Diadegma dispar is a wasp first described by Johann Friedrich Gmelin in 1790.Gmelin, J.F. (1790) Caroli a Linne Systema Naturae (Ed. XIII). Tom I., G.E. Beer. Lipsiae. 2225-3020. (Ichneumon: 2674-2722).Taxapad Ichneumonoidea. Yu D.S.K., 2009-05-04

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