Tachyina (Polyderis), Motschulsky, 1862

Boyd, Olivia F. & Erwin, Terry L., 2016, Taxonomic review of New World Tachyina (Coleoptera, Carabidae): descriptions of new genera, subgenera, and species, with an updated key to the subtribe in the Americas, ZooKeys 626, pp. 87-123 : 105

Taxon classification Animalia Coleoptera Carabidae

Genus Polyderis Motschulsky, 1862

Type species.

Tachys brevicornis Chaudoir, 1846

Diagnosis.

Very small (<2 mm), mentum bearing paired foveae; pronotum convex, posterior angles squarely rounded or slightly obtuse; antennae short, submoniliform; i8 reduced, barely impressed, visible apically; ARG very short.

Distribution.

Old World and Australia, with a single species ( Polyderis laeva ) in the Americas.