxonomie und Synonymie (Arachnida: Vorobyeva I.G. 2001. Spiders (Aranei) of Yenisey River Araneae) // Senckenberg. biol. Bd.54. S.405–428.