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''Cheiracanthium mildei'' is a species of spider from the family
''C. mildei'' usually has a pale green or tan body, with darker brown palpi and chelicerae. An adult ''C. mildei'' is usually in body size. Each leg ends in double claws, and the front pair is significantly longer (up to two times the size). The eyes have a tapetum lucidum that reflects back to the light source once lit, however the "canoe-shaped" tapetum they possess is incapable of forming sharp images, so the benefit of these tapetum is uncertain, although they may assist in navigation through the detection of the polarization of light from the sky. Although this spider can bite humans, the effects appear to be mild.
Cheiracanthiidae
''Cheiracanthiidae'' is a family of araneomorph spiders first described by Vladimir Wagner in 1887. The synonym Eutichuridae was used for a long time, but Cheiracanthiidae has priority. The largest genus currently recognized as belonging to this ...
. ''C. mildei'' is commonly known as the northern yellow sac spider, a name it partially shares with many other spiders of its genus.
Description
''C. mildei'' usually has a pale green or tan body, with darker brown palpi and chelicerae. An adult ''C. mildei'' is usually in body size. Each leg ends in double claws, and the front pair is significantly longer (up to two times the size). The eyes have a tapetum lucidum that reflects back to the light source once lit, however the "canoe-shaped" tapetum they possess is incapable of forming sharp images, so the benefit of these tapetum is uncertain, although they may assist in navigation through the detection of the polarization of light from the sky. Although this spider can bite humans, the effects appear to be mild.
Habitat and distribution
''C. mildei'' is native to Europe and North Africa through to Central Asia. It is introduced to the United States and parts of South America. It widespread across thenortheastern United States
The Northeastern United States, also referred to as the Northeast, the East Coast, or the American Northeast, is a geographic region of the United States. It is located on the Atlantic coast of North America, with Canada to its north, the Southe ...
and eastern Canada, and can be found outside, or more commonly inside houses. It is thought to have been introduced into America from Europe by English colonists.
Prey and predators
''C. mildei'' is a dominant predator of '' S. littoralis'' (a moth species) in Africa and Mid Eastern regions. The mechanism of predation include causing direct death by consuming the larvae and causing indirect death by dispersing larvae from its host plants.References
{{Taxonbar, from=Q739787 Spiders of Europe Spiders of North America Spiders described in 1839 mildei