Diloma

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Diloma
Diloma subrostrata subrostrata.JPG
A shell of Diloma subrostrata
Diloma orientalis 01.JPG
Five views of a fossil shell of Diloma orientalis (Cossmann & Peyrot, 1917)
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Vetigastropoda
Order: Trochida
Superfamily: Trochoidea
Family: Trochidae
Genus: Diloma
Philippi, 1845 [1]
Type species
Turbo nigerrimus
Gmelin, 1791
Species

See text

Synonyms [2]
  • AnisodilomaFinlay, 1926
  • CavodilomaFinlay, 1926
  • FractarmillaFinlay, 1926
  • MelagraphiaGray, 1847
  • NeodilomaP. Fischer, 1885
  • ZedilomaFinlay, 1926

Diloma is a genus of medium-sized sea snails, marine gastropod mollusks in the family Trochidae, the top snails. [2]

Contents

There is also a genus Diloma, F.H.Wind & P.Cepek, 1979 a genus of phytoplankton in the class Prymnesiophyceae

Description

The solid shell is imperforate and depressed globose. It is slate-colored or black, sometimes (especially if worn) reddish or brownish. The conic spire is short. The apex is acute, usually reddish. The sutures are linear. The five whorls are slightly convex, rapidly increasing and spirally obsoletely striate. The body whorl is usually depressed or subconcave below the suture. The base of the shell is rounded, eroded and iridescent in front of the aperture. The aperture is huge, oblique iridescent. The outer lip is rather thin, not black-margined within; but bordered by a brilliantly iridescent band; The columella is concave, obsoletely subdentate below, very broad and flattened or excavated on the face. It is composed principally of an opaque white layer which also lines the base but does not extend to the edge of the lip. The length of the shell varies between 15 mm and 26 mm. Its diameter varies between 17 mm and 24 mm. [3]

Distribution

This genus occurs in the Indo-Pacific, including New Zealand, Japan, and other areas. [4]

Species

Phylogram of the species in the genus Diloma: [4]

Diloma

Diloma samoaense Schwabe & Barclay, 2003

Diloma radula (Philippi, 1849)

Diloma aethiops Gmelin, 1791

Diloma subrostrata (Gray in Yate, 1835)

Diloma concamerata (Wood, 1828)

Diloma zelandica (Quoy & Gaimard, 1834)

Diloma crusoeana (Pilsbry, 1889)

Diloma nigerrima (Gmelin, 1791)

Diloma bicanaliculatum (Dunker, 1844)

Diloma arida (Finlay, 1927)

Diloma coracina (Philippi, 1851)

Other species in the genus not included in the phylogram include: [5] [6]

Species brought into synonymy:

Related Research Articles

<i>Tegula</i> (gastropod) Genus of small to medium-sized sea snails

Tegula is a genus of small to medium-sized sea snails, marine gastropod molluscs in the family Tegulidae.

<i>Trochus</i> Genus of gastropods

Trochus is a genus of medium-sized to large, top-shaped sea snails with an operculum and a pearly inside to their shells, marine gastropod molluscs in the subfamily Trochinae of the family Trochidae, the top snails.

<i>Xenophora</i> Genus of gastropods

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<i>Gibbula</i> Genus of gastropods

Gibbula is a genus of small sea snails, marine gastropod molluscs in the subfamily Cantharidinae of the family Trochidae, the top snails.

<i>Diloma bicanaliculatum</i> Species of gastropod

Diloma bicanaliculatum, common name the knobbed top shell, is a species of small sea snail, a marine gastropod mollusk, in the family Trochidae, the top snails. The size of the shell varies between 10 mm and 20 mm.

<i>Diloma nigerrimum</i> Species of gastropod

The bluish top shell is a species of small sea snail, a marine gastropod, in the family Trochidae, the top snails.

<i>Clanculus</i> Genus of gastropods

Clanculus is a genus of sea snail, marine gastropod molluscs of the family Trochidae, the top shells.

<i>Turbo</i> (gastropod) Genus of molluscs

Turbo is a genus of large sea snails with gills and an operculum, marine gastropod molluscs in the family Turbinidae, the turban snails.

<i>Tanea</i> Genus of gastropods

Tanea is a genus of sea snails, marine gastropod molluscs in the subfamily Naticinae ( of the family Naticidae, the moon snails or necklace shells.

<i>Natica</i> Genus of gastropods

Natica is a genus of small to medium-sized predatory sea snails, marine gastropods in the subfamily Naticinae of the family Naticidae, the moon snails. The genus was erected by Giovanni Antonio Scopoli in 1777.

<i>Nerita</i> Genus of gastropods

Nerita is a genus of medium-sized to small sea snails with a gill and an operculum, marine gastropod molluscs in the subfamily Neritinae of the family Neritidae, the nerites.

<i>Cantharidus</i> Genus of gastropods

Cantharidus, common name the kelp shells, is a genus of sea snails, marine gastropod molluscs of the family Trochidae, the top shells.

<i>Austrocochlea</i> Genus of gastropods

Austrocochlea is a genus of medium-sized sea snails, marine gastropod molluscs in the family Trochidae, the top snails, also known as top shells.

Fusus is a genus of small to large sea snails, marine gastropod molluscs in the family Fasciolariidae, the spindle snails and tulip snails.

<i>Oxystele sinensis</i> Species of gastropod

Oxystele sinensis, common name the pink-lipped topshell, is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.

<i>Euchelus</i> Genus of gastropods

Euchelus is a genus of sea snails, marine gastropod mollusks in the family Chilodontaidae.

<i>Monodonta</i> Genus of gastropods

Monodonta is a genus of sea snails, marine gastropod mollusks in the family Trochidae, the top snails.

<i>Oxystele</i> Genus of sea snails

Oxystele is a genus of sea snails, marine gastropod mollusks in the family Trochidae, the top snails. Although previously suggested as a subgenus of Diloma, genetic analysis has shown it to be more appropriate as its own genus.

<i>Notocochlis</i> Genus of gastropods

Notocochlis is a genus of predatory sea snails, marine gastropod mollusks in the subfamily Naticinae of the family Naticidae, the moon snails.

<i>Chlorodiloma adelaidae</i> Species of gastropod

Chlorodiloma adelaidae is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.

References

  1. ↑ Philippi R. A. (1845). Abb. u. Beschr. Conch.1(8): 188.
  2. 1 2 Bouchet, P. (2010). Diloma Philippi, 1845. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=391149 on 2011-07-02
  3. ↑ Tryon (1889), Manual of Conchology XI, Academy of Natural Sciences, Philadelphia
  4. 1 2 Donald, Kirsten M.; Kennedy, Martyn; Spencer, Hamish G. (2005). "The phylogeny and taxonomy of austral monodontine topshells (Mollusca: Gastropoda: Trochidae), inferred from DNA sequences☆". Molecular Phylogenetics and Evolution. 37 (2): 474–483. doi:10.1016/j.ympev.2005.04.011.
  5. ↑ "Diloma". Integrated Taxonomic Information System.
  6. ↑ Powell A. W. B., New Zealand Mollusca, William Collins Publishers Ltd, Auckland, New Zealand 1979 ISBN   0-00-216906-1
  7. ↑ Spencer H. G., Marshall B. A. & Waters J. M. (2009). "Systematics and phylogeny of a new cryptic species of Diloma Philippi (Mollusca: Gastropoda: Trochidae) from a novel habitat, the bull kelp holdfast communities of southern New Zealand". Invertebrate Systematics 23: 19-25. doi : 10.1071/IS08030. PDF.
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