Thomisidae  Sundevall, 1833 / Xysticus  C. L. Koch, 1835   82 species

Xysticus alpinus  Kulczyński, 1887

Description

Palp female: compact. Epigyne has only 2 independent, protruding, longish ovate, vertical, strongly sclerotised structures instead of an epigynal groove. Vulva consisting of 2 sac-like, glandular structures. Prosoma dark red-brown. Sternum brown to dark brown, longish oval, relatively densely provided with spines. Chelicerae dark brown, frontally densely spined. Legs brown to dark brown or orange-brown, distally darker, legs provided with very robust spines. Opisthosoma grey, beige to sand-brown, partly with small, yellow-brown spots. Spinnerets brown.

Body length female: 7.8-11.4 mm
Additional information

alpine grasslands, scree slopes, rock glaciers, >2000m

Distribution
  Presence
  No data
Global distribution (WSC 2021): Alps (Switzerland, Italy, Germany, Austria)
Phenology
JanFebMarAprMayJunJulAugSepOctNovDec
 male  female
Figures
Distribution List
Austria   (no references) ||| Germany   (no references) ||| Italy   (Pantini & Isaia, 2019) ||| Switzerland   (no references) |||
References

Ballarin F, Pantini P, Gobbi M (2018) Elevation to species level and redescription of Xysticus alpinus Kulczyński, 1887 stat. n. (Araneae, Thomisidae). Zootaxa 4500: 271-280 pdf

Jantscher E (2001a) Revision der Krabbenspinnengattung Xysticus C.L. Koch, 1835 (Araneae, Thomisidae) in Zentraleuropa. Dissertation: 1-328 pdf

Pantini P, Isaia M (2019) Araneae.it: the online catalog of Italian spiders, with addenda on other arachnid orders occurring in Italy (Arachnida: Araneae, Opiliones, Palpigradi, Pseudoscorpionida, Scorpiones, Solifugae). Fragmenta Entomologica 51: 127-152 pdf

WSC (2021) World Spider Catalog. Version 22.0. Natural History Museum Bern, online at http://wsc.nmbe.ch (29.05.2021) doi: 10.24436/2 pdf

Updates
16-10-2018 Image insert
16-10-2018 Distribution update Detail
07-03-2016 Image insert