Genus Isostasius Förster, 1856

Isostasius Förster, 1856: 106, 109–110. Type species Platygaster punctiger Nees, 1834 by monotypy.

Remarks

Isostasius is remarkable in that the female metasoma has only three visible tergites. The genus was treated by Masner & Huggert (1989). The type species is Platygaster punctiger Nees, 1834, and we consider the type material to be destroyed. There are seven males in the NHMW labeled as original exemplars, but these are not suitable for neotype designation. A female neotype would be more appropriate, due to the sex-specific metasomal structure.