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Taxon profile

species

Indomitrella conspersa (Gaskoin, 1852)

kingdom Animalia - animals »  phylum Mollusca - mollusks »  class Gastropoda - gastropods »  order Neogastropoda »  family Columbellidae - Dove Shells »  genus Indomitrella

Scientific synonyms

Columbella conspersa J.S. Gaskoin, 1851
Mitrella conspersa Gaskoin, 1852
Columbella alabastrum Reeve, 1859
Mitrella alabastrum (Reeve, 1859)
Mitrella alabastroides W. Kobelt, 1895
Mitrella conspersa circulata R.P.J. Hervier, 1899
Mitrella compersa J.S. Gaskoin, 1851
Columbella contaminata Gaskoin, 1851
Mitrella contaminata J.S. Gaskoin, 1851
Mitrella conspersa diluta R.P.J. Hervier, 1899

Images

Indomitrella conspersa

Author: Jan Delsing

Indomitrella conspersa

Author: Jan Delsing

Indomitrella conspersa

Author: Jan Delsing

Indomitrella conspersa

Author: Monsecour & Monsecour

Indomitrella conspersa

Author: Schepman. M.M.

Indomitrella conspersa

Author: Thiele, J.

Indomitrella conspersa

Author: Melvill & Standen

Indomitrella conspersa

Author: Marais, A. P. & Seccombe, A. D.

Indomitrella conspersa

Author: Monsecour & Monsecour

Taxon in country check-lists*

* List of countries might not be complete

Description

Protoconch of about 1,5 smooth whorls. Colour pattern of teleoconch variable, but the white and brown subsutural band that continues onto the body whorl is constant; aperture purple-tinted in adult specimens. Adult length varies from 8,2 to 14,2 mm. Empty shells found at depths ranging from 12 to 310 m.
Drivas, J. & Jay, M., 1990. The Columbellidae of Reunion Island (Mollusca: Gastropoda).
This species is probably one of the most often confused of the Indo-Pacific columbellids. It is typically placed in Mitrella, however Okutani (2000) most recently placed it in Indomitrella, probably because of the axial sculpture on the early spire whorls. Because it is most often confused with Indomitrella puella, it seems reasonable to keep them both in the same generic group. Cernohorsky (1972) and Higo et al. (1990) treat this species as a synonym of Indomitrella puella (Sowerby, 1844). Drivas & Jay (1990, 1997a, 1997b) have reported finding this species at various locations in the western Indian Ocean, however their figures show shells that lack axial sculpture on the spire whorls and also lack parietal denticles; so it seems likely that their specimens are misidentified. There is very possibly a cluster of similar species which are at this point poorly differentiated in the literature. The shell is heavy, porcelainous and white, with brown markings, often arranged around a white spiral band at the middle of the body whorl. There are nodulose axial ribs on the first one or two spire whorls, and often on the back of the body whorl. The whorls are weakly shouldered. The aperture has both labial and often obscure parietal denticles, which are generally stained pink or lilac. Adults are 9 to 12 mm long with 5 to 7 teleoconch whorls; the protoconch is smooth, white, with 3.5 whorls.
Maintenon, M. de, 2008; Results of the Rumphius Biohistorical Expedition to Ambon (1990). Part 14. The Columbellidae (Gastropoda: Neogastropoda) collected at Ambon during the Rumphius Biohistorical Expedition
Providence Reef, Mascarenes, 24 fins.; and He des Neufs, Amirantes, in 15 fins.
Reeve's figure is fairly good in respect of form but misleading as regards the colour of this species. It is a whitish or pinkish-white shell, having the upper and lower parts of the whorls edged with opaque white, and a narrow zone of the same colour round the middle of the body-whorl. It is also blotched with olive-yellow and dotted with that tint upon the opaque bands. The labrum and columella are tinged with lilac-pink, the former being armed with seven or eight denticles and the latter with about six transverse tubercles upon a prominent callosity.
Smith, E.A., 1884. Report on the zoological collections made in the Indo-Pacific Ocean during the voyage of H.M.S. 'Alert' 1881-2.

Distribution

Philippines and New Caledonia to Reunion and Mauritius.
Author: Jan Delsing

Similar species

Indomitrella strongae K. Monsecour & D. Monsecour, 2016

Links and literature

EN Galli C.: WMSDB - Wolrdwide Mollusc Species Data Base July 10, 2013 [http://www.bagniliggia.it/WMSD/WMSDhome....] [as Mitrella alabastrum Reeve, 1859]
Data retrieved on: 23 November 2013
EN Galli C.: WMSDB - Wolrdwide Mollusc Species Data Base July 10, 2013 [http://www.bagniliggia.it/WMSD/WMSDhome....] [as Mitrella conspersa (Gaskoin, 1851)]
Data retrieved on: 23 November 2013

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