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Taxon profile

species

Pterynotus tripterus Von Born, 1778

kingdom Animalia - animals »  phylum Mollusca - mollusks »  class Gastropoda - gastropods »  order Neogastropoda »  family Muricidae - Muricids »  genus Pterynotus

Scientific synonyms

Pterymarchia triptera Born, 1778

Images

Pterynotus tripterus

Author: Jan Delsing

Pterynotus tripterus

Author: Jan Delsing

Pterynotus tripterus

Author: Jan Delsing

Pterynotus tripterus

Author: Jan Delsing

Pterynotus tripterus

Author: Kaicher

Pterynotus tripterus

Author: Radwin & D'Attilio

Taxon in country check-lists*

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Description

The shell is moderately small (maximum length 50 mm) and stoutly fusiform. Its spire is moderately high, with one and one-half nuclear whorls and seven or eight moderately shouldered postnuclear whorls. The suture is shallow and weakly defined. The body whorl is large and moderately broad. The aperture is moderate in size and subovate, with a weak anal sulcus and a strongly constricted anterior end. The outer apertural lip is erect, with a crenulate margin and eight strong denticles within. The columellar Up is adherent posteriorly, becoming progressively more erect anteriorly and bearing five to nine strong denticles distributed along its entire length. The siphonal canal is moderately short, narrowly open, and generally straight; vestiges of former canals ornament the region to the left of the canal.
The body whorl bears three broad, winglike varices, each well-developed across the shoulder, their margins indented to form two or three lobes. The varices on the spire are reduced in size and are entire rather than lobate. Intervarical axial sculpture consists of one or two more or less developed costae. Spiral sculpture consists of numerous cords, the strongest medial on the body whorl. In unworn specimens the entire surface of the shell is finely, densely lamellose, most strongly so on the ventral surface of the last varix.Shell color is white or cream. The aperture is pale to deep yellow-orange.
Radwin, G.E. & D'Attilio, A., 1976. Murex Shells of the World. An Illustrated Guide to the Muricidae.

Distribution

Intertidal to subtidal, throughout the Indo-West Pacific.
Radwin, G.E. & D'Attilio, A., 1976. Murex Shells of the World. An Illustrated Guide to the Muricidae.
Author: Jan Delsing

Links and literature

EN Galli C.: WMSDB - Wolrdwide Mollusc Species Data Base July 10, 2013 [http://www.bagniliggia.it/WMSD/WMSDhome....] [as Pterymarchia triptera Born, 1778]
Data retrieved on: 23 November 2013

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