We describe Strigister Caterino, Tishechkin, and Proudfoot new genus (Coleoptera: Histeridae: Histerinae: Exosternini) for Strigister tecolotito Caterino, Tishechkin, and Proudfoot new species and for Strigister simoni (Lewis, 1889) new combination. These species are excluded from Phelister Marseul based on several unique characters, especially transverse slits on the prosternal keel and a single v-shaped annulus on the antennal club, and the genus is suggested to be more closely related to Baconia Lewis. Strigister tecolotito has been found exclusively in association with nests of the ferruginous pygmy-owl (Glaucidium brasilianum (Gmelin)) and the Eastern screech-owl (Megascops asio (L.)) in extreme southern Texas, USA. Strigister simoni is known only from the type specimen, lacking ecological data, from Venezuela.
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Vol. 67 • No. 4