Trachypachus holmbergi, Holmberg’s temporal false ground beetle, is a species of beetle in the family Trachypachidae. This species is found in the United States and Canada,Catalogue of Life: Trachypachus inermis where it is found from lowlands to mountains.
Adults may be found among dead leaves, often on open or slightly shaded ground with sparse vegetation.A Treatise on the Western Hemisphere Caraboidea (Coleoptera)
References
George E. Ball, "Trachypachidae", in Ross H. Arnett, Jr. and Michael C. Thomas, American Beetles (CRC Press, 2001), vol. 1