A revision of Australian Thrasorinae (Hymenoptera: Figitidae) with a description of a new genus and six new species

Abstract  A new genus of Thrasorinae (Hymenoptera: Figitidae) is described from Australia, and includes specimens reared from an unidentified Ophelimus species (Eulophidae: Ophelimini) on Eucalyptus cinerea (Myrtaceae). Mikeius , new genus, includes six species: M .  berryi sp. n., M. gatesi sp. n., M. grandawi sp. n., M .  hartigi (Girault) n. comb., M. neumanni sp. n. and M. schauffi sp. n.; M. hartigi is designated as the type species of Mikeius . Thrasorus Weld is revised, and the description of T. schmidtae sp. n. is provided, as well as a redescription of T. pilosus Weld. All records to date indicate that species of Mikeius and Thrasorus are associated with hosts that induce galls on species of Acacia and Eucalyptus , although most of these host records await verification. A list of world species of Thrasorinae is provided.