Diadegma brevivalve, also known as Diadegma valachicum, is a wasp first described by Thomson in 1887. No subspecies are listed.Constantineanu, M.I. (1936) Contributions a la faune ichneumonologique de la Roumanie. Subfamilia Ophioninae Cresson (suite)., Annales Scientifiques de l'Universite de Jassy. 22:177-193.Dyntaxa Diadegma brevivalveThomson, C.G. (1887) XXXV. Forsok till uppstallning och beskrifning af aterna inom slagtet Campoplex (Grav.)., Opuscula Entomologica. Lund. XI:1043-1182.Taxapad Ichneumonoidea. Yu D.S.K., 2009-05-04
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