Definitions

Insertions of attractor epimeralis muscle in brachyuran decapods lacking branchiocardiac groove. [McLaughlin, 1980]
Insertions of attractor epimeralis muscle in most Brachyura, in which the branchiocardiac groove has disappeared. [Moore and McCormick, 1969]
In crab-like (brachyuran) decapod, marking on each side of carapace formed by insertion of attractor epimeralis muscle (if normal point of insertion—branchiocardiac groove—is absent). [Stachowitsch, 1992]