Anteroventral region of carapace (anterior part of branchiostegite of Caridea) or ventral region of carapace (of Brachyura); bearing pterygostomial spine at anteroventral angle (in Caridea and Dendrobranchiata) [Poore, 2004].
(Order Decapoda):
See: carapace regions (k) [McLaughlin, 1980].
(Order Decapoda):
On ventral side of carapace, one of two anterolateral regions flanking buccal cavity [Stachowitsch, 1992].
Crustacea glossary. Natural History Museum of Los Angeles County. 2011.