Lytopylus azygos Viereck, 1905:267, ♀. Holotype ♀, Morton county, Kansas, 3200 feet, June, 1902 (University of Kansas, leg. F. H. Snow); 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.:37, Holotype (University of Kansas). - As Agathis azygos: - 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 azygos:
Microdus agathoides Viereck, 1905:277, 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.:37, Holotype (University of Kansas). - 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.:37 ( listed as synonym of Bassus azygos (Viereck, 1905)); 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.:146 ( listed as synonym of Bassus azygos (Viereck, 1905)).