Tegula atra

Tegula atra
Drawings of two shells of Tegula atra
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Clade: Vetigastropoda
Superfamily: Trochoidea
Family: Tegulidae
Genus: Tegula (gastropod)
Species: T. atra
Binomial name
Tegula atra
(Lesson, 1830)
Synonyms
  • Chlorostoma atra Lesson, 1830
  • Tegula (Chlorostoma) atra (Lesson, 1830)
  • Trochus ater Lesson, 1830(original description)

Tegula atra is a species of sea snail, a marine gastropod mollusk in the family Tegulidae.[1]

Description

The size of the shell varies between 24 mm and 62 mm. The heavy, solid, imperforate shell has a conical shape and is more or less depressed. It is lusterless black. The about six whorls are, moderately convex, separated by impressed sutures. They are smooth, except for slight incremental striae. The body whorl is more or less depressed, and rounded or subangular at the periphery. The base of the shell is flattened, concave in the center, eroded and light purplish in front of the aperture. The aperture is very oblique. The outer lip is black-margined, smooth and pearly within. The columella is oblique, obtusely dentate in the middle. The umbilico-columellar tract is covered by a white callus, excavated at the position of the umbilicus, and bearing a spiral rib.[2]

Distribution

This species occurs in the Pacific Ocean off the Strait of Magellan (Chile) to Peru.

References

  1. ↑ Rosenberg, G. (2012). Tegula atra (Lesson, 1830). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=533469 on 2012-09-01
  2. ↑ Tryon (1889), Manual of Conchology XI, Academy of Natural Sciences, Philadelphia (described as Chlorostoma atra)
External identifiers for Tegula atra
Encyclopedia of Life 4795866
NCBI 80343
WoRMS 533469


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