Microdus discolor Cresson, 1873:52, ♂♀.Illinois; Muesebeck, 1927Muesebeck, C.F.W. 1927. A revision of the parasitic wasps of the subfamily Braconinae occuring in America north of Mexico. Proceedings of the United States National Museum 69 (art. 16):1-73.:68, Type (Philadelphia Academy of Science). - Dalla Torre, 1898Dalla Torre, C.G. 1898. Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus. - IV: Braconidae. Sumptibus Guilelmi Engelmann, VIII + 323. (distribution). - As Agathis discolor: - 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). - As Bassus discolor: - Muesebeck, 1927Muesebeck, C.F.W. 1927. A revision of the parasitic wasps of the subfamily Braconinae occuring in America north of Mexico. Proceedings of the United States National Museum 69 (art. 16):1-73. (distribution).
Bassus brittoni Viereck, 1917:227, Muesebeck, 1927Muesebeck, C.F.W. 1927. A revision of the parasitic wasps of the subfamily Braconinae occuring in America north of Mexico. Proceedings of the United States National Museum 69 (art. 16):1-73.:68, Type (agricultural experiment station at New Haven, Connecticut). - Muesebeck, 1927Muesebeck, C.F.W. 1927. A revision of the parasitic wasps of the subfamily Braconinae occuring in America north of Mexico. Proceedings of the United States National Museum 69 (art. 16):1-73.:68 ( listed as synonym of Bassus discolor (Cresson, 1873)); Sharkey, 2004Sharkey, M.J. 2004. Synopsis of the Agathidinae (Hymenoptera: Braconidae) of America north of Mexico. Proceedings of the Russian Entomological Society. St. Petersburg 75 (1):134-152.:147 ( listed as synonym of Bassus discolor (Cresson, 1873)).