Thomisidae  Sundevall, 1833 / Xysticus  C. L. Koch, 1835   83 species

Xysticus obscurus  Collett, 1877

Description

Male palp with 2 striking tegular apophyses, the median is hammer-shaped with a massive prolateral branch and blunt tip, the lateral apophysis forms a partially opened tube with bevelled tip. Tibial apophysis bipartite, ventral apophysis large and square-edged, retrolateral apophysis very characteristic in lateral view with broad base and strikingly narrowed apically. Epigyne with circular epigynal groove, posterior side not dark. Vulva laterally with pocket-shaped depressions. Prosoma margined fine dark or black. Female: coloured in different velvety beige and sandy tones. Male: brown to dark brown. Cheeks in female with 3 longitudinal stripes and bright meandered in both sexes. Sternum brown or cream-beige medially and dark brown and yellow-brown on margin. Chelicerae brown proximally, beige and cream patterned distally, female: frontally with especially long spine and further robust spines, male: with long, fine spine. Legs brown to dark brown (female: sandy beige to brown beige), dorsally with fine, brown longitudinal stripes and median, white longitudinal line. Opisthosoma brown with irregular white margin and posteriorly thin, interrupted white to brown-beige transverse bands. Spinnerets brown and margined by fine white line.

Body length male: 5.8-6.8 mm
Body length female: 7.5-8.6 mm
Additional information

On shrubbery and trees, small bushes and low vegetation, only in higher levels, up to 2000 m

Distribution
  Presence
  No data
Global distribution (WSC 2024): North America, Europe, Russia (Europe to Far East)
Figures
Distribution List

"No references" does not mean that the species does not occur in this country, but that we have not yet inserted the reference for it. We are working on it.

Austria   (no references) ||| Belarus   (Ivanov, 2013) ||| Czechia   (Růžička & Řezáč, 2022a) ||| Estonia   (no references) ||| Finland   (Koponen et al., 2016) ||| Italy   (Pantini & Isaia, 2019) ||| Latvia   (Cera, 2018) ||| Lithuania   (no references) ||| Norway   (Aakra & Hauge, 2003) ||| Poland   (Rozwałka & Stanska, 2008) ||| Russia, Central   (no references) ||| Russia, Eastern   (no references) ||| Russia, Northern   (no references) ||| Russia, Western   (no references) ||| Slovakia   (no references) ||| Sweden   (Kronestedt, 2001) ||| Ukraine   (no references) |||
References

Aakra K, Hauge E (2003) Checklist of Norwegian spiders (Arachnida: Araneae), including Svalbard and Jan Mayen. Norwegian Journal of Entomology 50: 109-129 pdf

Biteniekytė M, Rėlys V (2012) The checklist of Lithuanian spiders (Arachnida: Araneae). Biologija 57: 148-158 pdf

Cera I (2018) The checklist of Latvian spiders (Arachnida: Araneae). Environmental and Experimental Biology 16: 139-152 pdf

Hirna A, Gnelitsa V, Zhukovets E (2016) A checklist of the spiders (Araneae) of the Chornohora Mountain massif (Ukrainian Carpathians). Arachnologische Mitteilungen 51: 16-38 pdf

Ivanov V V (2013) The checklist of Belarusian spiders (Arachnida, Araneae). Zoology and Ecology 4: 293-311 pdf

Jantscher E (2001a) Revision der Krabbenspinnengattung Xysticus C.L. Koch, 1835 (Araneae, Thomisidae) in Zentraleuropa. Dissertation, Univ. Graz, 328 pp., 81 pls. pdf

Koponen S, Fritzén N R, Pajunen T (2016) Checklist of spiders in Finland (Araneae). 6th version, December 2016, online at http://biolcoll.utu.fi/arach/checklist_of_spiders_in_Finland.htm pdf

Kronestedt T (2001) Checklist of Spiders (Araneae) in Sweden [Preliminary version February 2001] pdf

Løvbrekke H (unpubl.)

Morka G H (unpubl.)

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

Rozwałka R, Stanska M (2008) Check-list of spiders (Araneae) of Poland. 1. December 2008. online at http://www.arachnologia.edu.pl/en/species/8-spiders-of-poland.html pdf

Růžička V, Řezáč M (2022a) Seznam pavouků České republiky. List of spiders of the Czech Republic. Online at https://www.arachnology.cz/seznam-pavouku-cr-26.html and https://www.arachnology.cz/en/seznam-pavouku-cr-26.html pdf

Thaler K, Knoflach B (1995b) Xysticus obscurus Collett - eine arktoalpine Krabbenspinne neu für Österreich (Arachnida, Araneida: Thomisidae). Berichte des Naturwissenschaftlich-Medizinischen Vereins in Innsbruck 82: 145-152 pdf

WSC (2024) World Spider Catalog. Version 25.0. Natural History Museum Bern, online at http://wsc.nmbe.ch (22.01.2024) doi: 10.24436/2 pdf

Updates
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21-09-2022 Gallery image insert
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07-01-2019 Distribution update Detail
12-07-2018 Image insert
30-09-2015 Distribution update Detail
28-04-2014 Distribution update Detail