Gymnusa
''Gymnusa'' is a genus of rove beetles in the subfamily Aleocharinae and tribe Gymnusini. The coloration of this genus is highly coherent, with most species black and a few dark, dark brown. They range in length from 4.2 millimeters to 6.5 millimeters. Gymnusa live in semi-aquatic and aquatic environments, but never marine: they live in detritus in swamps, in bogs, streams, and slow-moving rivers. They live in the Nearctic and Palearctic in Europe and North America. References

Aleocharinae genera Beetles of North America Beetles of Europe {{Staphylinidae-stub ...
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Gymnusa Konopackii
''Gymnusa'' is a genus of rove beetles in the subfamily Aleocharinae and tribe Gymnusini. The coloration of this genus is highly coherent, with most species black and a few dark, dark brown. They range in length from 4.2 millimeters to 6.5 millimeters. Gymnusa live in semi-aquatic and aquatic environments, but never marine: they live in detritus in swamps, in bogs, streams, and slow-moving rivers. They live in the Nearctic and Palearctic in Europe and North America. References

Aleocharinae genera Beetles of North America Beetles of Europe {{Staphylinidae-stub ...
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