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

Xysticus ulmi  (Hahn, 1831)

Description

Male palp with short, bent tegular apophyses directed pliers-like toward each other. Tibial apophysis bipartite, ventral apophysis transverse and strongly bulged on outer edge. Retrolateral tapering off in ventral view, compact in lateral view. Embolus with stamp-like flattened tip. Epigyne oval with 2 protruding bulges. Vulva consists of 2 S-shaped bulges. Prosoma light brown to ochre, sometimes pale yellow, dorsally with triangle, flanked by light beige stripes, lateral dark brown-black bands. Male: similar, but darker patterned overall. Sternum round, yellow-brown or beige. Chelicerae frontally with bright or white transverse band and spines. Legs bright, yellow-brown to brown. Dorsally with irregular white longitudinal stripes, in addition partly distinctly dark patterned. Femur and patella I and II darker. Opisthosoma light brown to ochre, sometimes pale yellow, with folium consisting of light beige stripes, posteriorly with 3 bright transverse lines.

Body length male: 3-4 mm
Body length female: 5-8.3 mm
Additional information

in damp and dry areas, mainly in shore vegetation and wetland, on low vegetation, from lowland up to alpine region

Frequency: Not rare

Distribution
  Presence
  No data
Global distribution (WSC 2019): Europe, Turkey, Caucasus, Russia (Europe to Middle and South Siberia), Central Asia, China
Phenology
JanFebMarAprMayJunJulAugSepOctNovDec
 male  female
Figures
References

Azheganova N S (1968) Kratkii opredelitel' paukov (Aranei) lesnoi i lesostepnoi zony SSSR. Akademia Nauk SSSR: 1-149

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

Dondale C D, Kronestedt T, Buckle D J (2006) Confirmation of the presence of Xysticus chippewa in Europe (Araneae, Thomisidae). Bull Br arachnol Soc 13: 361-364

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.)

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

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

World Spider Catalog (2019) World Spider Catalog, version 20.0. Natural History Museum Bern, online at http://wsc.nmbe.ch (20.01.2019) doi: 10.24436/2

Updates
11-11-2018 Image insert