antennulary part

antennulary part
(Subclass Mystacocarida):
Region of head (cephalon) anterior to cephalic constriction. Bears antennules, four ocelli, two anteromedian lobes (rostral plate), and two anterolateral (lateral) lobes. (posterolateral corner: obtuse, right-angled) [Stachowitsch, 1992].

Crustacea glossary. . 2011.

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  • cephalic constriction — (Subclass Mystacocarida): Constriction delimiting anterior antennulary part of head from posterior part [McLaughlin, 1980]. (Subclass Mystacocarida): Transverse groove dividing head (cephalon) into anterior (antennulary) and posterior parts… …   Crustacea glossary

  • rostral plate — A flat rostrum [Mauchline, 1984]. Anteriorly projecting, unpaired, movably articulated, median extension of carapace (e.g., Phyllocarida). See: rostrum, compound rostrum [Moore and McCormick, 1969]. (Subclass Phyllocarida): Anteriorly projecting …   Crustacea glossary

  • cephalic constriction — (ARTHROPODA: Crustacea) In Myastacocarida, a constriction delimiting anterior antennulary part of the head from the posterior part …   Dictionary of invertebrate zoology

  • lobe — (Subclass Mystacocarida): One of four (two anteromedian and two anterolateral = lateral) extension of anterior (antennulary) part of head (cephalon). Anteromedian lobes occasionally termed rostral plate. Configuration of lobes is of taxonomic… …   Crustacea glossary

  • cephalon — A term that refers to the head of a crustacean [Brusca and Brusca, 2002]. Anterior region of the body bearing the antennules, antennae, eyes, mandibles, maxillules, and maxillae [Holdich and Jones, 1983]. Anteriormost tagma, bearing eyes, mouth,… …   Crustacea glossary

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