Neomesostenus variegatus Szépligeti, 1916:302, ♀.Brasilien: Blumenau (Ungarische National-Museum); Santos & Aguiar, 2013Santos, B.F. & A.P. Aguiar 2013. Phylogeny and revision of Messatoporus Cushman (Hymenoptera, Ichneumonidae, Cryptinae), with descriptions of sixty five new species. Zootaxa 3634 (1):1-284.:201, Holotype ♀ (HMNH). - As Digonocryptus variegatus: - Aguiar & Santos, 2012Aguiar, A.P. & B.F. Santos 2012. Additions to the revision of Digonocryptus Viereck (Hymenoptera, Ichneumonidae, Cryptinae), with nine new taxa, new males, and distribution maps for all known species. Zootaxa 3282:1-41. (distribution); Santos & Hoppe, 2018Santos, B.F. & J.P.M. Hoppe 2018. Filling gaps in species distributions through the study of biological collections: 415 new distribution records for Neotropical Cryptinae (Hymenoptera, Ichneumonidae). Revista Brasileira de Entomologia 62 (4):288-291. (distribution); Pérez-Urbina et al., 2018Pérez-Urbina, B.A., J.M. Coronado-Blanco, E. Ruíz-Cancino, C.S. Venegas-Barrera, A. Correa-Sandoval & J.V. Horta-Vega 2018. Community structure of Ichneumonidae (Hymenoptera) in a mangrove area in the coastal zone of Tamaulipas, Mexico. Revista Mexicana de Biodiversidad 89:823-835. (distribution). - As Messatoporus variegatus: - Santos & Aguiar, 2013Santos, B.F. & A.P. Aguiar 2013. Phylogeny and revision of Messatoporus Cushman (Hymenoptera, Ichneumonidae, Cryptinae), with descriptions of sixty five new species. Zootaxa 3634 (1):1-284. (distribution).
Neomesostenus tricolor Szépligeti, 1916:301, ♂.Brasilien: Blumenau (Ungarische National-Museum); Santos & Aguiar, 2013Santos, B.F. & A.P. Aguiar 2013. Phylogeny and revision of Messatoporus Cushman (Hymenoptera, Ichneumonidae, Cryptinae), with descriptions of sixty five new species. Zootaxa 3634 (1):1-284.:201, Holotype ♂ (HMNH). Synonymized with Messatoporus variegatus (Szépligeti, 1916) by Santos & Aguiar, 2013Santos, B.F. & A.P. Aguiar 2013. Phylogeny and revision of Messatoporus Cushman (Hymenoptera, Ichneumonidae, Cryptinae), with descriptions of sixty five new species. Zootaxa 3634 (1):1-284.:201.