rostral notch

rostral notch
See: rostral incisure [McLaughlin, 1980].
(Class Ostracoda):
In anteroventral region of carapace, indentation of each valve below (posterior to) rostrum. Gaping, thus permitting protrusion of antennae when valves are closed (gape itself occasionally referred to as rostral incisure) [Stachowitsch, 1992].

Crustacea glossary. . 2011.

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  • rostral notch — see rostral incisure …   Dictionary of invertebrate zoology

  • rostral incisure — (Class Ostracoda): Gap below rostrum in anterior margin of valve for protrusion of antenna. (Syn. rostral notch) [McLaughlin, 1980]. (Class Ostracoda): Rostral notch [Stachowitsch, 1992] …   Crustacea glossary

  • rostral incisure — (ARTHROPODA: Crustacea) In Ostracods, a gap between the rostrum in the anterior margin of the valve allowing for protrusion of the antenna (second antenna); rostral notch …   Dictionary of invertebrate zoology

  • rostrum — (1) Anteriorly projecting, unpaired, usually rigid median extension of carapace between eyes or ocular peduncles; (2) anterior beaklike projection of valve margins overhanging incisure or notch (Ostracoda); (3) unpaired anteroventral plate of… …   Crustacea glossary

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  • beak — (Class Ostracoda): Downwardly directed (anteroventral) projection of carapace margin. Not equivalent to rostrum and not associated with rostral notch [Stachowitsch, 1992] …   Crustacea glossary

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