The anterior invagination of the
labium that is adjacent with the distal end of the
salivarium and separates the
glossa proximally from the
distal hypopharynx and the paraglossae.
written by: Popovici, O. A., I. Mikó, K. Seltmann, and A. R. Deans. 2012. The maxillo-labial complex in Sparasion (Platygastroidea: Platygastridae). Journal of Hymenoptera Research in prep.