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

Xysticus acerbus  Thorell, 1872

Description

Ventral tibial apophysis small, tip of lateral apophysis directing ventrally. Embolus broad, membranous tapering to a sclerotised spur. Epigyne with oval groove, all sides distinctly bordered. Vulva consists of 2 independent, longish oval, sac-like, compact structures. Prosoma hazelnut brown, dorsally with vague V-pattern. Eye region whitish. Sternum light brown to dark yellow-brown, longish oval. Chelicerae dark brown, with fine spines. Legs brown to dark brown with dark dorsal stripes. Opisthosoma female: dorsally ochre with slender, white transverse stripes and median longitudinal band (very variable). Male: grey to sand grey, ventrally sand brown or brown to dark brown.

Body length male: 4-6 mm
Body length female: 6-10 mm
Additional information

in sunny meadows, dry meadows and heathland

Frequency: Not frequent

Distribution
  Presence
  No data
Global distribution (WSC 2018): Europe to Central Asia, Russia (Europe to Far East)
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)

Bosmans R, Van Keer J, Russell-Smith A, Kronestedt T, Alderweireldt M, Bosselaers J, De Koninck H (2013) Spiders of Crete (Araneae). Nieuwsbr Belg Arachnol Ver 28: 1-147

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 (2018a) The checklist of the spiders of Turkey. Version 2017 [last updated 2 September 2018], online at http://www.spidersofturkey.info

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

Helsdingen P J van (1986a) The Porrhomma microphthalmum species-group. Bull Br Arachnol Soc 7: 11-16

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 (1953) British Spiders 2. Ray Soc London

Locket G H, Millidge A F, Merrett P (1974) British Spiders 3. Ray Soc London

Mikhailov K G, Propistsova E A (2017) On the spiders (Arachnida: Aranei) from Armenia. Arthropoda Selecta 26: 369-371 pdf

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 pdf

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
14-12-2017 Distribution update Old value
01-12-2013 Distribution update Old value
15-10-2013 Distribution update Old value
15-04-2013 Distribution update Old value