A cladistic analysis of known species of both Hemiptarsenus Westwood and Sympiesis Förster (Hymenoptera: Eulophidae) in Hungary was carried out based on 176 morphological characters from adults. Three most-parsimonious trees (MPTs) were produced, strictly consensused, and rerooted. Monophyly of Sympiesis was supported by all 3 MPTs. A review of the genera Hemiptarsenus Westwood and Sympiesis Förster was made based on the results of the cladistic analysis. Sympiesis petiolata was transferred into Hemiptarsenus. Several other species in both Hemiptarsenus and Sympiesis were removed from the synonymy lists of different species and reinstated.