Phileremus illinoiensis Robertson, 1891:64, ♂♀. 3 ♀♀, 9 ♂♂, Carlinville, Ill., August 14th and 23d (leg. Robertson); Hurd & Linsley, 1972Hurd, P.D. Jr. & E.G. Linsley 1972. Parasitic bees of the genus Holcopasites Ashmead (Hymenoptera: Apoidea). Smithsonian Contributions to Zoology 114:1-41.:37, Type (National Museum of Natural History, Washington, D.C.); Hurd & Linsley, 1972Hurd, P.D. Jr. & E.G. Linsley 1972. Parasitic bees of the genus Holcopasites Ashmead (Hymenoptera: Apoidea). Smithsonian Contributions to Zoology 114:1-41.:34, Type (Illinois Natural History Survey, Urbana). - As Holcopasites illinoiensis: - Mitchell, 1962Mitchell, T.B. 1962. Bees of the Eastern United States. Volume II. Technical bulletin (North Carolina Agricultural Experiment Station) 152:1-557. (distribution); Owens et al., 2018Owens, B.E., L. Allain, E.C. van Gorder, J.L. Bossart & C.E. Carlton 2018. The bees (Hymenoptera: Apoidea) of Louisiana: An updated, annotated checklist. Proceedings of the Entomological Society of Washington 120 (2):272-307. (distribution). - As Holcopasites illinoiensis illinoiensis: - Hurd & Linsley, 1972Hurd, P.D. Jr. & E.G. Linsley 1972. Parasitic bees of the genus Holcopasites Ashmead (Hymenoptera: Apoidea). Smithsonian Contributions to Zoology 114:1-41. (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). - As Neopasites illinoiensis: - Linsley, 1943Linsley, E.G. 1943. A revision of the genus Neopasites (Hymenoptera: Nomadidae). Transactions of the American Entomological Society 69 (2 and 3):119-140. (distribution). - As Phileremus illinoiensis illinoiensis:
Holcopasites pratti Ashmead in Crawford, 1915:123 - Hurd & Linsley, 1972Hurd, P.D. Jr. & E.G. Linsley 1972. Parasitic bees of the genus Holcopasites Ashmead (Hymenoptera: Apoidea). Smithsonian Contributions to Zoology 114:1-41.:34 ( listed as synonym of Holcopasites illinoiensis illinoiensis (Robertson, 1891)); 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.:2086 ( listed as synonym of Holcopasites illinoiensis illinoiensis (Robertson, 1891)).
Neopasites punctulatus Linsley, 1943:135, ♂. Holotype ♂, Chevy Chase, District of Columbia, June 14, 1916 (Academy of Natural Sciences of Philadelphia, No. 5012, leg. W.D. Pierce); Hurd & Linsley, 1972Hurd, P.D. Jr. & E.G. Linsley 1972. Parasitic bees of the genus Holcopasites Ashmead (Hymenoptera: Apoidea). Smithsonian Contributions to Zoology 114:1-41.:34, Type (Academy of Natural Sciences, Philadelphia). Synonymized with Holcopasites illinoiensis (Robertson, 1891) by Mitchell, 1962Mitchell, T.B. 1962. Bees of the Eastern United States. Volume II. Technical bulletin (North Carolina Agricultural Experiment Station) 152:1-557.:483. - Hurd & Linsley, 1972Hurd, P.D. Jr. & E.G. Linsley 1972. Parasitic bees of the genus Holcopasites Ashmead (Hymenoptera: Apoidea). Smithsonian Contributions to Zoology 114:1-41.:34 ( listed as synonym of Holcopasites illinoiensis illinoiensis (Robertson, 1891)); 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.:2086 ( listed as synonym of Holcopasites illinoiensis illinoiensis (Robertson, 1891)).