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Web decoration
A web decoration or stabilimentum (plural: stabilimenta) is a conspicuous silk structure included in the webs of some species of orb-web spider. Its function is a subject of debate.
==Origin==
It is likely that the use of stabilimenta evolved independently at least nine different times.
''Araneus'' and ''Gasteracantha'' make silk stabilimenta, while ''Cyclosa'' and the closely related ''Allocyclosa bifurca'' make stabilimenta of silk, detritus, and their egg sacs. All those evolved independently from those of ''Argiope'', although some decorations of ''Allocyclosa bifurca'' closely resemble those of ''Argiope''.〔Eberhard 2006〕
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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