Megischus erythrocephalus Cameron, 1887:421, ♀. ♀, Panama, Bugaba 800 to 1500 feet (leg. Champion). - Cameron, 1883-1888Cameron, P. 1883-1888. Biologia Centrali-Americana - Insecta. Hymenoptera. (Families Tenthredinidae-Chrysididae). Taylor and Francis, Red Lion Court, Fleet Street. 487 pp., 20 pl.:421 (listed). - As Aguiarina erythrocephalus: - Ramos & Arias, 2018Ramos, Y.J.A. & D.Q. Arias 2018. Aulacidae, Gasteruptiidae y Stephanidae (Insecta, Hymenoptera) de Panamá. Tecnociencia 20 (1):27-34. (distribution); Añino & Quintero, 2018Añino Ramos, Y.J. & D. Quintero Arias 2018. Aulacidae, Gasteruptiidae y Stephanidae (Insecta: Hymenoptera) de Panamá. Tecnociencia 20 (1):27-34. (distribution); Añino Ramos, 2018Añino Ramos, Y.J. 2018. . Dissertation , , 1-48. (distribution). - As Hemistephanus erythrocephalus: - Aguiar, 2004Aguiar, A.P. 2004. Additions to the revision of the genus Hemistephanus Enderlein (Hymenoptera: Stephanidae), with inclusdion of four taxa and description of two new species. Papéis Avulsos de Zoologia 44 (2):13-43. (distribution). - As Stephanus erythrocephalus: - 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).