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The sac spiders of the family Clubionidae have a very confusing taxonomic history. Once this family was a large catch-all taxon for a large group of disparate collection of spiders, similar only in that they had eight eyes arranged in two rows, conical anterior spinnerets that touched and were wandering predators that built silken retreats, or sacs, usually on plant terminals, between leaves, under bark or under rocks. These are now recognized to include several families, some of which are more closely related to the three-clawed spiders, like lynx and wolf spiders, than to true "clubionoids."
Among the families formerly classified as sac spiders, some of which have common names including the words "sac spider", include:
- Anyphaenidae ( anyphaenid sac spider)
- Tengellidae ( tengellid spider )
- Zorocratidae ( zorocratid spiderZorocratid spiders are uncommon, somewhat wolf spider-like, wandering spiders. The eye arrangement is not like that of wolf spiders as the posterior eyes are not enlarged and the eyes are in two rows. Little is known of their biology, but they include abo)
- Miturgidae ( long-legged sac spiderLong-legged sac spiders space for image Scientific classification Kingdom: Animalia Phylum: Arthropoda Class: Arachnida Order: Araneae Suborder Araneomorphae Family Miturgidae Genera many, see text The long-legged sac spiders ( family Miturgidae include n)
- Corinnidae ( corinnid sac spider )
- Liocranidae ( liocranid sac spider )
as well as the remnant Clubionidae (now consisting of a little over 500 species in 15 genera worldwide). However "sac spider" used on its own should imply a member of the family Clubionidae.
In North AmericaNorth America is the third largest continent in area and the fourth ranked in population. It is bounded on the north by the Arctic Ocean, on the east by the North Atlantic Ocean, on the south by the Caribbean Sea, and on the west by the North Pacific Ocea the family as it is now recognised consists of only two genera, Clubiona and Elaver (formerly Clubionoides). Clubiona is nearly worldwide in distribution.
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Sac spiders, ghost spiders
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