Abstract
The platyscelis group of the carabid genus Agra Fabricius, an equatorially centered lineage, consists of 30 species that have a composite range extending from the isthmus of Panamá to French Guiana south into Brazil and Bolivia. The majority of species are found in the Amazon Basin. Structural features of both body and appendages are convergent with other carabid beetles that are known to dwell in ant nests, however, no life history of any Agra species is known. The following 12 specific taxa of the platyscelis group are described as new (type locality in parenthesis): A. tingo new species, (PERU, Huánuco, 13 km S Tingo Maria, Tambillo, Chico Canyon, 09°15′S, 76°23′W); A. biolat new species, (PERU, Madre de Dios, 30 air km SW Puerto Maldonado, Rio Tambopata Res., 12°50′S, 69°20′W); A. aeris new species, (PERU, Madre de Dios, BIOLAT Biodiversity Station, Pakitza, 11°56′S, 71°17′W); A. solimoes new species, (BRAZIL, Amazonas, Tefé (Ega), 3°22′S, 64°42′W); A. servatorum new species, (PERU, Loreto, 1...