''Diloma concameratum'', common name the speckled periwinkle, is a
species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...
of
sea snail
Sea snail is a common name for slow-moving marine gastropod molluscs, usually with visible external shells, such as whelk or abalone. They share the taxonomic class Gastropoda with slugs, which are distinguished from snails primarily by the ...
, a
marine
Marine is an adjective meaning of or pertaining to the sea or ocean.
Marine or marines may refer to:
Ocean
* Maritime (disambiguation)
* Marine art
* Marine biology
* Marine debris
* Marine habitats
* Marine life
* Marine pollution
Military
* ...
gastropod
The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda ().
This class comprises snails and slugs from saltwater, from freshwater, and from land. T ...
mollusk
Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is e ...
in the
family
Family (from la, familia) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its ...
Trochidae
The Trochidae, common name top-snails or top-shells, are a family of various sized sea snails, marine gastropod molluscs in the subclass Vetigastropoda. This family is commonly known as the top-snails because in many species the shell resembles ...
, the top snails.
[Bouchet, P. (2012). ''Diloma concameratum'' (Wood, 1828). Accessed through: ]World Register of Marine Species
The World Register of Marine Species (WoRMS) is a taxonomic database that aims to provide an authoritative and comprehensive list of names of marine organisms.
Content
The content of the registry is edited and maintained by scientific specialist ...
at http://www.marinespecies.org/aphia.php?p=taxdetails&id=546858 on 2012-11-23
Description
The height of the shell varies between 15 mm and 27 mm, the diameter between 23 mm and 25 mm. The very thick and solid, imperforate shell has a globose-conical shape and is generally rather depressed. Its color is yellow and black, tessellated or longitudinally striped, sometimes the black, sometimes the yellow predominating. The
spire
A spire is a tall, slender, pointed structure on top of a roof of a building or tower, especially at the summit of church steeples. A spire may have a square, circular, or polygonal plan, with a roughly conical or pyramidal shape. Spires are ...
is a very short cone. The
apex is usually perfect and acute, often ruddy. The five
whorl
A whorl ( or ) is an individual circle, oval, volution or equivalent in a whorled pattern, which consists of a spiral or multiple concentric objects (including circles, ovals and arcs).
Whorls in nature
File:Photograph and axial plane floral ...
s are slightly convex. The increase very rapidly in size. They are spirally strongly costate, the ridges 13 or 14 in number on the last whorl . The
body whorl
The body whorl is part of the morphology of the shell in those gastropod mollusks that possess a coiled shell. The term is also sometimes used in a similar way to describe the shell of a cephalopod mollusk.
In gastropods
In gastropods, the b ...
slightly descends at the aperture and is not eroded on the base. The large
aperture
In optics, an aperture is a hole or an opening through which light travels. More specifically, the aperture and focal length of an optical system determine the cone angle of a bundle of rays that come to a focus in the image plane.
An opt ...
is oblique. The outer
lip is margined within with yellow and black, followed by a nacreous and then by an opaque white thickening which more or less contracts the aperture and which is more or less notched at about the place of the periphery. The
columella is white, much narrower than in ''
Diloma aethiops''. It is bidenticulate below.
The more prominent characters of this species are the strong spiral ribs and the thick outer layer of yellow and purplish-black, or of black veined with yellow, which usually assumes a tessellated pattern. Sometimes, however, the black predominates to the almost entire exclusion of yellow, and specimens also occur in which the
black is scarcely visible on the surface.
Tryon (1889), Manual of Conchology XI, Academy of Natural Sciences, Philadelphia
(described as ''Monodonta striolata'' (Quoy & Gaimard, 1834))
Distribution
This marine species is endemic
Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsew ...
to Australia and occurs off New South Wales
)
, nickname =
, image_map = New South Wales in Australia.svg
, map_caption = Location of New South Wales in AustraliaCoordinates:
, subdivision_type = Country
, subdivision_name = Australia
, established_title = Before federation
, es ...
, South Australia
South Australia (commonly abbreviated as SA) is a state in the southern central part of Australia. It covers some of the most arid parts of the country. With a total land area of , it is the fourth-largest of Australia's states and territories ...
, Tasmania
)
, nickname =
, image_map = Tasmania in Australia.svg
, map_caption = Location of Tasmania in AustraliaCoordinates:
, subdivision_type = Country
, subdi ...
, Victoria and Western Australia
Western Australia (commonly abbreviated as WA) is a state of Australia occupying the western percent of the land area of Australia excluding external territories. It is bounded by the Indian Ocean to the north and west, the Southern Ocean to th ...
References
* Quoy, J.R. & Gaimard, J.P. 1834. ''Voyage de Découvertes de l'Astrolabe exécuté par Ordre du Roi, Pendant les Années 1826-1829''. Paris : J. Tastu Zoologie Vol. 3 366 pp
* Deshayes, G.P. 1843. ''Histoire naturelle des animaux sans vertèbres''. Paris : J.B. Baillière Vol. 9 728 pp
* Philippi, R.A. 1845. ''Abbildungen und Beschriebungen neuer oder wenig gekannter Conchylien''. Cassel : Theodor Fischer 40 pp.
* Forbes, E. 1852. ''On the Mollusca collected by Mr MacGillivray during the voyage of the Rattlesnake.'' pp. 360–386 in MacGillivray, J. (ed). Narrative of the Voyage of H.M.S. Rattlesnake, commanded by the late Captain Owen Stanley, R.N., F.R.S. etc., during the years 1846-1850. London : Lords Commissioners of the Admiralty Vol. II 395 pp.
* Adams, A. 1853. ''Contributions towards a monograph of the Trochidae, a family of gastropodous Mollusca''. Proceedings of the Zoological Society of London 1851(19): 150-192
* Angas, G.F. 1865. ''On the marine molluscan fauna of the Province of South Australia, with a list of all the species known up to the present time, together with remarks on their habitats and distribution, etc''. Proceedings of the Zoological Society of London 1865: 155-"180"
* Angas, G.F. 1867. ''List of species of marine Mollusca found in Port Jackson Harbour, New South Wales, and on the adjacent coasts, with notes on their habits, etc.'' Part 1. Proceedings of the Zoological Society of London 1867: 185-233
* Troschel, F.H. 1879. ''Das Gebiss der Schnecken, zur Begründung einer Natürlichen Classification'' y J. Thiele, written after Troschel's death Berlin : Nicolaische Verlagsbuchhandlung Vol. II 237 pp
* Watson, R.B. 1885: Zoology. Vol. XV(II). 50 pls, 756
* Watson, R.B. 1886. ''Report on the Scaphopoda and Gastropoda collected by the H.M.S. "Challenger" during the years 1873-1876''. Report on the Scientific Results of the Voyage of H.M.S. Challenger 1873–1876, Zoology 15(42): 756 pp., 50 pls
* Pilsbry, H.A. 1889. ''Manual of Conchology.'' Philadelphia : Academy of Natural Sciences Philadelphia Vol. 11 519 pp.,
* Hedley, C. 1917. ''Studies on Australian Mollusca. Part XIII''. Proceedings of the Linnean Society of New South Wales 41: 680-719
* Hedley, C. 1918. ''A checklist of the marine fauna of New South Wales. Part 1.'' Journal and Proceedings of the Royal Society of New South Wales 51: M1-M120
* May, W.L. 1921. ''A Checklist of the Mollusca of Tasmania''. Hobart, Tasmania : Government Printer 114 pp
* May, W.L. 1923. ''An Illustrated Index of Tasmanian Shells''. Hobart : Government Printer 100 pp.
* Thiele, J. 1930. ''Gastropoda und Bivalvia''. pp. 561–596 in Michaelsen, W. & Hartmayer, R. (eds). Die Fauna Südwest-Australiens. Jena : Gustav Fischer Vol. 5.
* Cotton, B.C. & Godfrey, F.K. 1934. ''South Australian Shells. Part 13''. South Australian Naturalist 1 16: 1-6
* Allan, J.K. 1950. ''Australian Shells: with related animals living in the sea, in freshwater and on the land.'' Melbourne : Georgian House xix, 470 pp., 45 pls, 112 text figs.
* Cotton, B.C. 1959. ''South Australian Mollusca. Archaeogastropoda''. Handbook of the Flora and Fauna of South Australia. Adelaide : South Australian Government Printer 449 pp.
* Iredale, T. & McMichael, D.F. 1962. ''A reference list of the marine Mollusca of New South Wales''. Memoirs of the Australian Museum 11: 1-109
* Macpherson, J.H. & Gabriel, C.J. 1962. ''Marine Molluscs of Victoria.'' Melbourne : Melbourne University Press & National Museum of Victoria 475 pp
* Wilson, B. 1993. ''Australian Marine Shells. Prosobranch Gastropods''. Kallaroo, Western Australia : Odyssey Publishing Vol. 1 408 pp.
* Wilson, B. 2002. ''A Handbook to Australian Seashells on Seashores East to West and North to South''. Sydney : Reed New Holland 185 pp
External links
To Encyclopedia of Life
To GenBank (8 nucleotides; 5 proteins)
To World Register of Marine Species
*
{{Commons category
concameratum
Gastropods described in 1828