occludent margin

occludent margin
(ARTHROPODA: Crustacea)
In Cirripedia, the margin of the scutum and tergum bordering the orifice.

Online Dictionary of Invertebrate Zoology. . 2005.

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  • occludent margin — In cirripeds, margin of scutum and tergum forming aperture and occluding with comparable margins of opposed scutum [Moore and McCormick, 1969]. (Subclass Cirripedia): Barnacle plate feature: margin of scutum or tergum facing aperture… …   Crustacea glossary

  • occludent teeth — In cirripeds, small projections on occludent scutal margin formed by extensions of external growth ridges that interdigitate with similar teeth on margin of opposed scutum [Moore and McCormick, 1969]. (Subclass Cirripedia): Barnacle plate feature …   Crustacea glossary

  • occludent teeth — (ARTHROPODA: Crustacea) In Cirripedia, small projections on the occludent scutal margin interdigitating with the teeth on the margin of the opposed scutum …   Dictionary of invertebrate zoology

  • adductor pit — In cirripeds, depression on interior of scutum for attachment of adductor muscle, located between adductor ridge and occludent margin [Moore and McCormick, 1969]. (Subclass Cirripedia): Barnacle plate feature: on inner surface of scutum,… …   Crustacea glossary

  • scutum — Paired plate or valve of thoracic Cirripedia; in lepadomorphs, 1 on each side of occludent margin of capitulum. In verrucomorphs, of two types: fixed scutum, 1 of 4 compartmental plates; movable scutum, 1 of 2 opercular plates [McLaughlin, 1980] …   Crustacea glossary

  • tergum — Arched dorsal part of abdominal somites [Poore, 2004]. Arched dorsal part of each of the anterior five abdominal somites (Fig. 1). (Pl. terga) [Perez Farfante and Kensley, 1997]. Dorsal part of exoskeleton comprising tergites of all body somites… …   Crustacea glossary

  • adductor pit — (ARTHROPODA: Crustacea) Depression on the inner surface of the scutum between the adductor ridge and the occludent margin for the attachment of the adductor muscle of certain barnacles …   Dictionary of invertebrate zoology

  • scutum — n.; pl. scuta [L. scutum, shield] 1. Any long, horny or chitinous plate. 2. (ARTHROPODA: Chelicerata) In Acari, the large, anteriodorsal sclerite. 3. (ARTHROPODA: Crustacea) In thoracic barnacles, a paired plate or valve. a. In Lepadomorpha, one… …   Dictionary of invertebrate zoology

  • aperture — Posteroventral opening into cirriped mantle cavity [Moore and McCormick, 1969]. (Subclass Cirripedia): ( ) [Anderson, 1980]. Lepas anatifera: rostral view; and left valve and cirri removed. [Anderson, 1980] (Subclass Cirripedia): In barnacle,… …   Crustacea glossary

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