alternative definition added about 14 years ago by Istvan Miko
The ventrally curved portion of the posterior margin of the forewing, onto which
hook the hamuli of the hind wing to couple the forewing and hind wing together during
flight.
Reference: Gibson , G. A. P., J. D. Read , and R. Fairchild. 1998. Chalcid wasps (Chalcidoidea): illustrated glossary of positional and morphological terms ..
Cross reference:
None provided.