13–16 Labus robustus sp. n., holotype 13 habitus in dorsal view, ♂ 14 Head in frontal view, ♂ 15 propodeum in lateral view, ♂ 16 metasomal petiole, ♂ 17–19 Labus postpetiolatus Gusenleitner, 1988. 17 habitus in dorsal view, ♀ 18 propodeum in lateral view, ♀ 19 metasomal petiole, ♀.

 
 
  Part of: Li T-J, Carpenter JM (2018) A taxonomic account of the genus Labus de Saussure, 1867 (Hymenoptera, Vespidae, Eumeninae) with descriptions of three new species. Journal of Hymenoptera Research 65: 23-46. https://doi.org/10.3897/jhr.65.26976