Arthropoda Selecta 13 (1–2): 77–86 © ARTHROPODA SELECTA, 2004

Check-list of the linyphiid spiders of the Bureinsky State Nature Reserve and adjacent territories, Russian Far East (Aranei: Linyphiidae)

Àííîòèðîâàííûé ñïèñîê ïàóêîâ ñåìåéñòâà Linyphiidae Áóðåèíñêîãî çàïîâåäíèêà è ñîïðåäåëüíûõ òåððèòîðèé (Äàëüíèé Âîñòîê Ðîññèè) (Aranei: Linyphiidae)

A.V. Tanasevitch & L.A. Trilikauskas À.Â. Òàíàñåâè÷* & Ë.À. Òðèëèêàóñêàñ**

*All-Russian Research Institute for Nature Protection, Znamenskoye-Sadki, Moscow 117628 Russia. *Âñåðîññèéñêèé íàó÷íî-èññëåäîâàòåëüñêèé èíñòèòóò îõðàíû ïðèðîäû, Çíàìåíñêîå-Ñàäêè, Ìîñêâà 117628 Ðîññèÿ. ** Bureinsky State Nature Reserve, Lesnaya Str. 3, Chegdomyn, Khabarovsk Province 682030 Russia. ** Áóðåèíñêèé ãîñóäàðñòâåííûé ïðèðîäíûé çàïîâåäíèê, óë. Ëåñíàÿ 3, ×åãäîìûí, Õàáàðîâñêèé êðàé 682030 Ðîññèÿ.

KEY WORDS: Spiders, Linyphiidae, Siberia, Khabarovsk Province, faunistics, distribution. ÊËÞ×ÅÂÛÅ ÑËÎÂÀ: Ïàóêè, Linyphiidae, Ñèáèðü, Õàáàðîâñêèé êðàé, ôàóíèñòèêà, ðàñïðîñòðàíåíèå.

ABSTRACT. A check-list of 104 species of the has hitherto remained virtually known. Still the reserve spider family Linyphiidae collected in the Bureinsky occupies a highly interesting geographical position, bor- State Nature Reserve and adjacent parts, Khabarovsk dering on East Siberia in the north, on Middle and South Province, Russia, is compiled. Thee species, i.e. Agyn- Siberia in the west and southwest, while in the south it lies eta bialata (Tao, Li et Zhu, 1995), comb.n. ex Meione- close to the Manchurian region, and in the southeast to the ta; Nenilinium liteolum (Loksa, 1965), comb.n. ex Primorye (= Maritime Province). Hence, lying at the Gongylidiellum; and Neriene liupanensis Tang et Song, crossroads between several major biogeographical re- 1992 are listed as new to the Russian fauna. Faunistic gions, the reserve serves as an arena for the penetration data and the distribution pattern of each of the species and mixture of various faunal elements. This is highly are documented. important from a viewpoint of both the distribution of individual species and the place the reserve occupies in ÐÅÇÞÌÅ. Ïðèâåäåí ñïèñîê èç 104 âèäîâ ïàóêîâ the hierarchy of zoogeographical regionalization. ñåìåéñòâà Linyphiidae, íàéäåííûõ â Áóðåèíñêîì ãîñóäàðñòâåííîì çàïîâåäíèêå è åãî áëèæàéøèõ îê- Material and methods ðåñòíîñòÿõ. Òðè âèäà âïåðâûå îòìå÷åíû äëÿ ôàóíû Ðîññèè: Agyneta bialata (Tao, Li et Zhu, 1995), comb.n. The present paper is based on the extensive material ex Meioneta, Nenilinium liteolum (Loksa, 1965), collected by L. Trilikauskas in 1999–2003 as well as by A. comb.n. ex Gongylidiellum è Neriene liupanensis Tang Tanasevitch in May–June 2002 in the Bureinsky State Nature et Song, 1992. Ïðèâåäåíû òî÷êè íàõîäîê âèäîâ è Reserve and its adjacent parts. The majority of linyphiids îáîáùåíî èõ ðàñïðîñòðàíåíèå. have been determined, except for a dozen species collected from one sex only. The methods used for collecting the spiders as well as the Introduction localities have been referred to in a previous paper on spiders of the upper reaches of Bureya River [Trilikauskas, 2001]. The Bureinsky State Nature Reserve lies in the upper The material is temporarily stored in the personal collec- reaches of Bureya River, Verkhnebureinsky District, tion of A. Tanasevitch, but later it will be shared between the Khabarovsk Province, Russian Far East. The first data on collections of the Zoological Museum of the Moscow State spiders from this region and its adjacent parts belong to University, Moscow and the Bureinsky State Nature Reserve, Trilikauskas [2001] but, unfortunately, his check-list only Chegdomyn. contained a single linyphiid species, Hypomma bituber- In Material sections, the species found outside of but in the immediate proximity to the reserve proper are quoted in a culatum (Wider, 1834), recorded within the reserve proper. separate paragraph. One more species, Maro sibiricus Eskov, 1980, had been ABBREVIATIONS. The following abbreviations have reported from the environs of Sofiisk [Eskov, 1982], a been used in the text: small town situated close to the borderline of the reserve. B.R. — Bureinsky State Nature Reserve, Khabarovsk So the linyphiid fauna of the Bureinsky Nature Reserve Province. 78 A.V. Tanasevitch & L.A. Trilikauskas

P. — “Pravaya” (= right) Bureya River. Agyneta olivacea (Emerton, 1882) L. — “Levaya” (= left) Bureya River. MATERIAL. 81 ##, 93 $$, B.R., Bureya River Valley, ca. L.T. — Laimont Trilikauskas. 210 km NE of Chegdomyn, 0.5–3.5 km downstream of conflu- A.T. — Andrei Tanasevitch. ence of P. & L. Bureya rivers, 10 & 20–27.VI.2001, VII.2002, 5– 15.VIII.2002, 22.V.–3.VI. 2003, L.T.; 9 ##, 5 $$, P. Bureya River Valley, ca. 213 km NE of Chegdomyn, 0.4 km upstream of Check-list of linyphiid spiders confluence of P. & L. Bureya rivers, 4–8.VII.2002, 1.VI.2003, L.T.&A.T.; 12 ##, Bureya River Valley, ca. 210 km NE of Abiskoa abiskoensis (Holm, 1945) Chegdomyn, 0.5 km downstream of confluence of P. & L. Bureya rivers, 27.V–2.VI.2003, L.T. MATERIAL. 1 $, B.R., P. Bureya River Valley, ca. 213 km NE 1 $, Khabarovsk Prov., Verkhnebureinskii Distr., P. Bureya of Chegdomyn, 0.4 km upstream of confluence of P. & L. Bureya River Valley, ca. 45 km SE of Sofiysk, near Medvezhiy River rivers, 4–8.VII.2002, L.T.; 1 #, 11 $$, same locality, 0.4 km Valley, 26–30.VI.2000, L.T.; 21 ##, 1 $, same locality, near downstream of confluence of P. & L. Bureya rivers, 6–26.VII.2002, mouth of Lednikovyi River Valley, 11–17.VI., 29.VI–7.VII. 5–10, 15–20, 25–30.VIII.2002, 4–9.IX.2002, L.T.; 2 ##, 4 $$, 2000, L.T. same locality, 3.5 km downstream of confluence of P. & L. Bureya DISTRIBUTION. Known from northeastern Europe; in rivers, 22.V.–2.VI.2003, A.T.; 1 $, near confluence of P. & L. Asia, from the Urals to Chukotka and Cisokhotia; Middle Bureya rivers, 1.VI.2003, leg. A.T.; 4 $$, Bureya River Valley, ca. Asia, mountains of South Siberia, southern part of Kha- 210 km NE of Chegdomyn, 0.4 km downstream of confluence of barovsk Prov., Maritime Prov., Sakhalin and Mongolia. Wide- P. & L. Bureya rivers, 11–21.VII.2003, L.T. spread in the Nearctic as well. DISTRIBUTION. From Fennoscandia (whence it has been described), via the tundra and northern taiga to the Urals; in Siberia from the Urals to Cisokhotia and Kamchat- Agyneta pseudosaxatilis Tanasevitch, 1984 ka; the mountains of South Siberia, Sakhalin, China. MATERIAL. 11 ##, 7 $$, B.R., Bureya River Valley, ca. 210 km NE of Chegdomyn, 2.5 km downstream of confluence of P. & L. Bureya rivers, 1–6,11–26.VII.2002, 23 & 25 V.2003, L.T., Acanthoneta dokutchaevi (Eskov et Marusik, 1994) A.T.; 1 #, Bureya River Valley, ca. 210 km NE of Chegdomyn, 3.5 km downstream of confluence of P. & L. Bureya rivers, 16– MATERIAL. 1 #, B.R., Bureya River Valley, ca. 210 km NE 21.VII.2003, L.T. of Chegdomyn, 2.5 km downstream of confluence of P. & L. 2 $$, Khabarovsk Prov., Bureya River Valley, ca.160 km NE of Bureya rivers, 1–6.VII.2002, L.T.; 1 #, same locality, 0.4 km Chegdomyn, 6 km upstream of Usman River, 3–10.VII.2001, L.T. downstream of confluence of P. & L. Bureya rivers, 25– DISTRIBUTION. All Siberia from Yamal Peninsula to 30.VIII.2002, L.T. Cisokhotia and Kamchatka; eastern Kazakhstan, mountains DISTRIBUTION. This species has hitherto been known of South Siberia, southern part of Khabarovsk Province. from the Kolyma River basin. This is the southwesternmost locality of the species. Agyneta ripariensis Tanasevitch, 1984 MATERIAL. 1 #, B.R., P. Bureya River Valley, ca. 210 km NE Agyneta allosubtilis Loksa, 1965 of Chegdomyn, 2.5 km downstream of confluence of P. & L. Bureya rivers, 25.V.2003, A.T. MATERIAL. 2 ##, B.R., Bureya River Valley, ca. 210 km NE DISTRIBUTION. From the Urals to Chukotka. of Chegdomyn, 3.5 km downstream of confluence of P. & L. Bureya rivers, 10 & 20–27.VI.2001, L.T.; 2 ##, same locality, 0.4 km downstream of confluence of P. & L. Bureya rivers, 2– Allomengea dentisetis (Grube, 1861) 6.VII.2002, L.T. MATERIAL. B.R., P. Bureya River Valley, ca. 213 km NE of DISTRIBUTION. This species is very closely related to Chegdomyn, 0.4 km upstream of confluence of P. & L. Bureya Agyneta subtilis to substitute it all over Siberia from the Urals rivers, 26–31.VIII.2003, L.T. to Chukotka; Cisokhotia, Kamchatka; from eastern Kazakh- DISTRIBUTION. All Siberia from the Urals to Kamchat- stan via the mountains of South Siberia to Lake Baikal. ka; Middle Asia, mountains of South Siberia, Mongolia, China and Japan. In the Nearctic, it occurs from Alaska to Newfoundland. Agyneta bialata (Tao, Li et Zhu, 1995), comb.n.

MATERIAL. 1 #, B.R., P. Bureya River Valley, ca. 213 km NE Allomengea scopigera (Grube, 1889) of Chegdomyn, 0.4 km upstream of confluence of P. & L. Bureya MATERIAL. 1 #, B.R., Bureya River Valley, ca. 210 km NE rivers, 7.VIII.2002, L.T. of Chegdomyn, 0.5 km downstream of confluence of P. & L. DISTRIBUTION. This species has originally been de- Bureya rivers, 26–31.VIII.2003, L.T. scribed from Jilin Province, China [Tao et al., 1995]. This is DISTRIBUTION. Northern Europe, Caucasus, all Sibe- the northernmost locality of the species. New to the Russian ria from the Urals to Kamchatka and Kurile Islands; eastern fauna! Kazakhstan, mountains of Middle Asia, mountains of South Siberia, Mongolia. In the Nearctic, it occurs from Alaska to Agyneta mongolica (Loksa, 1965) Manitoba.

MATERIAL. 4 ##, B.R., P. Bureya River Valley, ca. 213 km Anguliphantes dybowskii (O. Pickard–Cambridge, NE of Chegdomyn, 0.4 km upstream of confluence of P. & L. 1873) Bureya rivers, 4–8.VII.2002, 13–18.VII.2002, L.T.; 1 #, Bureya MATERIAL. 4 ##, B.R., P. Bureya River Valley, near mouth River Valley, ca. 210 km NE of Chegdomyn, 3.5 km downstream of Lednikovyi River Valley, 11–17.VI.2000, L.T.; 1 #, 1 $, Bureya of confluence of P. & L. Bureya rivers, 2.VI.2003, leg. A.T. River Valley, ca. 210 km NE of Chegdomyn, 3.5 km downstream DISTRIBUTION. This species has hitherto been known of confluence of P. & L. Bureya rivers, 10, 20–27.VI. 2001, L.T.; in Russia from one locality only, i.e. the Bolshekhekhtsyrsky 2 $$, same locality, 2.5 km downstream of confluence of P. & L. Nature Reserve in the southern part of Khabarovsk Province. Bureya rivers, 6–11, 21–26.VII.2002, L.T.; 3 ##, 20 $$, same The above are the northernmost localities of the species. locality, 0.4–3.5 km downstream of confluence of P. & L. Bureya Check-list of linyphiid spiders of the Bureinsky Nature Reserve 79 rivers, 22–31.V.2003, A.T.; 60 ##, 26 $$, same locality, 0.4–3.5 1 #, 1 $, Khabarovsk Prov., Verkhnebureinskii Distr., km downstream of confluence of P. & L. Bureya rivers, VIII– Bureya River Valley, ca. 45 km SE of Sofiysk, near Medvezhiy .IX.2003, L.T.; 2 ##, 9 $$, P. Bureya River Valley, near River Valley, 27, 30.VI.2000, L.T.; confluence of P. & L. Bureya rivers, 1.VI.2003, A.T. DISTRIBUTION. Siberia: Cisokhotia, Kamchatka, moun- 1 #, Khabarovsk Prov., Bureya River Valley, near mouth of tains of South Siberia, Maritime Prov. Known from China, Levyi Ussomakh River, ca. 130 km NE of Chegdomyn, 7.X.1999, Japan and Korea. 11.X. 1999, L.T DISTRIBUTION. Widespread in Siberia from the Urals Bathyphantes reprobus (Kulczyñski, 1916) to Kamchatka and Kurile Islands; mountains of South Sibe- MATERIAL. 2 ##, 3 $$, B.R., Bureya River Valley, ca. 210 ria, Sakhalin, Mongolia. km NE of Chegdomyn, 0.4 km downstream of confluence of P. & L. Bureya rivers, 11–16, 31.VII–10.VIII.2002, L.T.; 1 #, 1 $, P. Anguliphantes karpinskii (O. Pickard-Cambridge, Bureya River Valley, ca. 213 km NE of Chegdomyn, 0.4 km 1873) upstream of mouth, 28.VII–2.VIII.2002, 2–7.IX.2002, L.T.; 1 $, MATERIAL. 4 ##, 4 $$, B.R., Bureya River Valley, ca. 210 Bureya River Valley, ca. 210 km NE of Chegdomyn, 0.5 km km NE of Chegdomyn, 0.4 km downstream of confluence of P. downstream of confluence of P. & L. Bureya rivers, 22–27.VIII. & L. Bureya rivers, 2–6, 11–26.VII.2002, 28.VII–2.VIII., 20–25. 2002, L.T.; 1 #, same locality, 2.5 km downstream of confluence VIII. 2002, L.T.; 46 ##, about 154 $$, same locality, 0.5–3.5 km of P. & L. Bureya rivers, 30.VIII–4.IX.2002, L.T.; 1 $, P. Bureya downstream of confluence of P. & L. Bureya rivers, 3–28.VII. River Valley, ca. 213 km NE of Chegdomyn, 0.4 km upstream of 2002, 2–7,17,29.VIII.2002, 7–11.IX.2002, 22.V.–3.VI.2003, L.T., mouth, 7–13.VII.2003, L.T.; 2 ##, same locality, Bureya River A.T.; 1 #, 9 $$, P. Bureya River Valley, near confluence of P. & Valley, ca. 210 km NE of Chegdomyn, 0.4 km downstream of L. Bureya rivers, 1.VI.2003, A.T.; 8 ##, Bureya River Valley, ca. confluence of P. & L. Bureya rivers, 11, 16–21.VII.2003, L.T. 210 km NE of Chegdomyn, 0.5 km downstream of confluence of DISTRIBUTION. Northern Europe; in Siberia: from the P. & L. Bureya rivers, 27.V–2.VI.2003, 13–22.VII.2003, L.T. Urals to Chukotka; mountains of South Siberia, southern part DISTRIBUTION. Siberia from Yenisei River to Cisokho- of Khabarovsk Prov., Maritime Prov.; Mongolia. tia and Kamchatka; mountains of South Siberia, southern part of Khabarovsk Prov., Maritime Prov., Sakhalin. Also known Bathyphantes simillimus (L. Koch, 1879) from Mongolia and China. MATERIAL. 31 $$, B.R., Bureya River Valley, ca. 210 km NE of Chegdomyn, 0.4 km downstream of confluence of P. & L. Anguliphantes maritimus (Tanasevitch, 1988) Bureya rivers, VII.2002, 31.VII–5.VIII, 7–12.VIII.2002, 20– MATERIAL. 1 #, B.R., Bureya River Valley, ca. 210 km NE 30.VIII–4.IX.2002, L.T.; 2 ##, 4 $$, same locality, 2.5–3.5 km of Chegdomyn, 3.5 km downstream of confluence of P. & L. downstream of confluence of P. & L. Bureya rivers, 1–6.VII. Bureya rivers, 20–27.VI. 2001, L.T.; 2 ##, Bureya River Valley, 2002, 26, 29.VIII. 2002, L.T.; 29 $$, P. Bureya River Valley, ca. ca. 210 km NE of Chegdomyn, 0.5 km downstream of confluence 213 km NE of Chegdomyn, 0.4 km upstream of mouth, 4– of P. & L. Bureya rivers, 22–27..2003, L.T.; 1 #, same locality, 2– 28.VII.2002, 28.VII–2.VIII.2002, 7–17.VIII.2002, 2–7.IX.2002, 3.VI.2003, A.T. L.T.; 10 $$, same locality, 0.5–3.5 km downstream of confluence DISTRIBUTION. Earlier it has been known from the of P. & L. Bureya rivers, 22.V.–3.VI.2003, A.T.; 2 $$, same locality, Maritime Prov. and China. The above are the northwestern- 3.5 km downstream of confluence of P. & L. Bureya rivers, most localities of the species. 10.IX.2003, L.T. 17 $$, same locality, 0.5 km downstream of confluence of P. & L. Bureya rivers, VIII–IX.2003, L.T.; 34 $$, P. Bureya River Valley, near confluence of P. & L. Bureya rivers, Asiceratinops kolymensis (Eskov, 1992) 1.VI.2003, A.T.; 15 $$, same locality, 0.4 km upstream of mouth, MATERIAL. 2 ##, B.R., Bureya River Valley, ca. 210 km NE VII, 1–6, 26–31.VIII & 8.IX.2003, L.T.; 13 $$, Bureya River of Chegdomyn, 3.5 km downstream of confluence of P. & L. Valley, ca. 210 km NE of Chegdomyn, 0.4 km downstream of Bureya rivers, 15–21.VI.2001, L.T. confluence of P. & L. Bureya rivers, 1.VII.–1.VIII.2003, L.T. DISTRIBUTION. This species has hitherto been known 5 $$, Khabarovsk Prov., Verkhnebureinskii Distr., P. Bureya from East Siberia (Kolyma River basin) and the Lake Baikal River Valley, near mouth of Lednikovyi River, ca. 43 km SE of region. Sofiysk, 11–17.VI, 10–17.VII, 24.VII– 1.VIII.2000, 27.VIII– 1.IX.2002, L.T. Asthenargoides kurenstchikovi Eskov, 1993 COMMENTS. This species is extremely close to B. eu- MATERIAL. 30 $$, B.R., Bureya River Valley, ca. 210 km NE menis (L. Koch, 1879). The latter species is distributed in of Chegdomyn, 0.5 km downstream of confluence of P. & L. northeastern Siberia, still very often being confused with B. Bureya rivers, 22,27.V., 2–3.VI.2003, A.T.; 4 ##, 10 $$, same simillimus. locality, 8.VIII, 5–6.IX.2003, L.T. DISTRIBUTION. From Fennoscandia to Yenisei River, DISTRIBUTION. Baikal, southern part of Khabarovsk mountains of South Siberia; China. Kamchatka?, Kurile Is- Prov., Maritime Province. This is the northernmost locality lands?, Sakhalin? of the species. Carorita limnaea (Crosby et Bishop, 1927) Asthenargoides logunovi Eskov, 1993 MATERIAL. 2 ##, 1 $, B.R., Bureya River Valley, ca. 210 MATERIAL. 4 ##, 2 $$, B.R., Bureya River Valley, ca. 210 km NE of Chegdomyn, 2.5 km downstream of confluence of P. km NE of Chegdomyn, 0.5 km downstream of confluence of P. & L. Bureya rivers, 25.V.2003, A.T. & L. Bureya rivers, 22.V–2.VI 2003, 2–3.VI.2003, L.T., A.T.; 3 ##, 4 $$, same locality, 12–16.VIII, 5–6.IX.2003, L.T. DISTRIBUTION. Northern Europe; widespread in Sibe- DISTRIBUTION. Southern part of Khabarovsk Prov., ria from the Urals to Cisokhotia and Kurile Islands; moun- Maritime Province. This is the northernmost locality of the tains of South Siberia, southern part of Khabarovsk Prov., species. Maritime Prov.; Mongolia, China. Also known from the Nearctic. Bathylinyphia major (Kulczyñski, 1885) MATERIAL. 1 $, B.R., Bureya River Valley, ca. 210 km NE of Centromerus amurensis Eskov et Marusik, 1992 Chegdomyn, 3.5 km downstream of confluence of P. & L. Bureya MATERIAL. 2 ##, Khabarovsk Prov., Verkhnebureinskii rivers, 22.V.–2.VI.2003, A.T.; 2 #, same locality, 21 & 31.VIII.2003, Distr., P. Bureya River Valley, near mouth of Lednikovyi River, L.T. ca. 43 km SE of Sofiysk, 26.VI–4.VII.2000, L.T. 80 A.V. Tanasevitch & L.A. Trilikauskas

DISTRIBUTION. This species has hitherto been known Concavocephalus rubens Eskov, 1989 from the Maritime Province and the southern part of Kha- MATERIAL. 1 #, B.R., Bureya River Valley, ca. 210 km NE barovsk Province. This is the northernmost locality of the of Chegdomyn, 2.5 km downstream of confluence of P. & L. species. Bureya rivers, 25.V.2003, A.T. DISTRIBUTION. From West Siberia to Cisokhotia; Centromerus clarus (L. Koch, 1879) mountains of South Siberia, southern part of Khabarovsk Prov., Sakhalin. MATERIAL. 3 $$, B.R., Bureya River Valley, ca. 210 km NE of Chegdomyn, 3.5 km downstream of confluence of P. & L. Bureya rivers, 27.V., 2.VI.2003, A.T. Dicymbium libidinosum (Kulczyñski, 1926) DISTRIBUTION. Urals, West and Middle Siberia, moun- MATERIAL. 2 $$, B.R., P. Bureya River Valley, ca. 213 km tains of South Siberia. This is the easternmost locality of the NE of Chegdomyn, near confluence of P. & L. Bureya rivers, 4– species. 8.VII.2002, L.T.; 3 $$, same locality, 1.VI.2003, A.T.; 6 $$, same locality, 0.4 km upstream of mouth, 13.VII.–1.VIII. 2003, L.T. DISTRIBUTION. From West Siberia to Cisokhotia and Ceraticelus orientalis Eskov, 1987 Kamchatka; mountains of South Siberia, Maritime Province. MATERIAL. 1 #, Khabarovsk Prov., Verkhnebureinskii Also known from China. Distr., P. Bureya River Valley, near mouth of Medvezhiy River, ca. 43 km SE of Sofiysk, 3.VII.2000, L.T. DISTRIBUTION. Siberia: Cisokhotia, Kamchatka, Diplocephalus subrostratus (O. Pickard-Cambridge, Baikal, southern part of Khabarovsk Prov., Sakhalin. 1873) MATERIAL. 1 #, B.R., P. Bureya River Valley, ca. 213 km NE of Chegdomyn, near confluence of P. & L. Bureya rivers, 4– Ceraticelus sp. 8.VII.2002, L.T.; 1 #, same locality, 0.4 km upstream of mouth, MATERIAL. 1 $, B.R., Bureya River Valley, ca. 210 km NE of 27.VII–1.VIII.2003, L.T. Chegdomyn, 3.5 km downstream of confluence of P. & L. Bureya DISTRIBUTION. Northeastern Europe (tundra), the rivers, 23.V.2003, A.T. Urals; in Siberia from Yamal Peninsula to Chukotka, Ci- COMMENTS. A complete determination of this species sokhotia, Kamchatka, Kurile Islands; mountains of South requires male material. Siberia, Sakhalin. Widespread in the Nearctic.

Ceratinella brevipes (Westring, 1851) Dismodicus bifrons (Blackwall, 1841) MATERIAL. 1 #, B.R., Bureya River Valley, ca. 210 km NE MATERIAL. 1 $, B.R., Bureya River Valley, ca. 210 km NE of of Chegdomyn, 3.5 km downstream of confluence of P. & L. Chegdomyn, 3.5 km downstream of confluence of P. & L. Bureya Bureya rivers, 10.VI.2001, L.T. rivers, 7.VII.2002, L.T. 1 #, Bureya River Valley, 2 km down- DISTRIBUTION. Widespread in Europe, occurs in the stream of mouth of Yanyr River, 13 km SW of Chekunda, Caucasus and Urals. In Asia, only known from Baikal and 19.VI.2003, L.T. Japan. This is the northeasternmost locality of the species. DISTRIBUTION. Widespread in Europe, also known from the Urals; in Siberia from Yamal Peninsula to Chukot- ka; mountains of South Siberia; Mongolia. Ceratinella brevis (Wider, 1834) MATERIAL. 4 ##, 6 $$, B.R., Bureya River Valley, ca. 210 km NE of Chegdomyn, 2.5 km downstream of confluence of P. Drapetisca socialis (Sundevall, 1932) & L. Bureya rivers, 25,31.V.2003, A.T. MATERIAL. 2 ##, 1 $, B.R., P. Bureya River Valley, ca. 213 DISTRIBUTION. Widespread in Europe, known from km NE of Chegdomyn, 0.4 km upstream of confluence of P. & the Crimea, Caucasus and Middle Asia; in Siberia from the L. Bureya rivers, 7.VIII.2002, 27.VIII.– 1.IX.2002, L.T.; Urals to Cisokhotia and Kamchatka; mountains of South DISTRIBUTION. Widespread in Europe, known from Siberia, Maritime Prov.; Mongolia, China, Japan. the Urals and Caucasus; in Asia: Middle Asia; West and Middle Siberia, Kamchatka, Sakhalin, Eastern Kazakhstan, Altai Mts, southern part of Khabarovsk Prov., Maritime Ceratinella scabrosa (O. Pickard-Cambridge, 1871) Prov.; China, Japan. MATERIAL. 1 #, B.R., P. Bureya River Valley, ca. 213 km NE of Chegdomyn, near confluence of P. & L. Bureya rivers, 4– 8.VII.2002, L.T.; 2 $$, B.R., Bureya River Valley, ca. 210 km NE Epibellowia pacifica (Eskov et Marusik, 1992) of Chegdomyn, 2.5 km downstream of confluence of P. & L. MATERIAL. 7 ##, 3 $$, B.R., Bureya River Valley, ca. 210 Bureya rivers, 25.V.2003, A.T. km NE of Chegdomyn, 3.5 km downstream of confluence of P. DISTRIBUTION. Widespread in Europe, occurs in the & L. Bureya rivers, 10, 20–27.VI.2001, L.T.; 2 ##, 1 $, same Caucasus and Urals; in Asia, only known from Altai Mts and locality, 0.4 km downstream of confluence of P. & L. Bureya rivers, 2–11.VII.2002, L.T.; 8 ##, 2 $$, same locality, 3.5 km Japan. The above are the northeasternmost localities of the downstream of confluence of P. & L. Bureya rivers, 22.V– species. 2.VI.2003, A.T.; 1 #, 1 $, same locality, 10.IX.2003, L.T.; 2 ##, 1 $, P. Bureya River Valley, ca. 213 km NE of Chegdomyn, near Cnephalocotes obscurus (Blackwall, 1834) confluence of P. & L. Bureya rivers, 1.VI.2003, A.T.; 1 #, Bureya MATERIAL. 1 #, B.R., Bureya River Valley, ca. 210 km NE River Valley, ca. 210 km NE of Chegdomyn, 0.4 km downstream of confluence of P. & L. Bureya rivers, 1–6.VII.2003, L.T. of Chegdomyn, 2.5 km downstream of confluence of P. & L. Bureya rivers, 16–21.VII.2003, L.T. DISTRIBUTION. This species has hitherto known from 1 $, Khabarovsk Prov., Verkhnebureinskii Distr., P. Bureya Baikal and southern part of Khabarovsk Province. The above River Valley, near mouth of Medvezhiy River, ca. 43 km SE of are the northernmost localities of the species. Sofiysk, 26–30.VI.2000, L.T. DISTRIBUTION. Widespread in Europe; in Siberia Erigone atra Blackwall, 1833 known from the Urals to Cisokhotia; East Kazakhstan, moun- MATERIAL. 1 # , B.R., P. Bureya River Valley, 7 km tains of South Siberia, Sakhalin. upstream of mouth, 10–14.VII.1999, L.T.; 1 #, Bureya River Check-list of linyphiid spiders of the Bureinsky Nature Reserve 81

Valley, ca. 210 km NE of Chegdomyn, 3.5 km downstream of Gnathonarium taczanowskii (O. Pickard-Cambridge, confluence of P. & L. Bureya rivers, 19.VII.2003, L.T. 1873) 1 #, Khabarovsk Prov., Verkhnebureinskii Distr., P. Bureya MATERIAL. 1 $, B.R., P. Bureya River Valley, near Urgal River Valley, ca. 45 km SE of Sofiysk, near Lednikovyi River River Valley, 20.VII.2000, L.T. Valley, 11–17.VI.2000, L.T.; 1 $, near Chekunda, 14.V.2001, L.T.; DISTRIBUTION. Siberia from the Urals to Chukotka, 1 # L. Bureya River Valley, near Chapkhoz River mouth, 23– 26 .VI.2001, L.T. Cisokhotia, Kamchatka, Commandor Islands; mountains of DISTRIBUTION. All over the Holarctic. South Siberia, southern part of Khabarovsk Prov., Maritime Prov., Sakhalin; also known from Mongolia. Erigone capra Simon, 1884 MATERIAL. 1 $ , B.R., P. Bureya River Valley, 2.5 km Gonatium pacificum Eskov, 1989 upstream of mouth, 13.VII.1999, L.T.; 1 #, same locality, 3.5 km MATERIAL. 1 $, B.R., P. Bureya River Valley, ca. 213 km NE downstream of confluence of P. & L. Bureya rivers, 22.V.– of Chegdomyn, 0.4 km upstream of confluence of P. & L. Bureya 2.VI.2003, A.T. rivers, 2.VIII.2002, L.T.; 3 ##, 5 $$, Bureya River Valley, ca. 210 DISTRIBUTION. Northern Europe, the Caucasus; in km NE of Chegdomyn, 3.5 km downstream of confluence of P. Siberia the Altai Mts., Tuva, Kurile Islands and Sakhalin. & L. Bureya rivers, 14.VIII.2002, 29.VIII.2002, L.T.; 2 $$, same locality, 2.5 km downstream of confluence of P. & L. Bureya rivers, 4–12.IX.2002, L.T.; 1 #, 2 $$, same locality, 23,25.V.2003, Estrandia grandaeva (Keyserling, 1886) A.T.; 4 ##, 1 $, same locality, 2.5–3.5 km downstream of MATERIAL. 1 #, B.R., Bureya River Valley, ca. 210 km NE confluence of P. & L. Bureya rivers, 4.VII, 5–25.VIII.2003, L.T. of Chegdomyn, 0.5– 3.5 km downstream of confluence of P. & 4 $$, Khabarovsk Prov., Verkhnebureinskii Distr., P. Bureya L. Bureya rivers, 15–20.VI.2001, 13.VII.2002, L.T.; 9 ##, 14 $$, River Valley, ca. 45 km SE of Sofiysk, near mouth of Medvezhiy 2.5 km downstream of confluence of P. & L. Bureya rivers, River, 20–27.VI.2000, 3.VII.2000, L.T.; 1 $, same locality, near 31.V.2003, A.T. mouth of Lednikovyi River, 4.VIII.2000, L.T. 1 $, Khabarovsk Prov., Verkhnebureinskii Distr., Niman DISTRIBUTION. Siberia: Chukotka, southern part of River Valley, ca. 43 km SE of Sofiysk, 18.VI.2000, L.T.; 2 $$, ca. Khabarovsk Prov., Maritime Prov., Sakhalin; Mongolia. 45 km SE of Sofiysk, near Mt Kurumkan, 18–24.VI.2000, V. Morozova; 7 ##, 23 $$, P. Bureya River Valley, ca. 45 km SE of Sofiysk, near Medvezhiy River Valley, VI–VII.2000, L.T. Gonatium rubens (Blackwall, 1833) DISTRIBUTION. Fennoscandia, the Urals; in Siberia MATERIAL. 2 ##, B.R., Bureya River Valley, ca. 210 km NE known from West Siberia to Chukotka, Cisokhotia, Kam- of Chegdomyn, 2.5–3.5 km downstream of confluence of P. & L. chatka; mountains of South Siberia, Sakhalin. Also known Bureya rivers, 29.VIII.2002, 9–12.IX.2002, L.T.; 1 #, 1 $, same locality, 2.5 km downstream of confluence of P. & L. Bureya from Mongolia, China and Japan. Widespread in the Nearc- rivers, 21–26.VII, 30.VIII–4.IX.2003, L.T. tic. 2 $$, Khabarovsk Prov., Verkhnebureinskii Distr., P. Bureya River Valley, ca. 45 km SE of Sofiysk, near mouth of Medvezhiy Flagelliphantes flagellifer (Tanasevitch, 1987) and Lednikovyi rivers, 3.VII, 4.VIII.2000, L.T. MATERIAL. 1 $, B.R., Bureya River Valley, ca. 210 km NE of DISTRIBUTION. Widespread in Europe, known from Chegdomyn, 0.4 km downstream of confluence of P. & L. Bureya the Caucasus, Urals, Western Kazakhstan and Middle Asia; rivers, 4–9.IX.2002, L.T.; 1 #, same locality, 3.5 km downstream Siberia from Yamal Peninsula to Chukotka and Cisokhotia, of confluence of P. & L. Bureya rivers, 27.V.2003, A.T. mountains of South Siberia, Maritime Prov., Sakhalin; Mon- DISTRIBUTION. Earlier this species has been known golia, Japan. from the Kolyma River basin and Kamchatka. This is the westernmost locality of the species. Halorates submissus (L. Koch, 1879) MATERIAL. 2 $$, B.R., Bureya River Valley, ca. 210 km NE Floronia bucculenta (Clerck, 1757) of Chegdomyn, 3.5 km downstream of confluence of P. & L. MATERIAL. 1 $, B.R., Bureya River Valley, ca. 210 km NE of Bureya rivers, 9.VIII. 2002, L.T.; 2 $$, same locality, 22– Chegdomyn, 0.5 km downstream of confluence of P. & L. Bureya 27.V.2003, A.T. rivers, 17.VIII.2002, L.T. 1 $, Bureya River Valley, ca.160 km NE of Chegdomyn, 6 km DISTRIBUTION. Widespread in Europe, occurs in the upstream of Usman River, 2–6.VII.2001, L.T. Urals and Caucasus. In Asia known in West Siberia, moun- DISTRIBUTION. Caucasus, Middle Asia, eastern Kaza- tains of South Siberia, southern part of Khabarovsk Prov., khstan; in Siberia: from the Urals to Cisokhotia, Kamchatka, Maritime Prov., Sakhalin; China. Kurile Islands, mountains of South Siberia, Maritime Prov., Sakhalin; known in Himalayas, China, Japan, Korea. Glyphesis asiaticus Eskov, 1989 MATERIAL. 7 ##, 9 $$, B.R., Bureya River Valley, ca. 210 Hilaira gibbosa Tanasevitch, 1982 km NE of Chegdomyn, 2.5 km downstream of confluence of P. MATERIAL. 1 #, B.R., Bureya River Valley, ca. 210 km NE & L. Bureya rivers, 23,25.V.2003, A.T. of Chegdomyn, 2.5 km downstream of confluence of P. & L. DISTRIBUTION. Siberia from Yenisei River to Chukot- Bureya rivers, 1–6.VII.2003, L.T. ka and Cisokhotia; Sayan Mts, southern part of Khabarovsk DISTRIBUTION. Known from the northeastern part of Prov., Maritime Prov., Sakhalin. Europe (tundra), all Siberia from Yamal Peninsula to Ci- sokhotia, Kamchatka, mountains of South Siberia; Mongo- Gnathonarium dentatum (Wider, 1834) lia. In the Nearctic, northern Canada. MATERIAL. 1 #, Khabarovsk Prov. Urgal River Valley, ca. 80 km NE of Chegdomyn, 31.V.2001, L.T. Hilaira herniosa (Thorell, 1875) DISTRIBUTION. Widespread in Europe, known from MATERIAL. 1 #, B.R., Bureya River Valley, ca. 210 km NE the Caucasus, Middle Asia, Iran. In Siberia occurs in West of Chegdomyn, 0.4 km downstream of confluence of P. & L. and Middle Siberia, Kamchatka, Kurile Islands; mountains Bureya rivers, 2–6.VII.2002, L.T.; 9 ##, 17 $$, same locality, of South Siberia, southern part of Khabarovsk Prov., Mari- 2.5–3.5 km downstream of confluence of P. & L. Bureya rivers, time Prov., Sakhalin; Mongolia, China, Japan. 29.VIII.2002, 23,27,31.V.2003, L.T., A.T.; 2 ##, 5 $$, P. Bureya 82 A.V. Tanasevitch & L.A. Trilikauskas

River Valley near confluence of P. & L. Bureya rivers, 1.VI.2003, DISTRIBUTION. Northeastern part of Europe (tundra); A.T. in Siberia from Yamal Peninsula to Chukotka and Cisokho- 1 #, 1 $, Khabarovsk Prov., Verkhnebureinskii Distr., P. tia; mountains of South Siberia, southern part of Khabarovsk Bureya River Valley, ca. 45 km SE of Sofiysk, near mouth of Province. Lednikovyi River, 29.VI–4.VII.2000, L.T.; DISTRIBUTION. Northern Europe, the Urals; all Sibe- ria from Yamal Peninsula to Chukotka, Cisokhotia, Kam- Incestophantes obtusus Tanasevitch, 1996 chatka, Commandor and Kurile islands, mountains of South MATERIAL. 1 #, 2 $$, B.R., Bureya River Valley, ca. 210 km Siberia, southern part of Khabarovsk Prov.; Mongolia, Ja- NE of Chegdomyn, 0.4 km downstream of confluence of P. & L. Bureya rivers, 31.VII–5.VIII, 20.VIII.2002, L.T.; 3 $$, same pan. In the Nearctic, occurs from Alaska to Newfoundland. locality, 3.5 km downstream of confluence of P. & L. Bureya rivers, 20&29.VIII.2002, 4.IX.2002, L.T.; 2 ##, 3 $$, same Hilaira minuta Eskov, 1979 locality, 22.V.–2.VI.2003, A.T., 1 $, Bureya River Valley, ca. 210 MATERIAL. 1 #, B.R., Bureya River Valley, ca. 210 km NE km NE of Chegdomyn, 0.4 km downstream of confluence of P. of Chegdomyn, 2.5 km downstream of confluence of P. & L. & L. Bureya rivers, 2–3.VI.2003, A.T.; 3 $$, Bureya River Valley, Bureya rivers, 5–10.VIII.2003, L.T. ca. 210 km NE of Chegdomyn, 0.4 km downstream of confluence DISTRIBUTION. Siberia from Yenisei River to Chukot- of P. & L. Bureya rivers, 11–16.VII, 31.VII.–5.VIII.2003, L.T.; 1 $, ka and Cisokhotia, mountains of South Siberia, southern part same locality, 3.5 km downstream of confluence of P. & L. Bureya of Khabarovsk Prov.; Mongolia. rivers, 19.VII.2003, L.T. 1 $, Khabarovsk Prov., Verkhnebureinskii Distr., P. Bureya River Valley, ca. 45 km SE of Sofiysk, near Medvezhiy River Holminaria sibirica Eskov, 1991 Valley, 20–27.VI.2000, L.T. 1 $, ca. 130 km NE of Chegdomyn, MATERIAL. 3 ##, 4 $$, B.R., Bureya River Valley, ca. 210 Bureya River Valley, near mouth of Levyi Ussomakh River, km NE of Chegdomyn, 3.5 km downstream of confluence of P. 2.VII.2003, L.T. & L. Bureya rivers, 3.VI.2003, A.T.; 2 ##, 5 $$, P. Bureya River DISTRIBUTION. Known from Tuva, southern part of Valley, ca. 213 km NE of Chegdomyn, 0.4 km upstream of Khabarovsk Prov., Mongolia and China. The above are the confluence of P. & L. Bureya rivers, 1.VI.2003, A.T. northernmost localities of the species. DISTRIBUTION. Middle Siberia, Baikal region, Mari- time Prov., Sakhalin, China. Kaestneria pullata (O. Pickard-Cambridge, 1963) Hypselistes jacksoni (O. Pickard-Cambridge, 1902) MATERIAL. B.R., 2 ##, 4 $$, Bureya River Valley, ca. 210 km NE of Chegdomyn, 3.5 km downstream of confluence of P. MATERIAL. 1 $, B.R., P. Bureya River Valley, near mouth of & L. Bureya rivers, 22.V.–2.VI.2003, A.T. Bureika River, 19.VII.2000, L.T.; 2 $$, Bureya River Valley, ca. DISTRIBUTION. Northern Europe, all Siberia from the 210 km NE of Chegdomyn, 0.5 km downstream of confluence of P. & L. Bureya rivers, 7, 12–17.VIII.2002, L.T.; 1 #, P. Bureya Urals to Chukotka, Cisokhotia, Kamchatka, Kurile Islands; River Valley, ca. 213 km NE of Chegdomyn, 0.4 km upstream of western Kazakhstan, mountains of South Siberia, southern confluence of P. & L. Bureya rivers, 7.VIII.2002, L.T.; 1 #, same part of Khabarovsk Prov., Maritime Prov., Sakhalin, China. locality, 1.VI.2003, A.T. Widespread in the Nearctic. 1 $, Khabarovsk Prov., Verkhnebureinskii Distr., upper reaches of P. Bureya River, ca. 50 km SE of Sofiysk, near Lasiargus pilipes (Kulczyñski, 1908) Medvezhiy River Valley, 14.VI.2000, L.T. MATERIAL. 1 #, B.R., Bureya River Valley, ca. 210 km NE DISTRIBUTION. Northern Europe and the Caucasus, all of Chegdomyn, 2.5 km downstream of confluence of P. & L. Siberia from the Urals to Chukotka, Cisokhotia, Kamchatka, Bureya rivers, 31.VII–5.VIII.2002, L.T. Wrangel Island; western Kazakhstan, mountains of South DISTRIBUTION. Siberia from Yenisei River to Cisokho- Siberia, southern part of Khabarovsk Prov., Maritime Prov.; tia, mountains of South Siberia, Maritime Prov., Sakhalin. Mongolia, China. In the Nearctic, Alaska and Saskatchewan. Hypselistes semiflavus (L. Koch, 1879) “Lepthyphantes” kolymensis Tanasevitch et Eskov, MATERIAL. 1 #, B.R., Bureya River Valley, Tuyun River 1987 Valley, near mouth, ca.10 km SW of Chekunda, 6.IX.2001, L.T. MATERIAL. 1 $, Khabarovsk Prov., Verkhnebureinskii Dis- DISTRIBUTION. Northeastern part of Europe (tundra), tr., P. Bureya River Valley, ca. 45 km SE of Sofiysk, near the Urals; Siberia from Yamal Peninsula to Cisokhotia, Kam- Medvezhiy River Valley, 7.VII.2003, L.T. chatka, Kurile Islands, mountains of South Siberia, southern DISTRIBUTION. Earlier this species has only been known part of Khabarovsk Prov., Maritime Prov. In the Nearctic, from the Kolyma River basin. This is the southwesternmost Yukon Territories. locality of the species.

Incestophantes laricetorum (Tanasevitch et Eskov, “Lepthyphantes” luteipes (L. Koch, 1879) 1987) MATERIAL. 1 #, B.R., Bureya River Valley, ca. 210 km NE MATERIAL. 1 #, B.R., Bureya River Valley, ca. 210 km NE of Chegdomyn, 0.5 km downstream of confluence of P. & L. of Chegdomyn, 3.5 km downstream of confluence of P. & L. Bureya rivers, 31.VII–5.VIII.2002, L.T. Bureya rivers, L.T.; 1 #, 1 $, Bureya River Valley, ca. 210 km NE DISTRIBUTION. Siberia from the Urals to Cisokhotia of Chegdomyn, 3.5 km downstream of confluence of P. & L. and Kamchatka, mountains of South Siberia; Mongolia, Japan. Bureya rivers, 11–16, 17.VII. 2002, L.T.; 1 #, 2 $$, same locality, 2.5 km downstream of confluence of P. & L. Bureya rivers, 14.VIII. 2002, 25.V.2003, L.T., A.T; 2 ##, 2 $$, same locality, 04, Lophomma cognatum Holm, 1960 21–26.VII., 25–30.VIII.2003, L.T. MATERIAL. 5 $$, B.R., Bureya River Valley, ca. 210 km NE of 2 ##, 1 $, P. Khabarovsk Prov., Verkhnebureinskii Distr., Chegdomyn, 0.5 km downstream of confluence of P. & L. Bureya Bureya River Valley, ca. 45 km SE of Sofiysk, near Medvezhiy rivers, 29.VIII.2002, L.T.; 1 $, same locality, 2.5 km downstream of River Valley, 14, 20–27.VI.2000, 4.VIII.2000, L.T.; 1 #, Bureya confluence of P. & L. Bureya rivers, 31.V.2003, A.T. River Valley, ca.160 km NE of Chegdomyn, 6 km upstream of DISTRIBUTION. Siberia from the Urals to Cisokhotia, Usman River, 2.VII.2001, L.T. mountains of South Siberia, southern part of Khabarovsk Check-list of linyphiid spiders of the Bureinsky Nature Reserve 83

Prov., Maritime Prov., Sakhalin. In the Nearctic, only known DISTRIBUTION. All over the Palaearctic and West Ne- from Alaska. arctic.

Maro borealis Eskov, 1991 Microneta viaria (Blackwall, 1841) MATERIAL. 4 ##, 7 $$, B.R., Bureya River Valley, ca. 210 MATERIAL. 9 ##, 9 $$, B.R., Bureya River Valley, ca. 210 km NE of Chegdomyn, 3.5 km downstream of confluence of P. km NE of Chegdomyn, 0.5 km downstream of confluence of P. & L. Bureya rivers, 29.VIII.2002, 27,31.V–2.VI.2003, L.T., A.T.; 4 & L. Bureya rivers, 3–8, 13–23.VII.2002, 28.VII–7.VIII.2002, ##, 12 $$, same locality, 2.5 km downstream of confluence of L.T.; 5 ##, same locality, 22.V–2.6. 2003, L.T.; 3 ##, 1 $, same P. & L. Bureya rivers, 23–31.V.2003, A.T.; 3 ##, 15 $$, near locality, 2–3.VI.2003, A.T.; 4 ##, 10 $$, same locality, 2–13, confluence of P. & L. Bureya rivers, 1.VI.2003, A.T.; 3 ##, 3 $$, 17–22.VII, 1–8.VIII, 6.IX.2003, L.T. Bureya River Valley, ca. 210 km NE of Chegdomyn, 3.5 km DISTRIBUTION. All over the Holarctic. downstream of confluence of P. & L. Bureya rivers, 10.IX.2003, L.T. DISTRIBUTION. Siberia from Yenisei River to the Koly- Mughiphantes aculifer (Tanasevitch, 1988) ma River basin, southern part of Khabarovsk Prov., Sakhalin. MATERIAL. 1 $, B.R., Bureya River Valley, ca. 210 km NE of Chegdomyn, 2.5 km downstream of confluence of P. & L. Bureya Maro flavescens (O. Pickard-Cambridge, 1873) rivers, 1–6.VII.2002, L.T.; 4 ##, 4 $$, same locality, 0.4 km MATERIAL. 31 ##, 41 $$, B.R., Bureya River Valley, ca. downstream of confluence of P. & L. Bureya rivers, 2–6, 9– 210 km NE of Chegdomyn, 0.5–3.5 km downstream of conflu- 26.VII.2002, 22.VIII.2002, L.T.; 6 ##, P. Bureya River Valley, ca. ence of P. & L. Bureya rivers, 22.V.–3.VI.2003, A.T.; 4 $$, same 213 km NE of Chegdomyn, 0.4 km upstream of confluence of P. locality, 0.5 km downstream of confluence of P. & L. Bureya & L. Bureya rivers, 8–13.VII.2002, 17.VIII.2002, 1–7.IX.2002, rivers, 8.VIII, 6.IX.2003, L.T.; 20 ##, 29 $$, P. Bureya River L.T.; 1 #, 1 $, Bureya River Valley, ca. 210 km NE of Chegdomyn, Valley, near confluence of P. & L. Bureya rivers, 1.VI.2003, A.T.; 0.5 km downstream of confluence of P. & L. Bureya rivers, 3 $$, same locality, 0.4 km upstream of confluence of P. & L. 31.VII–5.VIII, 10–15.VIII.2003, L.T. Bureya rivers, 8.IX.2003, L.T. 1 #, Khabarovsk Prov., Verkhnebureinskii Distr., P. Bureya DISTRIBUTION. Siberia from Yenisei to Cisokhotia, River Valley, ca. 45 km SE of Sofiysk, near mouth of Lednikovyi mountains of South Siberia, southern part of Khabarovsk River, 29.VI–4.VII.2000, L.T. Prov., Maritime Prov., Sakhalin. DISTRIBUTION. Known from the Kolyma River basin, Cisokhotia, southern part of Khabarovsk Prov., Maritime Maro sibiricus Eskov, 1980 Province. MATERIAL. 3 $$, B.R., Bureya River Valley, ca. 210 km NE of Chegdomyn, 3.5 km downstream of confluence of P. & L. Mughiphantes sachalinensis (Tanasevitch, 1987) Bureya rivers, 23, 31.V. 2003, A.T. MATERIAL. 1 #, B.R., Bureya River Valley, ca. 210 km NE DISTRIBUTION. Northeastern part of Europe (tundra); of Chegdomyn, 0.4 km downstream of confluence of P. & L. in Siberia from West Siberia to Cisokhotia, Kamchatka, Bureya rivers, 6.IX.2003, L.T. Kurile Islands, mountains of South Siberia, southern part of DISTRIBUTION. This species has hitherto been known Khabarovsk Prov., Maritime Prov., Sakhalin. from Sakhalin, Kurile Islands and China. This is the north- westernmost locality of the species. Maro sp. MATERIAL. 15 ##, 29 $$, B.R., Bureya River Valley, ca. Mugliphantes taczanowskii (O. Pickard-Cambridge, 210 km NE of Chegdomyn, 2.5–3.5 km downstream of conflu- 1873) ence of P. & L. Bureya rivers, 23.V.–2.VI.2003, A.T.; 28 ##, 19 MATERIAL. 2 ##, B.R., Bureya River Valley, ca. 210 km NE $$, P. Bureya River Valley, near confluence of P. & L. Bureya of Chegdomyn, 3.5 km downstream of confluence of P. & L. rivers, 1.VI.2003, A.T. Bureya rivers, 20–27.VI.2001, L.T.; 1 $, P. Bureya River Valley, ca. DISTRIBUTION. This species seems to be new and it 213 km NE of Chegdomyn, 0.4 km upstream of confluence of P. will be described elsewhere. & L. Bureya rivers, 27.VIII.2002, L.T.; 9 ##, 3 $$, Bureya River Valley, ca. 210 km NE of Chegdomyn, 0.5 km downstream of Maso sundevalli (Westring, 1851) confluence of P. & L. Bureya rivers, 22–27.V. 2003, 1–3.VI.2003, MATERIAL. 1 $, B.R., P. Bureya River Valley, ca. 213 km NE L.T., A.T.; 3 $$, same locality, 1–6,17–22.VII.2003, 27.VII– of Chegdomyn, 0.4 km upstream of confluence of P. & L. Bureya 1.VIII.2003, L.T.; 1 #, 6 $$, same locality, 31.VII–6.VIII, rivers, 8.IX.2003, L.T. 31.VIII–6.IX.2003, L.T.; 2 ##, 5 $$, P. Bureya River Valley, ca. DISTRIBUTION. All over the Holarctic. 213 km NE of Chegdomyn, 0.4 km upstream of confluence of P. & L. Bureya rivers, 1.VI.2003, A.T.; 1 $, same locality, 22– 26.VIII.2003, L.T. Micrargus herbigradus (Blackwall, 1854) 1 #, Khabarovsk Prov., Verkhnebureinskii Distr., P. Bureya MATERIAL. 9 ##, 27 $$, B.R., Bureya River Valley, ca. 210 River Valley, ca. 45 km SE of Sofiysk, near mouth of Lednikovyi km NE of Chegdomyn, 2.5–3.5 km downstream of confluence of and Medvezhiy rivers, 14.VI.2000, L.T. P. & L. Bureya rivers, 22.V.–2.VI.2003, A.T.; 3 ##, 2 $$, P. Bureya DISTRIBUTION. Siberia from Yamal Peninsula to River Valley, near confluence of P. & L. Bureya rivers, 1.VI.2003, Chukotka, Cisokhotia, Kamchatka, mountains of South Sibe- A.T. ria, southern part of Khabarovsk Prov., Sakhalin. DISTRIBUTION. Widespread in Europe, also known from the Caucasus and Urals; in Asia in West and Middle Siberia, Kamchatka; mountains of South Siberia, southern Nematogmus sanguinolentus (Walckenaer, 1841) part of Khabarovsk Prov., Maritime Prov., Kurile Islands, MATERIAL. 1 $, Khabarovsk Prov., Bureya River Valley, Sakhalin; China, Japan. ca.160 km NE of Chegdomyn, 6 km upstream of Usman River, 5–10.VII.2001, L.T. Microlinyphia pusilla (Sundevall, 1830) MATERIAL. Khabarovsk Prov., Verkhnebureinskii Distr., 3 Nenilinium luteolum (Loksa, 1965), comb.n. $$, P. Bureya River Valley, ca. 45 km SE of Sofiysk, near MATERIAL. 13 ##, 27 $$, B.R., Bureya River Valley, ca. Medvezhiy River Valley, 27.VI, 6.VII.2000, L.T. 210 km NE of Chegdomyn, 0.4 km downstream of confluence of 84 A.V. Tanasevitch & L.A. Trilikauskas

P. & L. Bureya rivers, 22,27.V.2003, A.T.; 1 #, 1 $, same locality, Oreonetides badzhalensis Eskov, 1991 7.IX.2003, L.T. MATERIAL. 4 $$, B.R., Bureya River Valley, ca. 210 km NE COMMENTS. This species has originally been described of Chegdomyn, 3.5 km downstream of confluence of P. & L. from Mongolia [Loksa, 1965] as Gongylidiellum. As the Bureya rivers, 22,27.V.2003, A.T.; 1 #, 1 $, same locality, 0.5 km genital structure of both sexes of G. luteolum definitely downstream of confluence of P. & L. Bureya rivers, 7&12.IX.2003, shows it to be congeneric with Nenilinium asiaticum Eskov, L.T. 1988 (the type species), luteolum is to be referred to as DISTRIBUTION. Known only from the southern part of Nenilinium luteolum (Loksa, 1965), comb.n. This species is Khabarovsk Province. The above are the northernmost local- new to the Russian fauna! ities of the species.

Neriene clathrata (Sundevall, 1830) Oreonetides helsdingeni Eskov, 1984 MATERIAL. 1 #, 1 $, B.R., Bureya River Valley, ca. 210 km MATERIAL. 1 #, B.R., Bureya River Valley, near mouth of NE of Chegdomyn, 0.5 km downstream of confluence of P. & L. Levyi Ussomakh River, ca. 130 km NE of Chegdomyn, 7.X.1999, Bureya rivers, 12.VIII.2002, 22–27.V. 2003, L.T.; 1 $, Bureya L.T.; 1 #, Bureya River Valley, ca. 210 km NE of Chegdomyn, 3.5 River Valley, ca. 210 km NE of Chegdomyn, 0.5 km downstream km downstream of confluence of P. & L. Bureya rivers, VI.2001, of confluence of P. & L. Bureya rivers, 6.VIII.2003, L.T. L.T.; 1 #, same locality, 22.V.2003, A.T. 1 #, Khabarovsk Prov., Bureya River Valley, near mouth of 1 #, Khabarovsk Prov., Verkhnebureinskii Distr., P. Bureya Ust-Urgal River, 17.VI.2003, L.T.; 1 #, Bureya River Valley, River Valley, ca. 45 km SE of Sofiysk, near mouth of Lednikovyi Chekunda, 20.VI.2003, L.T. River, 29.VI–4.VII.2000, L.T. DISTRIBUTION. Throughout the Holarctic. DISTRIBUTION. Siberia from Yenisei River to Kolyma River; mountains of South Siberia, southern part of Kha- Neriene liupanensis Tang et Song, 1992 barovsk Province. MATERIAL. 2 $$, B.R., Bureya River Valley, ca. 210 km NE of Chegdomyn, 0.4 km downstream of confluence of P. & L. Panamomops tauricornis (Simon, 1881) Bureya rivers, 11–16.VII. 2002, 31.VII–5.VIII.2003, L.T.; 1 $, MATERIAL. 9 ##, 10 $$, B.R., Bureya River Valley, ca. 210 Bureya River Valley, 2.5 km downstream of confluence of P. & km NE of Chegdomyn, 2.5 km downstream of confluence of P. L. Bureya rivers, 8.VII.2003, L.T. & L. Bureya rivers, 23,25.V.2003, A.T. DISTRIBUTION. This species has hitherto been known DISTRIBUTION. Northern Europe, the Urals, moun- only from Ningxia Province of China. This is the first record tains of South Siberia, Sakhalin, Maritime Prov.; Mongolia. in Russia! Parasisis amurensis Eskov, 1984 Neriene radiata (Walckenaer, 1841) MATERIAL. 3 ##, 4 $$, B.R., Bureya River Valley, ca. 210 MATERIAL. 1 $, B.R., Bureya River Valley, ca. 210 km NE of km NE of Chegdomyn, 3.5 km downstream of confluence of P. Chegdomyn, near confluence of P. & L. Bureya rivers, 11.VIII.2002, & L. Bureya rivers, 2.VI.2003, A.T. L.T.; DISTRIBUTION. This species has hitherto been known 1 #, Khabarovsk Prov., Verkhnebureinskii Distr., P. Bureya from southern part of Khabarovsk Prov., Sakhalin, Maritime River Valley, ca. 45 km SE of Sofiysk, near mouth of Medvezhiy Province. This is the northernmost locality of the species. River, 18–24.VI.2000, L.T.; 1 #, 1 $, Bureya River Valley, ca.160 km NE of Chegdomyn, 6 km upstream of Usman River, Poeciloneta vakkhanka Tanasevitch, 1989 28.VI.2001, L.T.; 1 $, L. Bureya River Valley, near mouth of Lan River, 5.VII.1999, L.T.; 1 $, Bureya River Valley, 2 km down- MATERIAL. 1 $, B.R., Bureya River Valley, ca. 210 km NE of stream of Yanyr River mouth, 13 km SW of Chekunda, Chegdomyn, 0.4 km downstream of confluence of P. & L. Bureya 19.VI.2003, L.T. rivers, 6–11.VII.2002, L.T. DISTRIBUTION. All over the Holarctic. DISTRIBUTION. Siberia from Yenisei River to Kolyma River. Notioscopus jamalensis Grese, 1909 MATERIAL. 3 ##, 4 $$, B.R., Bureya River Valley, ca. 210 Savignia badzhalensis Eskov, 1991 km NE of Chegdomyn, 3.5 km downstream of confluence of P. MATERIAL. 3 ##, B.R., Bureya River Valley, ca. 210 km NE & L. Bureya rivers, 31.V.2003, A.T. of Chegdomyn, 0.5 km downstream of confluence of P. & L. DISTRIBUTION. Siberia from Yamal Peninsula to Ci- Bureya rivers, 3–8.VII.2002, 22–27.V.2003, L.T.; 4 ##, 21 $$, sokhotia; mountains of South Siberia, Mongolia. same locality, 0.4 km downstream of confluence of P. & L. Bureya rivers, 22.V.–2.VI.2003, A.T.; 1 #, 2 $$, P. Bureya River Valley, ca. 213 km NE of Chegdomyn, 0.4 km upstream of confluence Obscuriphantes pseudoobscurus (Marusik, Hippa of P. & L. Bureya rivers, 1.VI.2003, A.T.; 1 #, Bureya River Valley, et Koponen, 1996) ca. 210 km NE of Chegdomyn, 3.5 km downstream of confluence MATERIAL. 1 $, B.R., Bureya River Valley, ca. 210 km NE of of P. & L. Bureya rivers, 4.VII.2003, L.T.; 1 #, same locality, 0.5 Chegdomyn, 2.5 km downstream of confluence of P. & L. Bureya km downstream of confluence of P. & L. Bureya rivers, 17– rivers, 31.V.2003, A.T. 22.VII.2003, L.T. DISTRIBUTION. From Yenisei to Chukotka, Cisokho- DISTRIBUTION. Known only from the southern part of tia, Kamchatka; eastern Kazakhstan, mountains of South Khabarovsk Province. The above are the northernmost local- Siberia, Sakhalin, Mongolia. ities of the species.

Oinia clava (Zhu et Wen, 1980) Savignia borea Eskov, 1988 MATERIAL. 1 $, B.R., Bureya River Valley, ca. 210 km NE of MATERIAL. 1 #, B.R., Bureya River Valley, ca. 210 km NE Chegdomyn, 2 km downstream of confluence of P. & L. Bureya of Chegdomyn, 3.5 km downstream of confluence of P. & L. rivers, 1.VI.2003, L.T. Bureya rivers, 22–27.V. 2003, A.T. DISTRIBUTION. Southern part of Khabarovsk Prov., DISTRIBUTION. Siberia from Yenisei River to Chukot- Maritime Prov.; China. This is the northernmost locality of ka, Cisokhotia, southern part of Khabarovsk Prov., Maritime the species. Province. Check-list of linyphiid spiders of the Bureinsky Nature Reserve 85

Savignia aff. yasudai (Saito, 1986) Tenuiphantes mengei (Kulczyñski, 1887) MATERIAL. 1 #, B.R., Bureya River Valley, near mouth of MATERIAL. 1 #, B.R., Bureya River Valley, ca. 210 km NE Levyi Ussomakh River, ca. 130 km NE of Chegdomyn, 11.X. of Chegdomyn, 3.5 km downstream of confluence of P. & L. 1999, L.T.; 1 $, P. Bureya River Valley, ca. 213 km NE of Bureya rivers, 4.IX.2002, L.T. Chegdomyn, 0.4 km upstream of confluence of P. & L. Bureya DISTRIBUTION. Widespread in Europe, also known rivers, 8–13.VII.2002, L.T. from the Caucasus; in Asia in West and Middle Siberia, COMMENTS. This seems to be a new species close to the Kamchatka, Commandor Islands; Middle Asia, mountains of Japanese S. yasudai. It will be described elsewhere. South Siberia, Maritime Prov., Sakhalin.

Scotinotylus kimjoopili Eskov et Marusik, 1994 Tenuiphantes nigriventris (L. Koch, 1879) MATERIAL. 3 $$, B.R., Bureya River Valley, ca. 210 km NE MATERIAL. 109 ## & $$, B.R., P. Bureya River Valley, ca. of Chegdomyn, 2.5 km downstream of confluence of P. & L. 213 km NE of Chegdomyn, 0.4 km upstream of confluence of P. Bureya rivers, 20–25.VIII. 2002, 25.V.2003, L.T., A.T. & L. Bureya rivers, 2&7.VIII.2002, 7–22.VIII.2002, 22.VII– DISTRIBUTION. Known from the southern part of Kha- 2.VIII.2002, 27.VIII–7.IX.2002, 7–11.IX.2002, L.T.; 176 ## $$, barovsk Prov., Maritime Prov. and Sakhalin. This is the Bureya River Valley, ca. 210 km NE of Chegdomyn, 0.5 km northernmost locality of the species. downstream of confluence of P. & L. Bureya rivers, 2–17.VIII– 11.IX.2002, L.T.; 5 ##, 14 $$, same locality, VIII–IX.2003, L.T.; Semljicola faustus (O. Pickard-Cambridge, 1900) 4 ##, 26 $$, P. Bureya River Valley, ca. 213 km NE of Chegdomyn, 0.4 km upstream of confluence of P. & L. Bureya MATERIAL. 1 #, Khabarovsk Prov., Verkhnebureinskii rivers, VII–VIII.2003, L.T. Distr., P. Bureya River Valley, ca. 45 km SE of Sofiysk, near DISTRIBUTION. Northern Europe; in Siberia from the mouth of Lednikovyi River, 29.VI.–4.VII.2000, L.T. DISTRIBUTION. Fennoscandia, the Urals, Middle Sibe- Urals to Cisokhotia, Kamchatka, Commandor, Kurile Is- ria; China. This is the northeasternmost locality of the spe- lands; eastern Kazakhstan, mountains of South Siberia, Mar- cies. itime Prov., Sakhalin, China, Japan. In the Nearctic, known from North Canada. Semljicola thaleri (Eskov, 1981) MATERIAL. 1 #, 2 $$, B.R., Bureya River Valley, ca. 210 km Theoneta saaristoi (Eskov et Marusik, 1991) NE of Chegdomyn, 2.5 km downstream of confluence of P. & L. MATERIAL. 3 ##, 5 $$, B.R., Bureya River Valley, ca. 210 Bureya rivers, 25.V.2003, A.T.; 15 ##, 1 $, same locality, 3.5 km km NE of Chegdomyn, 3.5 km downstream of confluence of P. downstream of confluence of P. & L. Bureya rivers, 29.VIII.2003, & L. Bureya rivers, 22, 27.V.2003, A.T.; 1 #, P. Bureya River L.T. Valley, ca. 213 km NE of Chegdomyn, near confluence of P. & DISTRIBUTION. Northeastern part of Europe (tundra); L. Bureya rivers, 1.VI.2003, A.T. in Siberia from the Urals to Cisokhotia, Kamchatka; eastern 1 #, Khabarovsk Prov., Verkhnebureinskii Distr., P. Bureya Kazakhstan, mountains of South Siberia, southern part of River Valley, ca. 45 km SE of Sofiysk, near mouth of Lednikovyi Khabarovsk Province. River, 29.VI–4.VII.2000, L.T. DISTRIBUTION. This species has hitherto been known only from the Kolyma River basin. The above are the south- Stemonyphantes sibiricus (Grube, 1861) westernmost localities of the species. MATERIAL. 1 #, B.R., Bureya River Valley, ca. 210 km NE of Chegdomyn, 2.5 km downstream of confluence of P. & L. Bureya rivers, 1–6.VII.2002, L.T.; 1 #, P. Bureya River Valley, ca. Tibioploides arcuatus (Tullgren, 1955) 213 km NE of Chegdomyn, 0.4 km upstream of confluence of P. MATERIAL. 2 $$, B.R., Bureya River Valley, ca. 210 km NE & L. Bureya rivers, 13–18.VII.2002, L.T.; 2 $$, Bureya River of Chegdomyn, 2.5 km downstream of confluence of P. & L. Valley, ca. 210 km NE of Chegdomyn, 0.5 km downstream of Bureya rivers, 25.V.2003, A.T. confluence of P. & L. Bureya rivers, 22–27.V. 2003, 6.IX.2003, DISTRIBUTION. Fennoscandia; in Asia from West Si- L.T. beria to the Kolyma River basin, Kurile Islands; mountains of DISTRIBUTION. Known from West Siberia to Chukot- South Siberia, southern part of Khabarovsk Prov., Maritime ka, Cisokhotia, Kamchatka, Kurile Islands; mountains of Prov., Sakhalin. South Siberia, Maritime Prov., Sakhalin; Mongolia. Tibioploides pacificus Eskov et Marusik, 1991 Tenuiphantes alacris (Blackwall, 1853) MATERIAL. 10 ##, 4 $$, B.R., P. Bureya River Valley, ca. MATERIAL. 1 $, Khabarovsk Prov., Verkhnebureinskii Dis- 213 km NE of Chegdomyn, 0.4 km upstream of confluence of P. tr., P. Bureya River Valley, ca. 45 km SE of Sofiysk, near mouth & L. Bureya rivers, 4–13.VII.2002, 7–12, 22.VIII.2002, 27.VIII– of Lednikovyi River, 11–17.VI.2000, L.T. 1.IX.2002, L.T.; 8 ##, Bureya River Valley, ca. 210 km NE of DISTRIBUTION. Widespread in Europe; in Siberia from Chegdomyn, 0.5 km downstream of confluence of P. & L. Bureya the Urals to Cisokhotia, Kamchatka; mountains of South rivers, 3–18.VII.2002, L.T.; 4 ##, 4 $$, same locality, 2.5–3.5 Siberia, Maritime Prov., Sakhalin. km downstream of confluence of P. & L. Bureya rivers, 31.V., 2.VI.2003, A.T.; 6 ##, 4 $$, P. Bureya River Valley, ca. 213 km Tenuiphantes ateripes (Tanasevitch, 1988) NE of Chegdomyn, 0.4 km upstream of confluence of P. & L. MATERIAL. 1 $, B.R., Bureya River Valley, ca. 210 km NE of Bureya rivers, 1.VI.2003, A.T.; 7 ##, 6 $$, Bureya River Valley, Chegdomyn, 0.4 km downstream of confluence of P. & L. Bureya ca. 210 km NE of Chegdomyn, 0.5 km downstream of confluence rivers, 25–30.VIII.2002, L.T. of P. & L. Bureya rivers, 27.V–2.VI.2003, 02–08, 17–22. 1 $, Khabarovsk Prov., Verkhnebureinskii Distr., P. Bureya VII.2003, 5&8.VIII.2003, 6.IX.2003, L.T.; 6 ##, 5 $$, P. Bureya River Valley, ca. 45 km SE of Sofiysk, near mouth of Medvezhiy River Valley, ca. 213 km NE of Chegdomyn, 0.4 km upstream of River, 14.VI.2000, L.T. confluence of P. & L. Bureya rivers, 2–13.VII.2003, 22–26.VIII, DISTRIBUTION. This species has hitherto been known 1&8.IX.2003, L.T. from the southern part of Khabarovsk Province as well as in DISTRIBUTION. Known from the Kolyma River basin Kurile Islands and Sakhalin. The above are the northwestern- and Sakhalin. The above are the westernmost localities of the most localities of the species. species. 86 A.V. Tanasevitch & L.A. Trilikauskas

Walckenaeria capito (Westring, 1861) Walckenaeria lepida (Kulczyñski, 1885) MATERIAL. 1 $, B.R., Bureya River Valley, ca. 210 km NE of MATERIAL. 1 $, B.R., Bureya River Valley, ca. 210 km NE of Chegdomyn, 2.5 km downstream of confluence of P. & L. Bureya Chegdomyn, 0.5 km downstream of confluence of P. & L. Bureya rivers, 11–16.VII.2003, L.T. rivers, 30.VIII–4.IX.2003, L.T. DISTRIBUTION. Widespread in Europe, also known 1 $, Khabarovsk Prov., Verkhnebureinskii Distr., P. Bureya from the Caucasus; in Siberia from the Urals to Cisokhotia; River Valley, ca. 45 km SE of Sofiysk, near Medvezhiy River mountains of South Siberia; Mongolia, Korea. Valley, 10–12.VI.2000, L.T. DISTRIBUTION. Siberia from the Urals to the Kolyma Walckenaeria fraudatrix Millidge, 1983 River basin, Cisokhotia, Kamchatka, Kurile Islands; moun- tains of South Siberia, southern part of Khabarovsk Prov., MATERIAL. 1 #, 2 $$, B.R., Bureya River Valley, ca. 210 km NE of Chegdomyn, 2.5 km downstream of confluence of P. & L. Maritime Prov., Sakhalin. Northern Nearctic. Bureya rivers, 23,25.V.2003, A.T. DISTRIBUTION. Siberia from Yenisei River to Chukot- Walckenaeria picetorum (Palmgren, 1976) ka, Cisokhotia; Baikal, southern part of Khabarovsk Prov., MATERIAL. 6 $$, B.R., Bureya River Valley, ca. 210 km NE Maritime Prov., Sakhalin; Mongolia. In the Nearctic, occurs of Chegdomyn, 2.5–3.5 km downstream of confluence of P. & L. in Alaska and Yukon. Bureya rivers, 22.V.–2.VI.2003, A.T.; 1 $, P. Bureya River Valley, ca. 213 km NE of Chegdomyn, near confluence of P. & L. Bureya rivers, 1.VI.2003, A.T. Walckenaeria karpinskii (O. Pickard-Cambridge, DISTRIBUTION. Fennoscandia, European tundra; in 1873) Siberia from the Urals to Cisokhotia, Kurile Islands; Altai MATERIAL. 3 ##, 4 $$, B.R., Bureya River Valley, ca. 210 Mts, southern part of Khabarovsk Prov., Sakhalin. km NE of Chegdomyn, 0.5–3.5 km downstream of confluence of P. & L. Bureya rivers, 23–28.VII.2002, 29.VIII.2002, 30.VIII– 4.IX.2002, 22–27.V. 2003, 07,10.IX.2003, L.T.; 2 ##, 19 $$, same Zornella cultrigera (L. Koch, 1879) locality, 2.5–3.5 km downstream of confluence of P. & L. Bureya MATERIAL. 1 #, 2 $$, B.R., Bureya River Valley, ca. 210 km rivers, 22.V.– 2.VI.2003, A.T., 2 ##, 6 $$, P. Bureya River Valley, NE of Chegdomyn, 0.5 km downstream of confluence of P. & L. ca. 213 km NE of Chegdomyn, near confluence of P. & L. Bureya Bureya rivers, 16–21.VII.2002, 30.VIII–9.IX.2002, L.T.; 1 $, P. rivers, 1.VI.2003, A.T.; 2 ##, 3 $$, Bureya River Valley, ca. 210 Bureya River Valley, ca. 213 km NE of Chegdomyn, near km NE of Chegdomyn, 0.5 km downstream of confluence of P. & confluence of P. & L. Bureya rivers, 1.VI.2003, A.T.; 1 $, Bureya L. Bureya rivers, 27.V–2.VI.2003, VII.2003, L.T. River Valley, ca. 210 km NE of Chegdomyn, 2.5 km downstream DISTRIBUTION. Fennoscandia, Spitsbergen, European of confluence of P. & L. Bureya rivers, 1–6.VII.2003, L.T.; 5 ##, tundra; in Siberia from the Urals to Chukotka, Cisokhotia, 2 $$, same locality, 0.5 km downstream of confluence of P. & L. Kamchatka; mountains of South Siberia, southern part of Bureya rivers, 11–16.VII.2003, 15.VIII–4.IX.2003, L.T. Khabarovsk Prov., Maritime Prov., Sakhalin; Mongolia, DISTRIBUTION. Northern Europe; in Siberia from the China. Widespread in the northern Nearctic. Urals to Chukotka, Cisokhotia; eastern Kazakhstan, moun- tains of South Siberia, southern part of Khabarovsk Prov.; Walckenaeria koenboutjei Baert, 1994 Mongolia. Widespread in the northern Nearctic. MATERIAL. 12 ##, 49 $$, B.R., Bureya River Valley, ca. 210 km NE of Chegdomyn, 0.5 km downstream of confluence of ACKNOWLEDGEMENTS. This work has been sup- P. & L. Bureya rivers, 2–11&16–26.VII.2002, 31.VII.–10.VIII.2002, ported in part by the Russian Foundation for Basic Research 15–30.VIII–9.IX.2002, L.T.; 8 $$, same locality, 2.5 km down- (RFFI), Project 02-04-49742. stream of confluence of P. & L. Bureya rivers, 1–6.VII.2002, L.T.; 1 #, 6 $$, Bureya River Valley, ca. 210 km NE of Chegdomyn, 3.5 km downstream of confluence of P. & L. Bureya rivers, References 22,27.V.2003, A.T.; 8 $$, same locality, 0.5 km downstream of confluence of P. & L. Bureya rivers, VII.2003, L.T.; 1 $, P. Bureya Eskov K.Yu. 1992. [New data on the fauna of the spider family River Valley, ca. 213 km NE of Chegdomyn, 0.4 km upstream of Linyphiidae (Aranei) of the Soviet Far East] // Fauna i confluence of P. & L. Bureya rivers, 1–6.VIII.2003, L.T. ecologiya paukov, skorpionov i lozhnoskorpionov SSSR. DISTRIBUTION. Mountains of South Siberia. These are Trudy Zool. instituta AN SSSR. 1990. T.226. P.51–54 [in the easternmost localities of the species. Russian, with English summary]. Loksa I. 1965. Ergebnisse der zoologischen Forschungen von Dr. Walckenaeria korobeinikovi Esyunin et Efimik, 1996 Z. Kaszab in der Mongolei. Araneae // Reichenbachia. Bd.7. MATERIAL. 4 ##, 5 $$, B.R., Bureya River Valley, ca. 210 S.1–32. km NE of Chegdomyn, 2.5 km downstream of confluence of P. Saito H. 1984. Descriptions of four new species of the soil & L. Bureya rivers, 23–31.V.2003, A.T.; 7 ##, 42 $$, same dwelling linyphiine spiders (Araneae: Linyphiidae) from the locality, VIII–4.IX.2003, L.T. Kyushu and Kanto Districts // Edaphologia. Vol.31. P.1–8. 3 ##, Khabarovsk Prov., Bureya River Valley, near mouth Tao Y., Li S.Q. & Zhu C.D. 1995. Linyphiid spiders of Changbai of Levyi Ussomakh River, ca. 130 km NE of Chegdomyn, Mountains, China (Araneae: Linyphiidae: Linyphiinae) // 7,11.X.1999, L.T. Beitr. Araneol. Bd.4. S.241–288. DISTRIBUTION. European tundra; in Siberia from the Trilikauskas L.A. 2001. Notes on the spider fauna (Aranei) of the Urals to the Kolyma River basin, mountains of South Siberia; upper reaches of Bureya River (Khabarovsk Province) // Mongolia, Japan. Arthropoda Selecta. Vol.9 (for 2000). No.3. P.215–220.