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''Atypus karschi'' is a mygalomorph spider that lives in Japan, China, and Taiwan. In Japan, it is known as ''ji-gumo''. These spiders are black or dark brown and range from 17 to 20 mm. Like other spiders in its infraorder, it has fangs that point straight down rather than crossing. This spider has an unusual web. It spins a tube of silk that is hidden partially underground, with the portion above ground being covered in leaves and other debris. The spider waits for an insect to land or crawl onto the tube, then bites through the silk to pull the insect inside. The specific name honors arachnologist Friedrich Karsch. ==External links== * (English site with general information on ''A. karschi'' ) 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「Atypus karschi」の詳細全文を読む スポンサード リンク
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