S. Mahunka szerk.: Folia Entomologica Hungarica 49. (Budapest, 1988)

FOLIA ENTOMOLOGICA HUNGARICA ROVARTANI KÖZLEMÉNYEK XLIX 1988 p. 185-196 Some new Lepthyphantes Menge (Aranei, Linyphiidae) from Mongolia and the Soviet Far East By A. V. TANASEVITCH (Received December 20, 1987) Abstract: Eight new Lepthyphantes are described: L. pepticus sp. n. from eastern Mongolia, L. camtchadalicus sp. n. from Kamchatka, L. maritimus sp. n. and L. ussuricus sp. n. from the southern part of the Maritime Prov. , L. epigynatus sp. n. and L. aculifer sp. n. from Kolyma Upland, eastern Siberia, L. ateripes sp. n. and L. enormitus sp. n. from northern Sakhalin. New faunistic records have been given for some Lepthyphantes in the Far East. The present paper puts on record additional eight new Lepthyphantes from the E Palaearctic, being an important addendum to the fauna just reviewed by TANASEVITCH et ESKOV (1987) and TANASEVITCH (1987). Type materials have been shared between the collections of the Zoological Museum of the Moscow State University (ZMMU) and Hungarian Natural History Museum, Budapest (HNHM). Non-type materials are deposited at the ZMMU. The following abbreviations have been accepted in the text and figures: Fe - femur, Ti - tibia, Mt - metatarsus, Tm - position of metatarsal trichobothrium, E - embolus, R radix, L - lamella characteristica, TA - terminal apophysis. The chaetotaxy is given in the following formula: Til: 2-1-1-4. This stands for: tibia I has two dorsal, one pro-, one retrolateral and four ventral spines (the apical spines are herewith disregarded). All measurements are given hereinafter in mm. Scale - 0. 1 mm. DESCRIPTION OF THE NEW SPECIES Lepthyphantes aculifer sp. n. (Figs 1-4) Holotype: 1 6 (ZMMU), USSR, Magadan Area, upper reaches of Kolyma River, Bolshoi Annachag Mt. Ridge, near Sibit-Tyellakh, VII-VIII. 1986; leg. Yu. MARUSIK. - Paratypes: 1 <5, 2 g (ZMMU), same locality and date, leg. Yu. MARUSIK. Description: Male. Total length 2. 63. Carapace 1.25 long, 0. 95 wide, brown, with a darker margin. Chelicerae 0.50 long. Legs pale brown, without dark rings. Chaetotaxy: Fel: 0-1-OTO; Til: 2-1-1-4, 11:2-1-1-4(3), III-IV: 2-1-1-2(1); Mtl-III: 1-0-0-0, IV: 1-0-0-1. Tml 0. 21. Legi - 5. 81 long (1. 50 + 0. 38 + 1. 45 + 1. 50 + 0. 98), IV - 5. 24 long (1. 38 + 0. 33 + 1.35 + 1. 38 + 0. 80). Palp (Figs. 1-2): Tibia elongated ventro-retrolaterally as a cone. Cymbium with a saddle-shaped proximal outgrowth. Paracymbium medially with a dark comb producing a small cavity with upper lobe. Lamella characteristica as a long and narrow ribbon, terminally narrowly pointed. Abdomen 1. 50 long, 1.00 wide, dorsally pale, shot with pink, with a dark, regularly attenuating median stripe flanked by a few dark spots; closer to ventrum with a pair of pale lateral stripes fusing caudally with dorsal pale patch.