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''Marpissa muscosa'' is a species of jumping spider. Females reach about 8–13 mm length, males only 6–8 mm. Both sexes are coloured grey to brown. The whole spider has a furry appearance and is flattened in shape. The species builds a kind of nest under the bark of dead trees. Up to 100 of these nests can occur side by side. This spider demonstrates a social hierarchy: weaker animals will acknowledge their inferiority by strutting their front legs and slowly retreating from the scene. ==Distribution== ''M. muscosa'' lives in the Palaearctic. Though rare in England, it is found throughout the country, more in the south and east. The species is widespread in northern Europe. 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「Marpissa muscosa」の詳細全文を読む スポンサード リンク
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