Thomisidae  Sundevall, 1833 / Xysticus  C. L. Koch, 1835   106 species

Xysticus erraticus  (Blackwall, 1834)

Description

Male palp with robust lateral tegular apophysis, passing horizontally, directed prolaterally. Median tegular apophysis small, with short shaft. Tibial apophysis lies ventrally in the middle and is broad basally, but narrows toward the tip, pointing toward apical and retrolateral direction respectively. The second apophysis originates retrolaterally. It is broad, robust and has a cone-shaped process. Embolus with knob-like thickened tip. Epigyne with characteristic hood-shaped anterior part, lateral parts arranged semicircularly, often plugged with dark glandular secretion. Vulva elongated with detached receptacula. Prosoma sandy to brown, with vague median stripe and 2 broad lateral stripes, eye region bright with distinct black-blue and white background of eyes. Chelicerae brown, and beige patterned, with one robust spine on each chelicera. Legs sandy, to brown. Femur and patella I-II dark brown, red-brown or brown-black. Opisthosoma very bright (almost white sometimes) with dark brown-black spots. Males: dark brown-black, with cream-coloured pattern.

Body length male: 4-5 mm
Body length female: 6-8 mm
Additional information

In low vegetation, often under stones or in heathland and semi-dry meadows, occurring from lowland to mountain region

Distribution
  Presence
  No data
Global distribution (WSC 2019): Europe, Turkey, Caucasus (Russia)
Phenology
JanFebMarAprMayJunJulAugSepOctNovDec
 male  female
Figures
References

Blagoev G, Deltshev C, Lazarov S, Naumova M (2018) The spiders (Araneae) of Bulgaria. Version: August 2018. National Museum of Natural History, Bulgarian Academy of Sciences. Online at http://www.nmnhs.com/spiders-bulgaria/ (accessed on 10.9.2018)

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

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

Danışman T, Kunt K B, Özkütük R S (2019) The checklist of the spiders of Turkey. Version 2018 [last updated 1 January 2019], online at http://www.spidersofturkey.info

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

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

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

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

Løvbrekke H (unpubl.)

Mikhailov K G (2013) The spiders (Arachnida: Aranei) of Russia and adjacent countries: a non-annotated checklist. Arthropoda Selecta, Supplement 3: 1-262

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 (2018) Checklist of the Italian spiders (version June 2018). online at http://www.museoscienzebergamo.it/web/index.php?option=com_content&view=category&layout=blog&id=96&Itemid=94 pdf

Pantini P, Sassu A, Serra G (2013) Catalogue of the spiders (Arachnida Araneae) of Sardinia. Biodiversity Journal 4: 3-104

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

World Spider Catalog (2018) World Spider Catalog, version 19.5. Natural History Museum Bern, online at http://wsc.nmbe.ch (15.07.2018) doi: 10.24436/2

Updates
02-10-2018 Image insert
12-07-2018 Image insert
20-06-2016 Image insert
21-10-2015 Distribution update Old value
25-06-2013 Distribution update Old value