alternative definition added over 14 years ago by Istvan Miko
A longitudinal groove along the dorsal length of each first valvula, into
which is fitted the rhachis of the second valvulae to form the tongue-and-groove olistheter interlocking mechanism of the ovipositor stylets.
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.