The anatomical line
that is parallel with the longitudinal body
axis and the shortest among the anatomical lines that extend between the anterior and posterior margins of female T9
written by: Ernst, A., I. Mikó, and A. R. Deans. 2013. Morphology and function of the ovipositor mechanism in Ceraphronoidea (Hymenoptera: Apocrita). Journal of Hymenoptera Research.