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・ Chein-Dessus
・ Cheiracanthium
・ Cheiracanthium abbreviatum
・ Cheiracanthium africanum
・ Cheiracanthium algarvense
・ Cheiracanthium angulitarse
・ Cheiracanthium annulipes
・ Cheiracanthium campestre
・ Cheiracanthium cuniculum
・ Cheiracanthium effossum
・ Cheiracanthium elegans
・ Cheiracanthium fulvotestaceum
・ Cheiracanthium furculatum
・ Cheiracanthium gratum
・ Cheiracanthium ienisteai
Cheiracanthium inclusum
・ Cheiracanthium insulare
・ Cheiracanthium macedonicum
・ Cheiracanthium margaritae
・ Cheiracanthium mildei
・ Cheiracanthium occidentale
・ Cheiracanthium oncognathum
・ Cheiracanthium pennatum
・ Cheiracanthium punctorium
・ Cheiracanthium rupestre
・ Cheiracanthium salsicola
・ Cheiracanthus
・ Cheiradenia
・ Cheiragonidae
・ Cheiralgia paresthetica


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Cheiracanthium inclusum : ウィキペディア英語版
Cheiracanthium inclusum

''Cheiracanthium inclusum'', alternately known as the black-footed yellow sac spider or the American yellow sac spider (in order to distinguish it from its European cousin ''C. punctorium''), was formerly classified as a true sac spider (of the family Clubionidae), and then placed in the family Miturgidae, but now belongs to family Eutichuridae. It is a rather small pale yellow species that is indigenous to the Americas and can be found living in the foliage of forests and gardens but also can inhabit human homes. ''C. inclusum'' is also one of a handful of spiders found in North America whose bites are generally considered to be medically significant. ''C. inclusum'' is closely related to ''Cheiracanthium mildei'', an introduced species native to Europe which is similar in appearance and natural history and can also be found in North American homes.〔(【引用サイトリンク】url=http://www.ento.psu.edu/extension/factsheets/Spider/prowlingSpiders.htm )
==Identification==
Like all spiders, ''C. inclusum'' has two body segments: a cephalothorax (fused head and thorax) and an abdomen. In females, the body measures between 5 and 9mm and in males, 4 to 8mm. The leg span however can be up to with the front pair of legs being longer than the other 3 pairs.〔(【引用サイトリンク】url=http://ohioline.osu.edu/hyg-fact/2000/2060A.html )〕 Males tend to have a narrower body and a larger leg span than females.〔 ''C. inclusum'' gets its 2 common names (yellow sac and black-footed spider) from its appearance. It is a pale yellow-beige colour with dark brown markings on its palps, chelicerae (jaws) and on the ends of its tarsi (feet). There is also often an orange-brown stripe running down the top-centre of its abdomen.〔
''C. inclusum'' has 8 similarly sized eyes, distributed in 2 parallel horizontal rows. However, ocular input is of minor import, due to the absence of light during the spider's nocturnal activities. The spider relies more on its palps, sensory structures just behind the chelicerae, on the cephalothorax, to sense its environment.〔(【引用サイトリンク】url=http://www.ento.psu.edu/extension/factsheets/Spider/glossary.htm )

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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