Polysphincta nigriceps Walsh, 1873:144, ♂♀. 1 ♂, 1 ♀; Townes & Townes, 1960Townes, H.K. & M. Townes 1960. Ichneumon-flies of America North of Mexico: 2. Subfamilies Ephialtinae, Xoridinae, Acaenitinae. Bulletin of the United States National Museum 216 (2):1-676.:273, Types ♂, ♀, destroyed in Chicago fire of 1871. - Dalla Torre, 1901-1902Dalla Torre, C.G. 1901-1902. Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus. — Volumen III: Trigonalidae, Megalyridae, Stephanidae, Ichneumonidae, Agriotypidae, Evaniidae, Pelecinidae. Pars II. Breitkopf & Härtel, Leipzig. VIII + 1141. (distribution). - As Flacopimpla nigriceps: - Gauld & Dubois, 2006Gauld, I.D. & J. Dubois 2006. Phylogeny of the Polysphincta group of genera (Hymenoptera: Ichneumonidae; Pimplinae): a taxonomic revision of spider ectoparasitoids. Systematic Entomology 31:529-564.:550 (comb. nov.); Khalaim & Ruíz-Cancino, 2011Khalaim, A.I. & E. Ruíz-Cancino 2011. North and Central American species of the genus Flacopimpla Gauld (Hymenoptera: Ichneumonidae: Pimplinae), with description of a new species from Mexico. Proceedings of the Zoological Institute RAS 315 (1):70-74. (distribution); Khalaim et al., 2024Khalaim, A.I., E. Ruíz-Cancino & J.M. Coronado-Blanco 2024. Darwin wasps of the subfamily Pimplinae (Hymenoptera: Ichneumonidae) of Mexico: Polysphincta genus-group. Zootaxa 5458 (2):151-196. (distribution). - As Zatypota nigriceps: - Townes & Townes, 1960Townes, H.K. & M. Townes 1960. Ichneumon-flies of America North of Mexico: 2. Subfamilies Ephialtinae, Xoridinae, Acaenitinae. Bulletin of the United States National Museum 216 (2):1-676. (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 1. Symphyta and Apocrita (Parasitica). Smithsonian Institution Press, Washington D.C. 1-1198. (distribution).
Polysphincta nigrita Walsh, 1873:144, ♂. Holotype ♂; Townes & Townes, 1960Townes, H.K. & M. Townes 1960. Ichneumon-flies of America North of Mexico: 2. Subfamilies Ephialtinae, Xoridinae, Acaenitinae. Bulletin of the United States National Museum 216 (2):1-676.:273, Type ♂, destroyed in Chicago fire of 1871. - Dalla Torre, 1901-1902Dalla Torre, C.G. 1901-1902. Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus. — Volumen III: Trigonalidae, Megalyridae, Stephanidae, Ichneumonidae, Agriotypidae, Evaniidae, Pelecinidae. Pars II. Breitkopf & Härtel, Leipzig. VIII + 1141. (distribution); Townes & Townes, 1960Townes, H.K. & M. Townes 1960. Ichneumon-flies of America North of Mexico: 2. Subfamilies Ephialtinae, Xoridinae, Acaenitinae. Bulletin of the United States National Museum 216 (2):1-676.:273 ( listed as synonym of Zatypota nigriceps (Walsh, 1873)); 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 1. Symphyta and Apocrita (Parasitica). Smithsonian Institution Press, Washington D.C. 1-1198.:338 ( listed as synonym of Zatypota nigriceps (Walsh, 1873)); Khalaim et al., 2024Khalaim, A.I., E. Ruíz-Cancino & J.M. Coronado-Blanco 2024. Darwin wasps of the subfamily Pimplinae (Hymenoptera: Ichneumonidae) of Mexico: Polysphincta genus-group. Zootaxa 5458 (2):151-196.:168 ( listed as synonym of Flacopimpla nigriceps (Walsh, 1873)).
Clistopyga nigrocephala Davis, 1897:369, ♂. Holotype ♂, Algonquin, Ill. (leg. Dr. Nason); Cushman, 1920Cushman, R.A. 1920. The North American Ichneumon-flies of the tribes Lycorini, Polyphinctini, and Theroniini. Proceedings of the United States National Museum 58 (2326):7-48, 1 pl.:32, Type (Acad. Nat. Sci. Phila.); Townes & Townes, 1960Townes, H.K. & M. Townes 1960. Ichneumon-flies of America North of Mexico: 2. Subfamilies Ephialtinae, Xoridinae, Acaenitinae. Bulletin of the United States National Museum 216 (2):1-676.:273, Type ♂ (Philadelphia). - Dalla Torre, 1901-1902Dalla Torre, C.G. 1901-1902. Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus. — Volumen III: Trigonalidae, Megalyridae, Stephanidae, Ichneumonidae, Agriotypidae, Evaniidae, Pelecinidae. Pars II. Breitkopf & Härtel, Leipzig. VIII + 1141. (distribution); Townes & Townes, 1960Townes, H.K. & M. Townes 1960. Ichneumon-flies of America North of Mexico: 2. Subfamilies Ephialtinae, Xoridinae, Acaenitinae. Bulletin of the United States National Museum 216 (2):1-676.:273 ( listed as synonym of Zatypota nigriceps (Walsh, 1873)); 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 1. Symphyta and Apocrita (Parasitica). Smithsonian Institution Press, Washington D.C. 1-1198.:338 ( listed as synonym of Zatypota nigriceps (Walsh, 1873)); Khalaim et al., 2024Khalaim, A.I., E. Ruíz-Cancino & J.M. Coronado-Blanco 2024. Darwin wasps of the subfamily Pimplinae (Hymenoptera: Ichneumonidae) of Mexico: Polysphincta genus-group. Zootaxa 5458 (2):151-196.:168 ( listed as synonym of Flacopimpla nigriceps (Walsh, 1873)). - As Polysphincta nigrocephala: - Cushman, 1920Cushman, R.A. 1920. The North American Ichneumon-flies of the tribes Lycorini, Polyphinctini, and Theroniini. Proceedings of the United States National Museum 58 (2326):7-48, 1 pl. (distribution).
Polysphincta braucheri Cushman, 1920:33, ♂♀. Type (U.S.N.M., No. 19173); Townes & Townes, 1960Townes, H.K. & M. Townes 1960. Ichneumon-flies of America North of Mexico: 2. Subfamilies Ephialtinae, Xoridinae, Acaenitinae. Bulletin of the United States National Museum 216 (2):1-676.:273, Type ♀ (Washington). - Cushman, 1920Cushman, R.A. 1920. The North American Ichneumon-flies of the tribes Lycorini, Polyphinctini, and Theroniini. Proceedings of the United States National Museum 58 (2326):7-48, 1 pl. (distribution); Townes & Townes, 1960Townes, H.K. & M. Townes 1960. Ichneumon-flies of America North of Mexico: 2. Subfamilies Ephialtinae, Xoridinae, Acaenitinae. Bulletin of the United States National Museum 216 (2):1-676.:273 ( listed as synonym of Zatypota nigriceps (Walsh, 1873)); 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 1. Symphyta and Apocrita (Parasitica). Smithsonian Institution Press, Washington D.C. 1-1198.:338 ( listed as synonym of Zatypota nigriceps (Walsh, 1873)); Khalaim et al., 2024Khalaim, A.I., E. Ruíz-Cancino & J.M. Coronado-Blanco 2024. Darwin wasps of the subfamily Pimplinae (Hymenoptera: Ichneumonidae) of Mexico: Polysphincta genus-group. Zootaxa 5458 (2):151-196.:168 ( listed as synonym of Flacopimpla nigriceps (Walsh, 1873)).
Polysphincta californiensis Cushman, 1920:34, ♀. Holotype ♀, Santa Cruz Mountains, California (U.S.N.M., No. 19174); Townes & Townes, 1960Townes, H.K. & M. Townes 1960. Ichneumon-flies of America North of Mexico: 2. Subfamilies Ephialtinae, Xoridinae, Acaenitinae. Bulletin of the United States National Museum 216 (2):1-676.:273, Type ♀ (Washington). - Townes & Townes, 1960Townes, H.K. & M. Townes 1960. Ichneumon-flies of America North of Mexico: 2. Subfamilies Ephialtinae, Xoridinae, Acaenitinae. Bulletin of the United States National Museum 216 (2):1-676.:273 ( listed as synonym of Zatypota nigriceps (Walsh, 1873)); 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 1. Symphyta and Apocrita (Parasitica). Smithsonian Institution Press, Washington D.C. 1-1198.:338 ( listed as synonym of Zatypota nigriceps (Walsh, 1873)); Khalaim et al., 2024Khalaim, A.I., E. Ruíz-Cancino & J.M. Coronado-Blanco 2024. Darwin wasps of the subfamily Pimplinae (Hymenoptera: Ichneumonidae) of Mexico: Polysphincta genus-group. Zootaxa 5458 (2):151-196.:168 ( listed as synonym of Flacopimpla nigriceps (Walsh, 1873)).
Polysphincta crosbyi Cushman, 1920:35, ♂♀. Holotype, Oswego, New York, July 1, 1897 (U.S.N.M., No. 19175); Townes & Townes, 1960Townes, H.K. & M. Townes 1960. Ichneumon-flies of America North of Mexico: 2. Subfamilies Ephialtinae, Xoridinae, Acaenitinae. Bulletin of the United States National Museum 216 (2):1-676.:273, Type ♀ (Washington). - Townes & Townes, 1960Townes, H.K. & M. Townes 1960. Ichneumon-flies of America North of Mexico: 2. Subfamilies Ephialtinae, Xoridinae, Acaenitinae. Bulletin of the United States National Museum 216 (2):1-676.:273 ( listed as synonym of Zatypota nigriceps (Walsh, 1873)); 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 1. Symphyta and Apocrita (Parasitica). Smithsonian Institution Press, Washington D.C. 1-1198.:338 ( listed as synonym of Zatypota nigriceps (Walsh, 1873)); Khalaim et al., 2024Khalaim, A.I., E. Ruíz-Cancino & J.M. Coronado-Blanco 2024. Darwin wasps of the subfamily Pimplinae (Hymenoptera: Ichneumonidae) of Mexico: Polysphincta genus-group. Zootaxa 5458 (2):151-196.:168 ( listed as synonym of Flacopimpla nigriceps (Walsh, 1873)).