Arthropoda Selecta 10 (3): 265272 © ARTHROPODA SELECTA, 2001 New faunistic records for the spiders of Buryatia (Aranei), with a description of a new species from the genus Enoplognatha (Theridiidae) Íîâûå ôàóíèñòè÷åñêèå íàõîäêè äëÿ ïàóêîâ Áóðÿòèè (Aranei), ñ îïèñàíèåì íîâîãî âèäà èç ðîäà Enoplognatha (Theridiidae) Yu.M. Marusik* & D.V. Logunov** Þ.Ì. Ìàðóñèê* & Ä.Â. Ëîãóíîâ** ** Institute for Biological Problems of the North, Far East Branch, Russian Academy of Sciences, Portovaya Str. 18, Magadan 685000 Russia. ** Èíñòèòóò áèîëîãè÷åñêèõ ïðîáëåì Ñåâåðà ÄÂÎ ÐÀÍ, Ïîðòîâàÿ 18, Ìàãàäàí 685000 Ðîññèÿ. ** The Manchester Museum, University of Manchester, Oxford Road, Manchester M13 9PL, UK. KEY WORDS: spiders, faunistic records, Transbaikalia, Buryatia, new species, Enoplognatha. ÊËÞ×ÅÂÛÅ ÑËÎÂÀ: ïàóêè, ôàíèñòè÷åñêèå íàõîäêè, Çàáàéêàëüå, Áóðÿòèÿ, íîâûé âèä, Enoplognatha. ABSTRACT: Faunistic notes are presented for 94 The study area is situated to the south-east of Lake spider species from Buryatia. One species is described Baikal (Map 1) and is limited by the boundaries of the as new: Enoplognatha monstrabilis Marusik et Lo- Buryatian Republic, an administrative unit of Russia. gunov, sp.n. (#$; from Buryatia and Chita Area). The Detailed data for all 20 localities visited and surveyed male of Alopecosa subrufa Schenkel, 1963, is newly (see Map 1) is as follows: identified and figured. Seventeen species are new records 1. Buryatia, Kabansk Distr., ca. 1 km S of Posolskoe, for Buryatia. Bolshay Rechka valley (51°58N, 106°21E), mixed forest, 530550 m a.s.l., 17.VI.2001, coll. D.V. Logunov. ÐÅÇÞÌÅ: Ïðåäñòàâëåíû ôàóíèñòè÷åñêèå çàìåò- 2. Buryatia, Kabansk Distr., ca. 20 km ENE of Vydrino, Osinovka River valley, (51°29N, 104°55E), mixed forest, êè î 94 âèäàõ ïàóêîâ èç Áóðÿòèè. Îëèí âèä îïèñàí 460480 m a.s.l., 17.VI.2001, coll. D.V. Logunov. êàê íîâûé: Enoplognatha monstrabilis Marusik et 3. Buryatia, Tunka Distr., ca. 6 km W of Tunka (51°44N, Logunov, sp.n. (#$; èç Áóðÿòèè è ×èòèíñêîé îáëàñ- 102°27E), sandy plots with Salix and Astragal, ca. 720 m òè). Ñàìåö Alopecosa subrufa Schenkel, 1963 âïåðâûå a.s.l., 1819.VI.2001, coll. D.V. Logunov. îïðåäëåëåí è èëëþñòðèðîâàí. Ñåìíàäöàòü âèäîâ 4. Buryatia, Kabansk Distr., ca. 4 km NE of Tankhoi, âïåðâûå íàéäåíû â Áóðÿòèè. Pereemnaya River mouth, sandy seashore of Lake Baikal (51°34N, 105°10E), ca. 460 m a.s.l., 19.VI.2001, coll. D.V. Logunov. Introduction 5. Buryatia, Kabansk Distr., ca. 10 km SE of Babushkin, Khamar-Daban Mt. Range (N macroslope), confluence of Pravay The species richness of the Transbaikalian spider and Levaya Mysovaya rivers (51°38N, 105°56E), mixed taiga fauna is currently recorded as 432 species [Danilov, forest, 670680 m a.s.l., 1920.VI.2001, coll. D.V. Logunov. 1999; Marusik et al., 2001], with their taxonomic/ 6. Buryatia, Kabansk Distr., ca. 25 km NE of Taezhnyi, Khamar-Daban Mt. Range (S macroslope), (51°24N, faunistic information scattered in more than 70 arachno- 105°54E), mixed taiga forest with Betula nana, 880900 m logical papers concerning Buryatia and Chita Area (for a.s.l., 2021.VI.2001, coll. D.V. Logunov. a brief review see Danilov [1999], etc.). This figure is by 7. Buryatia, Selenga Distr., to the west of Lake Gusinoe no means complete (cf. 614 species in Tuva [Marusik et Ozero, 45 km W of Murtoi railway station (51°12N, 106°16E), al., 2000]), therefore it is of no surprise that any new, dry bunchgrass stony steppe with larch trees along gorges, including relatively small, samples collected from that 670700 m a.s.l., 2122.VI.2001, coll. D.V. Logunov. area turn up new faunistic records and new species. 8. Buryatia, Dzhida Distr., ca. 10 km NE of Dodo-Ichetui (50°42N, 105°35E), dry stony steppe with Stellera chamae- This study deals with new faunistic data for 94 species, jasme, ca 920 m a.s.l., 2223.VI.2001, coll. D.V. Logunov. which were collected from Buryatia in JuneJuly 2001 by the 9. Buryatia, Zakamensk Distr., ca. 2 km SW of Burgui, second author and which are deposited in the zoological confluence of Burgui Khamnei and Dzhida Rivers (50°26N, collections of the Manchester Museum (MMUM). The type 103°45E), valley poplar forest, ca. 915 m a.s.l., 2324.VI. material of the new Enoplognatha species was distributed 2001, coll. D.V. Logunov. among the following repositories: JWC Personal collec- 10. Buryatia, Zakamensk Distr., ca. 5 km W of Kharatsai, tion of J. Wunderlich (Straubenhardt, Germany); MMUM Sarketui boundary (50°30N, 104°24E), sloping stony steppe, Manchester Museum, University of Manchester, Manchester, ca. 920 m a.s.l., 24.VI.2001, coll. D.V. Logunov. UK, Dr. D. V. Logunov; and ZMUM Zoological Museum 11.Buryatia, Zakamensk Distr., 45 km SW of Nizhnii of the Moscow State University, Moscow, Russia, Dr. K. G. Torei (50°30N, 104°46E), Dzhida River valley, valley mead- Mikhailov. All measurements are in mm. ow, ca. 750 m a.s.l., 24.VI.2001, coll. D. V. Logunov. 266 Yu.M. Marusik & D.V. Logunov Paratypes: 6 ## 4 $$ (ZMMU), 2 ## 1 $$ (MMUM) and 1 # 1 $$ (JWC), same locality and dates as holotype; 1 # (MMUM), Buryatia, Barguzin Distr., 1920 km E of Barguzin, near Lake Bolshoe Alginskoe (53°38N, 109°57E), ca. 475 m a.s.l., saltmarch with Acnatherum splendens stands, 3.VII.2001, coll. D.V. Logunov. DIAGNOSIS. This species is easily distinguished from other Enoplognatha species, by possessing heavily-armored male chelicerae bearing prominent outgrowths on all sides (including ventrally) (Figs 1114), by having ventral out- growths on the metatarsus I (or I and II) (Figs 1516) and by the structure of the copulatory organs (Figs 1724). On the basis of the shape of # chelicera (additional outgrowths/ teeth; Figs 1114), as well as the structure of the # palp (shape and height of the median apophysis, low situated seminal loop, the shape of the embolus and the radix; Figs 17 18) and of the epigyne (small copulatory openings and a pair of blackish spots; Fig. 21), the new species seems most closely related to E. mariae Bosmans et Van Keer, 1999 known from Crete and Rhodes [cf. Figs 2829 in Bosmans & Van Keer, 1999]. However, the epigyne of E. monstrabilis sp.n. differs in having much longer insemination ducts and the copulatory openings positioned marginally (Figs 2224). DISTRIBUTION. The species has so far been found in only two localities: Buryatia and Chita Area. Map 1. Collecting localities in the study area, Buryatia. DESCRIPTION. Measurements (male/female). Total length Êàðòà 1. Ìåñòà ñáîðà íà èçó÷àåìîé òåððèòîðèè, Áóðÿòèÿ. 3.636.5/4.30-5.25. Carapace: 1.552.63/2.132.63 long, 1.342.00/1.632.13 wide. Carapace length/tibia I ratio: 0.81 12. Buryatia, Dzhida Distr., ca. 4.5 km W of Tsagan-Usun 1.0/0.921.0. MALE. Carapace whitish (in small specimens) to (50°27N, 105°57E), dry steppe, ca. 700 m a.s.l., 25.VI.2001, light brown, with dark marginal stripes and a median stripe coll. D.V. Logunov. from posterior median eyes to fovea. Sternum and labium dark 13.Buryatia, Kyakhta Distr., 45 km N of Ust-Kiran grey-brownish or brownish, darker than carapace. Abdomen: (50°28N, 106°49E), sandy steppe with Salix sp., pines and dorsum with a folium formed by dark and whitish stripes and dunes, 580590 m a.s.l., 2526.VI.2001, coll. D.V. Logunov. elongated spots; venter uniformly dark grey, with marginal 14. Buryatia, Kyakhta Distr., ca. 5 km SSE of Ust-Kiran, whitish stripes; sides light brownish, with dense dark reticula- Chikoi River valley, Khilgantui boundary (50°22N, tion. Abdomen whitish in small specimens. Legs coloured as 106°51E), dry meadow and Salix stands, ca. 920 m a.s.l., 26 carapace, slightly darker distally on tibia I and IV. Chelicerae 27.VI.2001, coll. D.V. Logunov. bear many thick spine-like outgrowths and teeth, and one 15.Buryatia, Bichura Distr., ca. 3 km NNE of Uzkii Lug,tooth on ventral side of the fang (Figs 1114). Main tooth Chilok River valley (50°44N, 108°02E), valley meadows (spine on its inner side) bears a large tooth and two small ones. with Salix sp, ca. 650 m a.s.l., 27.VI.2001, coll. D.V. Logunov. Palpal structure as in Figs 1720, with long (high) median 16.Buryatia, ca. 24 km NW of Mukhorshibir, Tugnuiskayaapophysis, relatively long radix subdivided into two parts. Hollow (51°12N, 107°33E), dry steppe with pines along Large and small palps vary slightly in shape of seminal duct gorges, 760800 m a.s.l., 2829.VI.2001, coll. D.V. Logunov. (large specimen has longer loop), conductor and median 17. Buryatia, Pribaikalskii Distr., ca. 9 km SW of Turka, apophysis. Cymbial length varies from 0.53 to 0.64 (smallest/ shore of Lake Baikal (52°53N, 108°07E), among and under largest ratio 0.82); median apophysis height varies from 0.26 pebbles, ca. 650 m a.s.l., 12.VII.2001, coll. D.V. Logunov. to 0.33 (smallest/largest ratio 0.78); male palpal femur varies 18. Buryatia, Barguzin Distr., ca. 19 km E of Barguzin, from 0.83 to 1.24 (smallest/largest ratio 0.66). Cymbium ca. 9 km NE of Uro (53°37N, 109°57E), dry steppes with length/median apophysis height ratio seems to be very stable pines, 510-600 m a.s.l., 23.VII.2001, coll. D.V. Logunov. and varies from 1.96 to 2.14. 19.Buryatia, Barguzin Distr., 1920 km E of Barguzin, FEMALE. General colouration as male, but folium more near Lake Bolshoe Alginskoe (53°38N, 109°57E), ca.