Hedychrum viride Cresson, 1865:306, sex not indicated. 2 specimen, Colorado Territory, 1864 (leg. Mr. James Ridings); Kimsey, 2006Kimsey, L.S. 2006. California Cuckoo Wasps in the Family Chrysididae (Hymenoptera). University of California Press, Berkeley, Los Angeles, London. 1-311.:51, Lectotype ♀ (ANSP). - Norton, 1879Norton, E. 1879. On the Chrysides of North America. Transactions of the American Entomological Society 7:233-242. (distribution); Bohart & Kimsey, 1978Bohart, R.M. & L.S. Kimsey 1978. A revision of the New World species of Hedychridium (Hymenoptera, Chrysididae). Proceedings of the Biological Society of Washington 91 (3):590-635.:611 ( listed as synonym of Hedychridium fletcheri Bodenstein, 1951); 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 2. Apocrita (Aculeata). Smithsonian Institution Press, Washington D.C. 1199-2209.:1226 ( listed as synonym of Hedychridium fletcheri Bodenstein, 1951); Kimsey, 2006Kimsey, L.S. 2006. California Cuckoo Wasps in the Family Chrysididae (Hymenoptera). University of California Press, Berkeley, Los Angeles, London. 1-311.:51 ( listed as synonym of Hedychridium fletcheri Bodenstein, 1951). - As Holopyga viridis: - Dalla Torre, 1892Dalla Torre, C.G. 1892. Catalogus hymenopterorum hucusque descriptorum systematicus et synonymicus. Volumen VI: Chrysididae (Tubulifera). Breitkopf & Härtel, Leipzig. 1-118. (distribution).
Hedychridium fletcheri Bodenstein, 1951:720 Replacement name for Hedychrum viride Cresson, 1865 by Muesebeck et al., 1951Muesebeck, C.F.W., K.V. Krombein & H.K. Townes 1951. Hymenoptera of America north of Mexico - Synoptic catalog. U.S. Dept. Agr. Monog. 2:1-1420.:720 (preocc. by Guérin, 1842). - Krombein, 1958Krombein, K.V. 1958. Additions during 1956 and 1957 to the wasp fauna of Lost River State Park, West Virginia, with biological notes and descriptions of new species (Hymenoptera, Aculeata). Proceedings of the Entomological Society of Washington 60 (2):49-64. (distribution); Bohart & Kimsey, 1978Bohart, R.M. & L.S. Kimsey 1978. A revision of the New World species of Hedychridium (Hymenoptera, Chrysididae). Proceedings of the Biological Society of Washington 91 (3):590-635. (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 2. Apocrita (Aculeata). Smithsonian Institution Press, Washington D.C. 1199-2209. (distribution); Kimsey, 2006Kimsey, L.S. 2006. California Cuckoo Wasps in the Family Chrysididae (Hymenoptera). University of California Press, Berkeley, Los Angeles, London. 1-311. (distribution); Conrow et al., 2016Conrow, R.T., K.M. Zivicki & G.P. Setliff 2016. Cuckoo wasps of Pennsylvania (Hymenoptera: Chrysididae). Transactions of the American Entomological Society 142 (10):113-129. (distribution).