The part of the mesoscutellum that protrudes posteriorly as a distinct shape beyond any smooth or straight posterior outline, especially when protruding posteriorly past the anterior margin of the metanotum
written by: Forshage, M., and G. Nordlander. 2008. Identification key to European genera of Eucoilinae (Hymenoptera, Cynipoidea, Figitidae). 39:341-359.