Definitions

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Cervical groove

See: Carapace groove c [Martin, 2005]
A groove or series of grooves sometimes present on the carapace; it is mesially transverse, laterally oblique, and separates the gatric and hepatic regions from the cardiac and branchial regions. [Chace and Hobbs, 1969]
Groove across the middle of the carapace between gastric and cardiac regions, curving forwards laterally, sometimes incomplete medially, sometimes accompanied by cervical ridge and ending laterally in cervical incision in some lobsters, sometimes with paired postcervical spines. [Poore, 2004]
Major arclike suture (groove) on carapace of crayfish, dividing it into anterior (cephalic) and posterior (thoracic) regions (see Fig. 14). [Hobbs and Jass, 1988]
The complex groove running along the dorsal surface of the carapace, being transverse in the middle and turning obliquely forward on each side to the lateral margins. [Ingle, 1983]
The major arc-like suture on the carapace of a crayfish, dividing it into cephalic and thoracic regions. [Hobbs, Hobbs, and Daniel 1977]
(Taxon-specific: Order Notostraca) Somewhat curved, transverse groove in anterior third of carapace; corresponds to border of head and thorax. (See also mandibular groove). [Stachowitsch, 1992]
(Taxon-specific: Order Diplostraca) transverse groove across dorsal surface of head; corresponds to level of mandibles. [Stachowitsch, 1992]
(Taxon-specific: Order Decapoda) See: Carapace grooves, Stomatopod integumental ornamentation [McLaughlin, 1980]
(Taxon-specific: Order Decapoda) On carapace, well-defined, transverse groove separating gastric and cardiac regions. Considered to represent former border between two cephalic somites.
(syn. cervical suture, cervical furrow) [Stachowitsch, 1992]
(Taxon-specific: Order Stomatopoda) Transverse groove across posterior third of carapace. (See also gastric groove). [Stachowitsch, 1992]
(Taxon-specific: Subclass Branchiura) In carapace, transverse groove delimiting cephalon (including first thoracic somite) from remaining three thoracic somites (pereon).
(syn. transverse groove) [Stachowitsch, 1992]
(Taxon-specific: Superorder Syncarida) In anaspidacean, transverse groove across head.
(syn. mandibular groove, mandibular sulcus) [Stachowitsch, 1992]
(Taxon-specific: Order Euphausiacea) Transverse groove across anterior region of carapace. [Stachowitsch, 1992]