Mutilla castanea Cresson, 1865:388, ♂. Holotype ♂, Cape St. Lucas, Lower California (Ent. Soc. Philad., leg. H. Ulke); Bradley, 1917Bradley, J.C. 1917. Contributions toward a monograph of the Mutillidae and their allies of America North of Mexico. Transactions of the American Entomological Society 43:247-290.:276, Type (American Entomological Society, No. 1894); Kimsey & Wasbauer, 2006Kimsey, L.S. & Wasbauer M.S. 2006. Phylogeny and checklist of the nocturnal Tiphiids of the Western Hemisphere (Hymenoptera: Tiphiidae: Brachycistidinae). Journal of Hymenoptera Research 15 (1):9-25.:22, Holotype ♂ (ANSP); Kimsey & Wasbauer, 2013Kimsey, L.S. & M.S. Wasbauer 2013. Revision of the brachycistidine genus Colocistis Krombein, 1942 (Hymenoptera, Tiphiidae). Journal of Hymenoptera Research 33:1-24.:7, Holotype ♂ (ANSP). - Dalla Torre, 1897Dalla Torre, C.G. 1897. Catalogus hymenopterorum hucusque descriptorum systematicus et synonymicus. Volumen VIII: Fossores (Sphegidae). Breitkopf & Härtel, Leipzig. 1-749. (distribution). - As Agama castanea: - Blake, 1879Blake, C.A. 1879. Catalogue of the Mutillidae of North America, with descriptions of new species. Transactions of the American Entomological Society 7:243-254. (distribution). - As Brachycistis castanea: - Bradley, 1917Bradley, J.C. 1917. Contributions toward a monograph of the Mutillidae and their allies of America North of Mexico. Transactions of the American Entomological Society 43:247-290. (distribution); Malloch, 1926Malloch, J.R. 1926. Systematic notes on and descriptions of North American wasps of the subfamily Brachycistidinae. Proceedings of the United States National Museum 68:1-28. (distribution). - As Brachycistis castaneus: - Cockerell, 1898Cockerell, T.D.A. 1898. Contributions to the entomology of New Mexico. Proc. Davenport Acad. nat. Sci. 7:139-148. (distribution); Fox, 1899Fox, W.J. 1899. The North American Mutillidae. Transactions of the American Entomological Society 25:219-300. (distribution); Melander, 1903Melander, A.L. 1903. Notes on North American Mutillidae, with descriptions of new species. Transactions of the American Entomological Society 29 (4):291-330. (distribution). - As Calocistis catanea: - Ruíz-Cancino & Coronado-Blanco, 2002Ruíz-Cancino, E. & J.M. Coronado-Blanco 2002. Artrópodos terrestres de los estados de Tamaulipas y Nuevo León, México. Serie Publicaciones Cientificas No. 4:1-376. (distribution). - As Colocistis castanea: - Wasbauer, 1973Wasbauer, M.S. 1973. The male brachycistidine wasps of the Nevada Test Site (Hymenoptera: Tiphiidae). Great Basin Naturalist 33 (2):109-112. (distribution); Krombein et al., 1979Krombein, K.V., P.D. Hurd, D.R. Smith & B.D. Burks 1979. Catalog of Hymenoptera in America North of Mexico. Volume 2. Apocrita (Aculeata). Smithsonian Institution Press, Washington D.C. 1199-2209. (distribution); Kimsey & Wasbauer, 2013Kimsey, L.S. & M.S. Wasbauer 2013. Revision of the brachycistidine genus Colocistis Krombein, 1942 (Hymenoptera, Tiphiidae). Journal of Hymenoptera Research 33:1-24. (distribution). - As Photopsis castanea: - Blake, 1886Blake, C. 1886. Monograph of the Mutillidae of North America. Transactions of the American Entomological Society 13:179-286. (distribution); Fox, 1893Fox, W.J. 1893. Report on some mexican Hymenoptera, principally from lower California. Proceedings of the California Academy of Sciences ser.2 (4):1-25.:8 (comb. nov.). - As Photopsis castaneus: - Fox, 1893Fox, W.J. 1893. Report on some mexican Hymenoptera, principally from lower California. Proceedings of the California Academy of Sciences ser.2 (4):1-25. (distribution).
Brachycistis stygia Bradley, 1917:276, ♂. Holotype ♂, Nogales, Arizona, June 12, 1903 (Cornell University, No. 124.1, leg. E.J. Oslar); Kimsey & Wasbauer, 2006Kimsey, L.S. & Wasbauer M.S. 2006. Phylogeny and checklist of the nocturnal Tiphiids of the Western Hemisphere (Hymenoptera: Tiphiidae: Brachycistidinae). Journal of Hymenoptera Research 15 (1):9-25.:22, Holotype ♂ (CU); Kimsey & Wasbauer, 2013Kimsey, L.S. & M.S. Wasbauer 2013. Revision of the brachycistidine genus Colocistis Krombein, 1942 (Hymenoptera, Tiphiidae). Journal of Hymenoptera Research 33:1-24.:7, Holotype ♂ (CUIC). Synonymized with Colocistis castanea (Cresson, 1865) by Kimsey & Wasbauer, 2013Kimsey, L.S. & M.S. Wasbauer 2013. Revision of the brachycistidine genus Colocistis Krombein, 1942 (Hymenoptera, Tiphiidae). Journal of Hymenoptera Research 33:1-24.:7. - Malloch, 1926Malloch, J.R. 1926. Systematic notes on and descriptions of North American wasps of the subfamily Brachycistidinae. Proceedings of the United States National Museum 68:1-28. (distribution).