Brachycistis æqualis Fox, 1899:284, ♂. 4 ♂♂, Colorado; Nevada; Arizona; Kimsey & Wasbauer, 2015Kimsey, L.S. & M.S. Wasbauer 2015. Revision of the odd brachycistidine genus Acanthetropis Wasbauer, 1958 (Hymenoptera, Tiphiidae, Brachycistidinae). Journal of Hymenoptera Research 44:19-30.:23, Syntype ♂♂ (ANSP). - Fox, 1899Fox, W.J. 1899. The North American Mutillidae. Transactions of the American Entomological Society 25:219-300. (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 Acanthetropis aequalis: - Kimsey & Wasbauer, 2015Kimsey, L.S. & M.S. Wasbauer 2015. Revision of the odd brachycistidine genus Acanthetropis Wasbauer, 1958 (Hymenoptera, Tiphiidae, Brachycistidinae). Journal of Hymenoptera Research 44:19-30. (distribution).
Brachycistis normalis Malloch, 1926:8, ♂. Holotype ♂, Cedar Pass, S. Dak. (U.S.N.M., No. 27909, leg. W.H. Over); Kimsey & Wasbauer, 2015Kimsey, L.S. & M.S. Wasbauer 2015. Revision of the odd brachycistidine genus Acanthetropis Wasbauer, 1958 (Hymenoptera, Tiphiidae, Brachycistidinae). Journal of Hymenoptera Research 44:19-30.:23, Holotype ♂ (USNM). Synonymized with Acanthetropis aequalis (Fox, 1899) by Kimsey & Wasbauer, 2015Kimsey, L.S. & M.S. Wasbauer 2015. Revision of the odd brachycistidine genus Acanthetropis Wasbauer, 1958 (Hymenoptera, Tiphiidae, Brachycistidinae). Journal of Hymenoptera Research 44:19-30.:22. - 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).