Hadronotus myrmecophilus Ashmead, 1893:230 (key), 232, ♂. Holotype ♂, Arlington, Va. (Coll. Ashmead); Masner & Muesebeck, 1968Masner, L. & C.F.W. Muesebeck 1968. The Types of Proctotrupoidea (Hymenoptera) in the United States National Museum. 270:1-143.:36, Holotype ♂ (USNM, no. 21925). - Dalla Torre, 1898Dalla Torre, C.G. 1898. Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus, V. Chalcididae et Proctotrupidae. Sumptibus Guilelmi Engelmann, VII + 598. (distribution). - As Gryon myrmecophilum: - Lourdes Ramírez-Ahuja et al., 2019Lourdes Ramírez-Ahuja, M. de, J.I. López-Arroy, I.P. Rodríguez-Sánchez & A. González-Hernández 2019. Hymenoptera parasitoids associated with stink bugs in Mexico. Southwestern Entomoloigst 44 (1):35-39. (distribution); Felipe-Victoriano et al., 2019Felipe-Victoriano, M., E.J. Talamas & S.R. Sánchez-Peña 2019. Scelionidae (Hymenoptera) parasitizing eggs of Bagrada hilaris (Hemiptera, Pentatomidae) in Mexico. Journal of Hymenoptera Research 73:143-152. (distribution). - As Gryon myrmecophilus: - 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).