Pompilinus rectangularis Dreisbach, 1949:18, ♂. Holotype ♂, Falls Church, Virginia, VII-11, N. Banks (MCZ); Paratype ♂, Washtenaw Co., Michigan, VII-22-27, N. K. Bigelow (MZ); Paratype ♂, Washington, D. C, VII-8-47, David Shappirio (DS); Paratype ♂, Patuxent Refuge, Bowie, Maryland, VI-3-45, R. T. Mitchell (PR); Paratype ♂, Falls Church, Virginia, VIII-22, N. Banks (MCZ); Paratype ♂, Franklin Co., Ohio, VII-11-42, VI-3-42 (OSU); Paratype ♂, Atchison Co., Kansas, VII-29-24, E. P. Breakeley (Kann.); Paratype ♂, Holden, Massachusetts, VIII-8-05, J. C. Bridwell (USNM); Paratype ♂, Carlinville, Illinois, (5), 1895, Robertson (INHS); Paratype ♂, Hecton Mills, Pennsylvania, V-31-09, W. S. Fisher (USNM); Paratypes 42 ♂♂ (RRD); Evans, 1950Evans, H.E. 1950. A taxonomic study of the Nearctic spider wasps belonging to the tribe Pompilini (Hymenoptera: Pompilidae). Part 2. Genus Anoplius Dufour. Transactions of the American Entomological Society 76:207-361.:309, Type ♂ (M.C.Z.). - Dreisbach, 1949Dreisbach, R.R. 1949. Psammocharini (Hymenoptera) of the north america and the antilles: key to genera; new species and key to males of Pompilinus. Entomologica Americana (n. s.) 29 (1-2):1-58.:33 (key male); Junco y Reyes, 1959Junco y Reyes, J.J. 1959. Himenópteros de Espana. Fam. Pompilidae (=Psammocharidae) Gen. Anopilus Duf. EOS Revista Española de Entomologia 35:41-95.:53 (listed). - As Anoplius rectangularis rectangularis: - Evans, 1950Evans, H.E. 1950. A taxonomic study of the Nearctic spider wasps belonging to the tribe Pompilini (Hymenoptera: Pompilidae). Part 2. Genus Anoplius Dufour. Transactions of the American Entomological Society 76:207-361. (distribution), 309 (comb. nov.), 310 (biology); 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); Evans, 1997Evans, H.E. 1997. Spider wasps of Colorado (Hymenoptera, Pompilidae): An annotated checklist. The Great Basin Naturalist 57 (3):189-197. (distribution).