Trachyota Casey is a Synonym of Drusilla Leach (Coleoptera: Staphylinidae: Aleocharinae)

Trachyota Casey, 1906 is synonymized with Drusilla Leach, 1819, new synonym based on overall morphological similarity, resulting in the transfer of the two described species of Trachyota to Drusilla. This revision brings the total number of recognized North American Drusilla species to five, including four native species: Drusilla ashei Eldredge, 2012; Drusilla nearctica Eldredge, 2012; Drusilla cavipennis (LeConte, 1866), new combination; and Drusilla lativentris (Casey, 1906), new combination, as well as one adventive, widely distributed species, Drusilla canaliculata (Fabricius, 1787). A lectotype is designated for Falagria cavipennis LeConte, 1866, which is redescribed based on the lectotype. An updated key to North American species of Drusilla and genera of “Lomechusini” is provided.