Ancistromma chilopsidis Cockerell, 1897:137 - As Larropsis chilopsidis: - 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); Amarante, 2002Amarante, S.T.P. 2002. A synonymic catalog of the neotropical Crabronidae and Sphecidae (Hymenoptera: Apoidea). Arquivos de Zoologia (São Paulo) 37:1-139. (distribution).
Ancistromma zerbeii Viereck, 1906:208, ♀. Holotype ♀, Clark Co., Kansas, 1962 ft., June (University of Kansas, leg. F.H. Snow). - 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.:1620 ( listed as synonym of Larropsis chilopsidis (Cockerell, 1897)). - As Ancistroma zerbeii: - Amarante, 2002Amarante, S.T.P. 2002. A synonymic catalog of the neotropical Crabronidae and Sphecidae (Hymenoptera: Apoidea). Arquivos de Zoologia (São Paulo) 37:1-139.:39 ( listed as synonym of Larropsis chilopsidis (Cockerell, 1897)). - As Ancistroma zerbeii: - Amarante, 2002Amarante, S.T.P. 2002. A synonymic catalog of the neotropical Crabronidae and Sphecidae (Hymenoptera: Apoidea). Arquivos de Zoologia (São Paulo) 37:1-139.:39 ( listed as synonym of Larropsis chilopsidis (Cockerell, 1897)).
Ancistromma tachysphecoides Viereck, 1906:209, ♂. Holotype ♂, Clark Co., Kansas, 1962 ft., May (University of Kansas, leg. F.H. Snow). - 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.:1620 ( listed as synonym of Larropsis chilopsidis (Cockerell, 1897)). - As Ancistroma tachysphecoides: - Amarante, 2002Amarante, S.T.P. 2002. A synonymic catalog of the neotropical Crabronidae and Sphecidae (Hymenoptera: Apoidea). Arquivos de Zoologia (São Paulo) 37:1-139.:39 ( listed as synonym of Larropsis chilopsidis (Cockerell, 1897)). - As Ancistroma tachysphecoides: - Amarante, 2002Amarante, S.T.P. 2002. A synonymic catalog of the neotropical Crabronidae and Sphecidae (Hymenoptera: Apoidea). Arquivos de Zoologia (São Paulo) 37:1-139.:39 ( listed as synonym of Larropsis chilopsidis (Cockerell, 1897)).