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Philoponella
''Philoponella'' is a genus of uloborid spiders. Like all Uloboridae, these species have no venom.
==Cooperation==
Some species (among them ''P. congregabilis'' and ''P. oweni'') construct communal webs, but nevertheless do not capture prey cooperatively. However, a few species, such as ''P. raffrayi'', are known to cooperate in prey capture. A colony of ''P. raffrayi'' is composed of individual orb-webs connected by non-adhesive silk. Its average body length is about 6 mm in females and 3 mm in males. Adult females are orange for at least a week after the final molt, and become black a few weeks later. In these colonies, ''Argyrodes'' and ''Portia'' species can also be found, acting as kleptoparasites and predators, respectively. When relatively large prey is trapped on the periphery of the colony, two females cooperate in about 10% of cases in wrapping it, which increases their chances of success about fourfold. However, only one female then feeds on this prey. Cooperative capture is similar in ''P. republicana'', where more than two individuals may work together.〔Matsumoto 1998〕
''Philoponella vicina'' uses its silk to compress and crush its prey.〔Eberhard, William G.; Barrantes, Gilbert & Weng, Ju-Lin (2006). "Tie them up tight: wrapping by ''Philoponella vicina'' spiders breaks, compresses and sometimes kills their prey". ''Naturwissenschaften'' 95(5): 251-254. — (HTML abstract )〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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