Thomisidae  Sundevall, 1833 / Xysticus  C. L. Koch, 1835   78 species

Xysticus erraticus  (Blackwall, 1834)


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

  No data
Global distribution (WSC 2019): Europe, Turkey, Caucasus (Russia)
 male  female

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28-06-2019 Distribution update Old value
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