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The spiders of the genus Xysticus do not build webs; like most Thomisidae they are ambush hunters and prefer to hunt near the ground (hence the common name "ground crab spiders"). They move slowly, and commonly hunt by stationing themselves in a high-traffic area and grabbing whatever arthropod passes close enough.
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 ...
Xysticus elegans is a medium-sized crab spider. Its body length is described as about 8-12 mm and 4-5 mm for females and males respectively. [1] [2] X. elegans is described as showing strong sexual dimorphism in size; Males in this species tend to be less than half the size of females. [1]
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.
World War II brought the U.S. Army and Navy, and their supplies, to Dutch Harbor at the Dutch Harbor Naval Operating Base and Fort Mears, U.S. Army. The first army troops arrived in June 1941 and the navy air base was finished in September 1941. During the war, Dutch Harbor was also used to house refugees evacuated from other Aleutian Islands.
The Thomisidae are a family of spiders, including about 170 genera and over 2,100 species. The common name crab spider is often linked to species in this family, but is also applied loosely to many other families of spiders. Many members of this family are also known as flower spiders or flower crab spiders. [3]
What happened to Alaska's crabs? Between 2018 and 2021, there was an unexpected 92% decline in snow crab abundance, or about 10 billion crabs. The crabs had been plentiful in the years prior ...
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]