Taxon classification Animalia Coleoptera Carabidae

Genus Costitachys Erwin, 1974

Type species.

Costitachys inusitatus Erwin, 1974 .

Diagnosis.

Mentum without foveae; foretibia with apicolateral notch; body subdepressed, flavotestaceous, shiny; head with single pair of supraorbital setae; basal protarsomere of male dilated, medially dentiform; head (3), pronotum (5), and elytron (8) with prominent longitudinal carinae; ABL = 1.7-2.6 mm.

Distribution.

Known from sandy riparian habitats throughout the Amazon basin, from the eastern Andes of Ecuador and Perú to the Atlantic coast of South America (Erwin 1974; Erwin and Kavanaugh 1999, 2007).