nuchal organ

nuchal organ
Sense organ on upper side of head in many branchiopods. (Syn. neck organ) [Moore and McCormick, 1969].
(Class Branchiopoda):
Sense organ on upper side of cephalon. (Syn. neck organ) [McLaughlin, 1980].
(Order Cladocera):
Frontal organ [Stachowitsch, 1992].
(Order Notostraca):
Dorsal organ [Stachowitsch, 1992].
(Order Anostraca):
Unpaired median sensory organ located on dorsal surface of head; visible beneath cuticle. (Syn. neck organ) [Stachowitsch, 1992].
(Subclass Copepoda):
Organ associated with specialised areas of modified integument, possibly with osmoregulatory function, typical of fresh and brackish water taxa [Boxshall and Halsey, 2004].

Crustacea glossary. . 2011.

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