sternal grooves
A pair of obliquely placed grooves on the sternum of female crabs belonging to the Section Dromiacea [Ingle, 1980].
(Order Decapoda):
On ventral surface of cephalothorax in certain crab-like (brachyuran) decapods, one of two oblique grooves along sternum [Stachowitsch, 1992].

Crustacea glossary. . 2011.

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