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

Xysticus luctator  L. Koch, 1870


Male palp dark brown. Median bulbal apophysis with 2 tips arranged rectangularly. Tibial apophysis bipartite, massive ventral and inconspicuous retrolateral apophysis. Epigyne with wide-oval epigynal groove, with broad, protruding septum. Vulva with anterior part consisting of 2 funnel-shaped, very dark parts, broadened posteriorly. Prosoma strongly bulged, round. Female: light beige to sandy-brown without distinct pattern, but with 2 dark moon-like spots on posterior margin of prosoma. Male: black-brown, eye field bright, 2 dark brown moon-like spots (sometimes 2 additional bright ones) on posterior margin of prosoma. Sternum longish oval to shield-shaped, brown to light brown with cream spots. Chelicerae brown with bright transverse band and one longer spine (female frontally many short spines). Legs dark brown, contrast-rich with white spots on junction femur/patella, distal leg segments brighter. Females overall with inconspicuous, bright legs. Metatarsus I and II and tibia with strikingly high number of spines. Opisthosoma female: beige, without pattern. Males: brown to dark brown, with thin cream margin and white, interrupted transverse bands in posterior third.

Body length male: 5.9-8.4 mm
Body length female: 7-10 mm
Additional information

from lowland to mountainous level, in habitats with poor vegetation

Frequency: Not frequent

  No data
Global distribution (WSC 2019): Europe, Caucasus, Russia (Europe to South Siberia), Kazakhstan
 male  female

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14-01-2017 Image insert
09-05-2016 Image insert
01-12-2013 Distribution update Old value