Diloma subrostratum

Diloma subrostratum
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Vetigastropoda
Order:	Trochida
Superfamily:	Trochoidea
Family:	Trochidae
Genus:	Diloma
Species:	D. subrostratum
Binomial name
Diloma subrostratum (Gray, 1835)
Synonyms
Chlorostoma undulosumA. Adams, 1853 Diloma (Fractarmilla) subrostrata subrostrata(Gray, J.E. in Yate, 1835) Diloma plumberaHutton, 1882 Diloma subrostratum novaezelandiae(Anton, 1838) Diloma subrostratum subrostratum(J. E. Gray, 1835) Labio corrosaA. Adams, 1853 Labio hectoriHutton, 1873 Labio picaA. Adams, 1853 Monodonta subrostrataGray, 1835 Trochus attritusHombron, and Jacquinot, 1854 Trochus novaezelandiaeAnton, 1838 Zediloma (Fractarmilla) corrosa(A. Adams, 1853) Zediloma (Fractarmilla) corrosa zebrinaA. W. B. Powell, 1946 [1]

Diloma subrostratum, common name the mudflat top shell, is a species of small sea snail, a marine gastropod mollusk in the family Trochidae, the top snails. ^[2]

Description

The length of the adult shell of this species varies between 11 mm and 32 mm. The solid, conical shell is suborbicular. It is often more or less black, with close wavy longitudinal yellow lines. The spire is short with five whorls. The last whorl is large, rounded, with its hinder part with three to six spiral keels. The axis is imperforated. The inside of the aperture is smooth and silvery. ^[3]

Distribution

This common estuarine species is endemic to New Zealand, occurring in the North and South Islands, and in Stewart Island. ^[4]

References

1. Powell, A. W. B. (1946). "New Species of New Zealand Mollusca from the South Island, Stewart Island, and Chatham Islands". Records of the Auckland Institute and Museum . 3: 137–144. ISSN   0067-0464. JSTOR   42905999. Wikidata   Q58676636.
2. Diloma subrostratum (J. E. Gray, 1835) . 18 November 2025. Retrieved through: World Register of Marine Species .
3. Tryon (1889), Manual of Conchology XI, Academy of Natural Sciences, Philadelphia (described as Monodonta subrostrata)
4. Cook, Steve De C., “New Zealand Coastal Marine Invertebrates Vol 1”, Canterbury University Press, NZ 2010, ISBN 978-1877257-60-5

• Miller M & Batt G, Reef and Beach Life of New Zealand, William Collins (New Zealand) Ltd, Auckland, New Zealand 1973
• Powell A. W. B., New Zealand Mollusca, William Collins Publishers Ltd, Auckland, New Zealand 1979 ISBN   0-00-216906-1
• Donald K.M., Kennedy M. & Spencer H.G. (2005) The phylogeny and taxonomy of austral monodontine topshells (Mollusca: Gastropoda: Trochidae), inferred from DNA sequences. Molecular Phylogenetics and Evolution 37: 474-483.
• Bruce A. Marshall, Molluscan and brachiopod taxa introduced by F. W. Hutton in The New Zealand journal of science; Journal of the Royal Society of New Zealand, Volume 25, Issue 4, 1995

External links

• "Diloma (Fractarmilla) subrostrata subrostrata". Gastropods.com. Retrieved 16 January 2019.
• New Zealand Mollusca: Diloma subrostrata