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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Stegodyphus lineatus ： ウィキペディア英語版 Stegodyphus lineatus ''Stegodyphus lineatus'' is the only European species of the spider genus ''Stegodyphus.'' Male S. lineatus can grow up to 12 mm long, females can grow up to 15 mm. The colour can range from whitish to almost black. In most individuals the opisthosoma is whitish with two broad black longitudinal stripes. Males and females look similar, but the male is generally richer in contrast and has a bulbous forehead.〔Bellmann 1997〕 The species name refers to the black lines on the back of these spiders (not present in all individuals). ''S. lineatus'' is found in the southern Mediterranean region of Europe (south of Barcelona, southern Greece including Crete) and stretches up to Tajikistan. ==Behaviour== This species of spider can be found in desert habitats, especially in the Negev desert in Israel and dry mediterranean climates. These spiders build a web between twigs, mostly of low thorny shrubs. Stegodyphus lineatus prefer to build their webs in prey concentrated areas; in the desert, this usually means being near plant growth, which would attract prey like pollinating insects.〔 The web has a diameter of about 30 cm and is attached to a retreat made out of silk and covered with debris and food remains. The retreat is a cone-shaped structure about 5 cm long, which has an entrance at one end. The spiderlings hatch in this retreat, being released from their cocoon by their mother and then protected by her for a further two weeks. Web building behavior uses up time and energy, but provides an advantage in the ability to catch prey. For Stegodyphus lineatus fixing and constructing webs occurs only at night, but prey capture can occur during the day or at night. Both males and females can make webs to capture prey, but males may leave their web in search of mates.〔 Adult males can be found in spring. Males are known to exhibit infanticide, by killing the offspring of mated females. Females are able to lay more than one clutch, which means infanticide can provide the male an opportunity to mate with the female. Offspring are ''matriphagous'' meaning they eat their own mother. 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「Stegodyphus lineatus」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.