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Xysticus funestus, the mournful ground crab spider, the sad ground crab spider or the deadly ground crab spider is a species of ground crab spider in the family Thomisidae. [1] [2] It is found in North America. [2] [3] [4] Despite one of the suggested common names - ‘deadly ground crab spider’, Xysticus funestus poses no threat to humans ...
A ground crab spider with earthy coloration. Most species of the genus Xysticus are small to medium sized spiders. They show a sexual dimorphism in size. Females of typical species reach a maximum of 10 millimetres (0.39 in) of body length, while their males are about 3–5 millimetres (0.12–0.20 in) long, about half the size of the females.
The spiders of Thomisidae are not known to be harmful to humans. However, spiders of a distantly related genus, Sicarius, which are sometimes referred to as "crab spiders", or "six-eyed crab spiders", are close cousins to the recluse spiders, and are highly venomous, though human bites are rare.
Xysticus cristatus is an ambush hunter which spends much time sitting still, with its fore-legs spread wide, waiting for insects to blunder into them. [3] In grass it adopts a flexible hunting position either at the tips of vegetation, such as flowerheads, or on the ground surface and as a result, the prey taken is varied and is made up of flying insects, including bees and butterflies.
Ground spiders comprise Gnaphosidae, the seventh largest spider family with over 2,000 described species in over 100 genera distributed worldwide. There are 105 species known to central Europe , [ 1 ] and common genera include Gnaphosa , Drassodes , Micaria , Cesonia , Zelotes and many others.
Thomisus is a genus of crab spiders (family Thomisidae) with around 142 species described.The genus includes species that vary widely in their ecology, with some that are ambush predators that feed on insects visiting flowers.
How quickly venomous flying spiders are invading the U.S. From 2014 to 2022, Joro spiders spread between 50 and 80 miles from the location where they were originally spotted. At around 10 miles ...
Philodromidae, also known as philodromid crab spiders and running crab spiders, is a family of araneomorph spiders first described by Tord Tamerlan Teodor Thorell in 1870 (then known as subfamily Philodrominae within Thomisidae). [1] It contains over 500 species in thirty genera. [2]