Psephenopalpus browni, a new genus and species of Psepheninae (Coleoptera : Byrrhoidea : Psephenidae) from Mexico

摘要

Psephenopalpus browni, n. gen., n. sp. is described and illustrated from specimens collected in a stream running through a cloud forest in the Mexican town of Coatepec, Veracruz (1200 m). Psephenopalpus browni can be distinguished from other Psepheninae by the body shape, antennal length, and the size proportions of the phallobase and parameres (from Pheneps) and by the pronotum, maxillary palpi, and tarsi (from Psephenotarsis, Psephenops, Psephenus). Psephenopalpus appears to be more closely related to Psephenops than to other Psepheninae. A key for American Psepheninae genera is provided.