Linyphiidae  Blackwall, 1859 / Bolyphantes  C. L. Koch, 1837   9 species

Bolyphantes lagodekhensis  (Tanasevitch, 1990)

Description
Male

Palpus patella with a thick, tapering and pointed spine, denticles absent. Cymbium with a ridge-shaped posterodorsal outgrowth. Postero-lateral branch of paracymbium rather thin and sclerotized. Paracymbium with two teeth in its proximal part. Terminal apophysis with several branches and tapering outgrowths. Lamella characteristica large and wide, consisting of a strong main branch and an attached sail-like membranous part. Serrate area of embolus with a long and narrow needle-shaped outgrowth.

Prosoma 1.05 long, 0.83 wide, pale brown, with a grey median spot and a narrow margin tinged with black. Chelicerae 0.46 long, unmodified; anterior margin with two teeth, posterior unarmed. Stridulating files fine. Legs pale brown, without median bands (TmI 0.21). 

Opisthosoma 1.23 long, 0.78 wide, dark grey, heart region pale, dorsal area flanked by pale paramedian spots connected to each other across the dorsum with thin slanting bands behind the pale region. Spinnerets dark grey.

Body length male: 2.31 mm
Female

Epigyne with a short narrow pseudoscape. Lateral lobes of scape very long, their distal parts are partly covering of pseudoscape. Stretcher well developed, long and narrow.

Prosoma 0.88 mm long, 0.71 mm wide, light brown, with thin, dark fringe and thin foveae. Eyes with black fringes. Chelicerae 0.39 long, anterior margin with three teeth, posterior with four small teeth near base of fang. Stridulating files fine. Legs light brown, not annulated, in some specimens tibia with with a thin proximal white band (TmI 0.21).

Opisthosoma 1.65 long, 1.12 wide, coloration as in male, sometimes uniformly grey.

Body length female: 2.46 mm
Additional information

Alpine and subnival zones, under slate plates. Similar to  Bolyphantes distichus (Tanasevitch, 1986) and B. distichoides Tanasevitch, 2000

Distribution
  Presence
  No data
Global distribution (WSC 2019): Georgia
Phenology
JanFebMarAprMayJunJulAugSepOctNovDec
 male  female
Figures
References

Otto S (2017) Caucasian spiders. A faunistic database on the spiders of the Caucasus Ecoregion. Database version 08.2017. Internet: caucasus-spiders.info.

Otto S, Tanasevitch A V (2010) First description of the male of Lepthyphantes lagodekhensis Tanasevitch, 1990 (Arachnida: Aranei: Micronetinae). Arthropoda Selecta 19(3): 203-206 pdf

Otto S, Tanasevitch A V (2015) A new species of Incestophantes Tanasevitch, 1992 from the high mountains of the Caucasus Major (Arachnida: Aranei: Linyphiidae). Arthropoda Selecta 24: 107-112 pdf

Tanasevitch A V (1990)  The spider family Linyphiidae in the fauna of the Caucasus (Arachnida, Aranei). in B. R. Striganova (ed.), Fauna nazemnykh bespozvonochnykh Kavkaza. Moscow, Akaedemia Nauk, pp. 5-114

World Spider Catalog (2019) World Spider Catalog, version 20.0. Natural History Museum Bern, online at http://wsc.nmbe.ch (20.01.2019) doi: 10.24436/2

Updates
17-04-2015 Image insert