A review of Canadian and Alaskan species of the genera Clusiota Casey and Atheta Thomson, subgenus Microdota Mulsant & Rey (Coleoptera, Staphylinidae, Aleocharinae)

Atheta (Microdota) formicaensis Klimaszewski & Webster, sp. n.: 61 habitus in dorsal view 62 male tergite VIII 63 male sternite VIII 64 median lobe of aedeagus in lateral view 65 median lobe of aedeagus in dorsal view 66 female tergite VIII 67 female sternite VIII 68 spermatheca. Scale bar for habitus = 1 mm; remaining scale bars = 0.2 mm.