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Palpimanidae is a family of spiders, known as palp-footed spiders. The family is fairly small; it includes about 130 described species of ground-dwelling spider in 15 genera. ==Description== The most obvious features of the Palpimanidae are the front legs, which are disproportionately powerful and heavily sclerotised. The abdomen is round to oval, evenly sprinkled with short straight hairs that in some species are sufficiently dense to form a close-fitting coat, though most species look nearly smooth. Usually the cephalothorax is somewhat less obviously hairy. The abdomen is evenly rounded without conspicuous sculpting, and in many species is elongated into an olive shape twice as long as the cephalothorax, giving the spider a vaguely torpedo-shaped appearance. Instead of having six spinnerets like most spiders, the Palpimanidae have only two. Colour patterns generally are subdued and simple. A few genera, such as ''Diaphorocellus'' have light patches on a dark abdomen. Most others are brownish or reddish to dark in general colour, but as a rule the cephalothorax is more heavily sclerotised and darker than the abdomen, as well as glossier. There are eight eyes in two rows of four, but in some species the outer anterior and posterior eyes are close together, which has caused some people to think there are just six eyes. In some species the chelicerae have stimulatory organs, microscopic ridges, with pegs that scrape over them when they rub the chelicerae together. The probable function is to signal to each other in mating, though it might have some defensive role as well.〔Dippenaar-Schoeman, Ansie. Field Guide to the Spiders of South Africa. 2014 LAPA Publishers ISBN 978-0-7993-6018-9〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Palpimanidae」の詳細全文を読む スポンサード リンク
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