cephalic flexure
Forward or even upward deflection of anterior sterna of some decapods [Moore and McCormick, 1969].
(Order Decapoda):
Foward, or sometimes upward, deflection of anterior sterna [McLaughlin, 1980].
(Order Decapoda):
On underside of cephalothorax, forward, or occasionally upward, deflection of anterior sternum [Stachowitsch, 1992].

Crustacea glossary. . 2011.

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