
Scydmaeninae are a subfamily of small beetles, commonly called ant-like stone beetles or scydmaenines. These beetles occur worldwide, and the subfamily includes some 4,500 species in about 80 genera. Established as a family, they were reduced in status to a subfamily of Staphylinidae in 2009 Many scydmaenine species have a narrowing between head a...
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http://en.wikipedia.org/wiki/Scydmaenidae

Scydmaenidae is a family of minute beetles measuring between 0.7 and 2.3 mm in length, have an elongate body with fine, loose bristles on the back and the antennae have clavate tips. The members of the family live chiefly in moss and damp fallen leaves, in dung, in rotting wood, under bark or under stones, with a few species living in ants' or mamm...
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http://www.probertencyclopaedia.com/browse/BS.HTM
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