The central portion of the gastric region on the carapace of crabs [Chace and Hobbs, 1969].
The region on the dorsal surface of the carapace bounded by parts of the margins of the frontal, protogastric, and metagastric regions [Ingle, 1983].
(Order Decapoda):
Gastric region [Stachowitsch, 1992].
Crustacea glossary. Natural History Museum of Los Angeles County. 2011.