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Eresidae
Velvet spiders (family Eresidae) are a small group (about 100 species in 9 genera) of spiders almost entirely limited to the Old World, with the exception of one species known from Brazil. In Europe, some are commonly called the ladybird spiders. Description This family can sometimes be confused with the jumping spiders, or those in the Palpimanidae family. These spiders are usually black or brown in colour, though they can also have brighter colours as pictured. As their common name implies they can look quite smooth and velvety. They usually live in silken tubes under objects, or underground, but the genus '' Stegodyphus'' builds silken nests. Identification They can be distinguished from most species except the Penestomidae by their semi-rectangular carapace and clypeal hood. They can be distinguished from Penestomidae by the eye arrangement, straight anterior eye row and strongly recurved posterior eye row, with the median eyes close together. Social behavior Som ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stegodyphus Sarasinorum
''Stegodyphus sarasinorum'', also known as the Indian cooperative spider, is a species of velvet spider of the family Eresidae. It is native to India, Sri Lanka, Nepal, and Myanmar. This spider is a social spider that exhibits communal predation and feeding, where individuals live in large cooperatively built colonies with a nest or retreat constructed of silk woven using leaves, twigs, and food carcasses, and a sheet web for prey capture. Individual ''S. sarasinorum'' spiders that have attacked prey once are more likely to attack prey again, independent of their body size or hunger level. ''Stegodyphus'' is the only genus of the family Eresidae that is arboreal, not terrestrial. Description ''Stegodyphus sarasinorum'', like most Eresids, are short, stout spiders lined with several fine hairs. These fine hairs give the spiders an ash-colored appearance. The dorsal side of the abdomen is marked with three longitudinal white stripes and six pairs of dots, which are part of the spi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
