Stigmus neotropicus Kohl, 1890:64, Finnamore, 2002Finnamore, A.T. 2002. Revision of the world genera of tribe Stigmini (Hymenoptera: Apoidea:Crabronidae: Pemphredoninae), Part 2. Species of Incastigmus Finnamore. Journal of Hymenoptera Research 11 (1):12-71.:48, Holotype ♂, examined (NHMW). - Dalla Torre, 1897Dalla Torre, C.G. 1897. Catalogus hymenopterorum hucusque descriptorum systematicus et synonymicus. Volumen VIII: Fossores (Sphegidae). Breitkopf & Härtel, Leipzig. 1-749. (distribution); Schulz, 1906Schulz, W.A. 1906. Spolia Hymenopterologica. Junfermannsche Buchhandlung, Paderborn. 355 pp. (distribution). - As Incastigmus neotropicus: - 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); Finnamore, 2002Finnamore, A.T. 2002. Revision of the world genera of tribe Stigmini (Hymenoptera: Apoidea:Crabronidae: Pemphredoninae), Part 2. Species of Incastigmus Finnamore. Journal of Hymenoptera Research 11 (1):12-71. (distribution), 48 (comb. nov.); Starr & Hook, 2003Starr, C.K. & Hook, A.W. 2003. The aculeate Hymenoptera of Trinidad, West Indies. Occasional Papers o the Department of Life Sciences, University of the West Indies 12:1-31. (distribution); Rasmussen & Asenjo, 2009Rasmussen, C. & A. Asenjo 2009. A checklist to the wasps of Peru (Hymenoptera, Aculeata). ZooKeys 15:1-78. (distribution); Silvestre et al., 2014Silvestre, R., M.F. Demétrio, B.M. Trad, F. Varussa & O. Lima 2014. Diversity and distribution of Hymenoptera Aculeata in Midwestern Brazilian dry forests. In: Greer, F.E. (Ed.). Dry Forests. 29-80. (distribution); Hook et al., 2014Hook, A.W., J.L. Neff, M.S. Engel & H. Court 2014. The Apoidea (Hymenoptera) Fauna of Little Tobago Island, West Indies. Journal of the Kansas Entomological Society 87 (2):242-244. (distribution).