Otlophorus innumerabilis feria Davis, 1897:276, ♂♀. 2 ♀♀, 3 ♂♂, New Hampshire, New York and Michigan (Coll. Am. E. S., Davis and Mich. Ag. Coll.). - Davis, 1897Davis, G.C. 1897. A review of the Ichneumonid subfamily Tryphoninae. Transactions of the American Entomological Society 24 (3/4):193-348. (distribution). - As Monoblastus feria feria: - 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).
Epachtes basilicus Davis, 1897:283, ♂♀. Types (Coll. Am. Ent. Soc. and Davis). - Davis, 1897Davis, G.C. 1897. A review of the Ichneumonid subfamily Tryphoninae. Transactions of the American Entomological Society 24 (3/4):193-348. (distribution). - As Epachthes basilicus: - Dalla Torre, 1901-1902Dalla Torre, C.G. 1901-1902. Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus. — Volumen III: Trigonalidae, Megalyridae, Stephanidae, Ichneumonidae, Agriotypidae, Evaniidae, Pelecinidae. Pars II. Breitkopf & Härtel, Leipzig. VIII + 1141. (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.:373 ( listed as synonym of Monoblastus feria feria (Davis, 1897)). - As Epachthes basilicus: - Dalla Torre, 1901-1902Dalla Torre, C.G. 1901-1902. Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus. — Volumen III: Trigonalidae, Megalyridae, Stephanidae, Ichneumonidae, Agriotypidae, Evaniidae, Pelecinidae. Pars II. Breitkopf & Härtel, Leipzig. VIII + 1141. (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.:373 ( listed as synonym of Monoblastus feria feria (Davis, 1897)).