Longitudinal groove or uncalcified line on dorsal part of carapace extending from anterior margin below antennal spine across entire length of carapace to its posterior edge (most thalassinoid decapods) [Moore and McCormick, 1969].
Longitudinal groove or uncalcified line on dorsal part of carapace extending from anterior margin below antennal spine to posterior margin in most thalassinoideans [McLaughlin, 1980].
Longitudinal lateral groove defining upper margin of branchiostegite in Thalassinidea [Poore, 2004].
(Order Decapoda):
On each side of carapace in certain decapods, longitudinal groove or uncalcified line extending from anterior region below antennal spine to posterior margin [Stachowitsch, 1992].
Crustacea glossary. Natural History Museum of Los Angeles County. 2011.