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Taxon profile

species

Terebra subulata (Linnaeus, 1767)

kingdom Animalia - animals »  phylum Mollusca - mollusks »  class Gastropoda - gastropods »  order Caenogastropoda »  family Terebridae - Auger Shells »  genus Terebra

Size

Shell to 168 mm.

Distribution

Tropical Indo-Pacific; intertidal to 10 m.

Description

Color of shell cream with 2 rows of squarish brown spots per whorl, 3 on body whorl; outline of whorls straight; protoconch of 3 conical whorls; subsutural band with a row of small nodes on early whorls only, band marked by weak groove, sometimes followed by a second row of minute nodes, both fading completely; axial and spiral sculpture absent in later whorls except for microscopic growth striae, and rarely very weak, almost microscopic spiral punctations; aperture quadrate; columella recurved.
This species has harpoon-shaped radular teeth and a poison sac (Mills, 1979). Although it is considered not to have punctate sculpture, some large specimens, including the holotype, have several rows of extremely obsolete punctations.
(Bratcher & Cernohorsky)

Interchangeable taxa

T. subulata may be separated easily from the other large brown-spotted species, such as T. areolata, which has 3 rows of spots per whorl, 4 on body whorl, has ribbed early whorls, and retains the subsutural groove into maturity. T. subulata has only 2 rows of spots per whorl, 3 on the body whorl; no ribs on early whorls; and no subsutural groove on mature whorls. T. achates (3)) and T. consobrina (4) have spiral rows of well-marked punctations below the subsutural band. The early whorls of T. achates have 2 rows of heavy, well-developed round nodes, followed by about 4 rows of deep punctations.
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 Terebra subulata (Linnaeus, 1767)]
Data retrieved on: 23 November 2013
CZ Pfleger V. (1999): České názvy živočichů III. Měkkýši (Mollusca), Národní muzeum, (zoologické odd.), Praha, 108 pp. [as Terebra subulata (LINNÉ, 1767)]
Data retrieved on: 11 November 2013

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