Plesia marginata Say, 1823:75, sex not indicated. Kimsey, 2009Kimsey, L.S. 2009. Taxonomic purgatory: Sorting out the wasp genus Myzinum Latreille in North America (Hymenoptera, Tiphiidae, Myzininae). Zootaxa 2224:30-50.:43, Holotype ♀, destroyed. - 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.:1266 ( listed as synonym of Myzinum ephippium laterale Cresson, 1865).
Myzine frontalis Cresson, 1875:711, ♀. Holotype ♀, New Mexico (leg. Dr. H.C. Yarrow); Kimsey, 2009Kimsey, L.S. 2009. Taxonomic purgatory: Sorting out the wasp genus Myzinum Latreille in North America (Hymenoptera, Tiphiidae, Myzininae). Zootaxa 2224:30-50.:43, Holotype ♀ (Philadelphia). - Dalla Torre, 1897Dalla Torre, C.G. 1897. Catalogus hymenopterorum hucusque descriptorum systematicus et synonymicus. Volumen VIII: Fossores (Sphegidae). Breitkopf & Härtel, Leipzig. 1-749. (distribution); Cockerell, 1898Cockerell, T.D.A. 1898. Contributions to the entomology of New Mexico. Proc. Davenport Acad. nat. Sci. 7:139-148. (distribution). - As Myzinum frontale: - 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); Boni-Bartalucci, 2004Boni-Bartalucci, M. 2004. Tribe-groups of the Myzininae with special regard to the palaearctic taxa of the tribe Meriini (Hymenoptera, Tiphiidae). Linzer Biologische Beitrage 36 (2):1205-1308. (distribution). - As Myzinum frontalis: - Kimsey, 2009Kimsey, L.S. 2009. Taxonomic purgatory: Sorting out the wasp genus Myzinum Latreille in North America (Hymenoptera, Tiphiidae, Myzininae). Zootaxa 2224:30-50. (distribution).