Diadegma meliloti is a wasp first described by Horstmann in 1973.Horstmann, K. (1973) Nachtrag zur Revision der europaischen Diadegma-Arten (Hymenoptera: Ichneumonidae)., Beitrage zur Entomologie. 23:131-150. It is a member of the genus Diadegma and family Ichneumonidae.Taxapad Ichneumonoidea. Yu D.S.K., 2009-05-04 No subspecies are listed.

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