Philodromus Alascensis
''Rhysodromus alascensis'' is a species of running crab spider in the family Philodromidae 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). It contains over .... It is found in North America, Russia (Siberia), Kazakhstan, and China. References Philodromidae Spiders described in 1884 {{philodromidae-stub ...
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Philodromidae
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). It contains over 500 species in thirty genera. The most common genus is '' Philodromus'' which is widespread, similar to ''Ebo''. Other common genera include the elongate grass-dwelling ''Tibellus'' and the widespread ''Thanatus'', which includes the house crab spider that commonly captures flies on and in buildings. Description Philodromids have a crab-like shape due to the first two pairs of legs being oriented sideways (laterigrade). This is superficially similar to the "true" crab spiders (Thomisidae), such as ''Misumena vatia,'' but these families are not as closely related as previously thought. Unlike crab spiders, the legs are generally similar in size, though the second leg pair may be significantly longer than the first pair. This is most ev ...
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