Two new species of Ophrynopus Konow, 1897 (Hymenoptera: Orussidae), with a new definition of the genus

Two species of Orussidae are described: Ophrynopus rufocephalus new species and Ophrynopus savinai new species. The new taxa are analyzed with an existing data set for the Orussidae of the world. The results of the analyses indicate that the generic classification within the ophrynopine clade needs to be adjusted. Argentophrynopus Vilhelmsen & D.R. Smith, 2002 new synonym and Ophrella Middlekauff, 1985 new synonym are treated as junior synonyms of Ophrynopus Konow, 1897. This results in the following additional taxonomic changes: Ophrynopus amazonicus (Westwood, 1874) combination reestablished, Ophrynopus eldorado (Vilhelmsen, 2013) new combination, Ophrynopus enigmus (Vilhelmsen & D.R. Smith, 2002) new combination, Ophrynopus gauldi (Vilhelmsen & D.R. Smith, 2002) new combination, Ophrynopus seagi (Vilhelmsen, 2016) new combination. Furthermore, Ophrynopus andrei Konow, 1897 new synonym is regarded as a junior synonym of Ophrynopus fulvostigma (Westwood, 1874). A revised key to Ophrynopus spp. is presented.