Ground-crab-spider
Guides
Xysticus alboniger
ground crab spider
Xysticus alboniger is a species of ground crab spider in the family Thomisidae. It is found in the United States and Canada, with distribution records from Alberta, Manitoba, and Saskatchewan in Canada. The species was described in 1965 by Turnbull, Dondale, and Redner. As a member of the genus Xysticus, it exhibits the characteristic crab-like body form and ambush hunting behavior typical of ground crab spiders.
Xysticus ampullatus
Xysticus ampullatus is a crab spider species in the family Thomisidae, first described in 1965. It is distributed across the United States and Canada, with confirmed records from Manitoba. As a member of the genus Xysticus, it belongs to a group of ground-dwelling ambush predators commonly known as ground crab spiders.
Xysticus bicuspis
Xysticus bicuspis is a species of ground crab spider in the family Thomisidae. The genus Xysticus comprises ambush predators commonly known as ground crab spiders, which typically hunt without webs. Xysticus species are distinguished from similar crab spiders in the genus Coriarachne and Misumena by morphological features and habitat preferences. This species has been recorded from the northern United States and southern Canada, including Montana, Manitoba, and Saskatchewan.
Xysticus californicus
Xysticus californicus is a species of crab spider in the family Thomisidae, first described by Keyserling in 1880. The species occurs in the United States and Mexico. As a member of the genus Xysticus, it belongs to a group of spiders commonly known as ground crab spiders, which are characterized by their ambush hunting strategy and crab-like leg posture.
Xysticus discursans
Xysticus discursans is a species of crab spider in the family Thomisidae. It is found in North America, with records from Canadian provinces including Alberta, British Columbia, and Manitoba. As a member of the genus Xysticus, it shares the typical ground crab spider morphology and ambush-hunting behavior characteristic of this group.
Xysticus ellipticus
Xysticus ellipticus is a crab spider in the family Thomisidae, described in 1965. It occurs in the United States and Canada, with confirmed records from Alberta, Manitoba, and Saskatchewan. As a ground crab spider, it employs ambush hunting tactics typical of the genus.
Xysticus fraternus
Brotherly Ground Crab Spider
Xysticus fraternus is a species of ground crab spider in the family Thomisidae. It occurs in the United States and Canada. Like other members of the genus Xysticus, it is an ambush predator that does not construct webs to capture prey. The species is part of a diverse genus of crab spiders that includes many habitat generalists.
Xysticus funestus
mournful ground crab spider, sad ground crab spider, deadly ground crab spider
Xysticus funestus is a ground crab spider in the family Thomisidae, native to North America. It is one of many ambush-hunting crab spiders that rely on elongated front legs to capture prey. The species has been documented in field observations as an adult in early spring and has been recorded as prey for the spider wasp Dipogon calipterus. Despite its alarming common name "deadly ground crab spider," it poses no medical threat to humans.
Thomisidaeground-crab-spiderambush-predatorNorth-Americaballooningspider-wasp-preynon-medical-bite-riskspring-activityoverwintering-adultgravid-female-March-observationColoradoWisconsinDipogon-calipterus-prey-recordconcrete-path-habitatmailbox-post-observationforest-edgeleaf-litter-overwinteringmisleading-common-nameKeyserling-1880Xysticus gosiutus
Xysticus gosiutus is a species of crab spider in the family Thomisidae, first described by Gertsch in 1933. As a member of the genus Xysticus, it belongs to a group of ground-dwelling ambush predators commonly known as ground crab spiders. The species is recorded from the United States and Canada, with specific distribution records from Alberta and British Columbia. Like other Xysticus species, it is likely an ambush hunter that relies on camouflage and rapid leg extension to capture prey.
Xysticus locuples
Xysticus locuples is a species of crab spider in the family Thomisidae, first described by Keyserling in 1880. It is distributed across North America, with records from Canada and the United States including Alberta. As a member of the genus Xysticus, it belongs to a group of ground-dwelling ambush predators commonly known as ground crab spiders. The genus Xysticus is known for species that employ ballooning as a primary dispersal mechanism, particularly in spring and fall.
Xysticus obscurus
Xysticus obscurus is a species of ground crab spider in the family Thomisidae, first described by Collett in 1877. It is a holarctic species with a broad distribution spanning North America, Europe, and across Russia from European Russia to Siberia. As a member of the genus Xysticus, it is an ambush predator that does not construct webs for prey capture. The species has been documented in Alberta, Canada, and is part of a genus known for ballooning behavior as a dispersal mechanism.
Xysticus pellax
Xysticus pellax is a species of crab spider in the family Thomisidae, first described by O. Pickard-Cambridge in 1894. It is native to North America, with records from Canada and the United States. Like other members of its genus, it is a ground-dwelling ambush predator.
Xysticus possiblefunestus
Xysticus possiblefunestus is a species of crab spider in the family Thomisidae. The genus Xysticus comprises ground-dwelling crab spiders that are ambush predators, typically found in terrestrial habitats across the Northern Hemisphere. This species belongs to a diverse genus with over 360 described species worldwide. Like other Xysticus species, it likely exhibits the characteristic crab-like posture with enlarged front legs used for seizing prey. The specific epithet "possiblefunestus" suggests taxonomic uncertainty or similarity to Xysticus funestus, a European species.
Xysticus punctatus
Punctated Ground Crab Spider
Xysticus punctatus is a ground-dwelling crab spider in the family Thomisidae. It is found in the United States and Canada, with records from provinces including Alberta, British Columbia, and Manitoba. As a member of the genus Xysticus, it shares the characteristic crab-like posture and ambush hunting strategy of its relatives.
Xysticus robinsoni
Xysticus robinsoni is a species of ground crab spider in the family Thomisidae, first described by Willis J. Gertsch in 1953. The species belongs to a genus of ambush predators characterized by their crab-like posture and enlarged front legs used to seize prey. Like other Xysticus species, it is likely a sit-and-wait predator that does not construct webs for prey capture. The species occurs in the United States and Mexico, though specific details about its biology remain poorly documented.