Thomisidae  Sundevall, 1833 / Xysticus  C. L. Koch, 1835   105 species

Xysticus robustus  (Hahn, 1832)

Description

Male palp black-brown, knob-shaped, sclerotised structure originating centrally on bulbus. Tibial apophysis tripartite, one ventral, that is slender and apically bent hook-like, one intermediate, that is broad and massive in ventral view and slightly tapering toward the tip, retrolateral apophysis with distinct tip. Epigyne striking, dark and strongly sclerotised, embedded in bulges and folds. Vulva with narrow, bent entrance duct. Prosoma unicoloured red-brown, with slightly brighter, median area (median longitudinal line in females), partly with white or cream-yellow spots on inner side of eye protrusion of anterior median eyes. Females with dark and/or bright spots. Sternum black-brown. Chelicerae spined frontally. Legs with velvety surface, black-brown with dark red to wine-red tinge, brighter on tibia, dorsally darker than on other sides. Legs partly with white longitudinal line or bright spots. Opisthosoma unicoloured black-brown to slightly reddish dark brown with small yellow and black spots, with 5 sigilla.

Body length male: 5-6.9 mm
Body length female: 7-12 mm
Additional information

Under stones and in stony debris, short grass and moss, deciduous forests and meadows, from lowland up to subalpine region

Frequency: Not frequent

Distribution
  Presence
  No data
Distribution comment: Record for Norway: Løvbrekke (2016) pers. comm.
Global distribution (WSC 2018): Europe to Central Asia
Phenology
JanFebMarAprMayJunJulAugSepOctNovDec
 male  female
Figures
References

Bayram A, Kunt K B, Danişman T (2017) The checklist of the spiders of Turkey. Version 2017 [last updated 11 January 2017], online at http://www.spidersofturkey.info

Blagoev G, Deltshev C, Lazarov S, Naumova M (2017) The spiders (Araneae) of Bulgaria. Version: October 2017. National Museum of Natural History, Bulgarian Academy of Sciences. Online at http://www.nmnhs.com/spiders-bulgaria/ (accessed on 12.10.2017)

Braendegaard J (1972a) Edderkopper eller spindlere I. Danmarks Fauna 72

Heimer S, Nentwig W (1991) Spinnen Mitteleuropas. Paul Parey Berlin

Helsdingen P J van (2010a) Araneae. In: Fauna Europaea Database (Version 2010.1), online at www.european-arachnology.org

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

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

Kostanjšek R, Kuntner M (2015) Araneae Sloveniae: a national spider species checklist. ZooKeys 474: 1-91 pdf

Locket G H, Millidge A F (1951) British Spiders 1. Ray Soc London

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

Pantini P, Isaia M (2017) Checklist of the Italian spiders (version May 2017). online at http://www.museoscienzebergamo.it/web/index.php?option=com_content&view=category&layout=blog&id=96&Itemid=94

Roberts M J (1995) Spiders of Britain and Northern Europe. Collins Field Guide Bath

World Spider Catalog (2018) World Spider Catalog. Natural History Museum Bern, online at http://wsc.nmbe.ch, version 19.0, accessed on 14.01.2018. doi: 10.24436/2

Updates
29-08-2016 Distribution update Old value
07-03-2016 Image insert
28-04-2014 Distribution update Old value