Spathius trifasciatus Riley, 1873:106, Kula & Marsh, 2011Kula, R.R. & P.M. Marsh 2011. Doryctinae (Hymenoptera: Braconidae) of Konza Prairie excluding species of Heterospilus Haliday. Proceedings of the Entomological Society of Washington 113 (4):451-491.:486, ANSP, Syntype xf lost (Syntype xm). - Dalla Torre, 1898Dalla Torre, C.G. 1898. Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus. - IV: Braconidae. Sumptibus Guilelmi Engelmann, VIII + 323. (distribution); 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); Kula & Marsh, 2011Kula, R.R. & P.M. Marsh 2011. Doryctinae (Hymenoptera: Braconidae) of Konza Prairie excluding species of Heterospilus Haliday. Proceedings of the Entomological Society of Washington 113 (4):451-491. (distribution).
Spathius unifasciatus Ashmead, 1893:72, Kula & Marsh, 2011Kula, R.R. & P.M. Marsh 2011. Doryctinae (Hymenoptera: Braconidae) of Konza Prairie excluding species of Heterospilus Haliday. Proceedings of the Entomological Society of Washington 113 (4):451-491.:486, USNM, examined. - Dalla Torre, 1898Dalla Torre, C.G. 1898. Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus. - IV: Braconidae. Sumptibus Guilelmi Engelmann, VIII + 323. (distribution); 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.:159 ( listed as synonym of Spathius trifasciatus Riley, 1873); Kula & Marsh, 2011Kula, R.R. & P.M. Marsh 2011. Doryctinae (Hymenoptera: Braconidae) of Konza Prairie excluding species of Heterospilus Haliday. Proceedings of the Entomological Society of Washington 113 (4):451-491.:486 ( listed as synonym of Spathius trifasciatus Riley, 1873).