''Calthalotia strigata'' is a

species A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ...

sea snail Sea snails are slow-moving marine (ocean), marine gastropod Mollusca, molluscs, usually with visible external shells, such as whelk or abalone. They share the Taxonomic classification, taxonomic class Gastropoda with slugs, which are distinguishe ...

, a marine

gastropod Gastropods (), commonly known as slugs and snails, belong to a large Taxonomy (biology), taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, freshwater, and fro ...

mollusk Mollusca is a phylum of protostomic invertebrate animals, whose members are known as molluscs or mollusks (). Around 76,000 extant species of molluscs are recognized, making it the second-largest animal phylum after Arthropoda. The ...

in the

family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...

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. MolluscaBase eds. (2022). MolluscaBase. Calthalotia strigata (A. Adams, 1853). Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=719243 on 2022-02-13

Description

The size of the adult shell varies between 10 mm and 23 mm. The subperforate shell has an elevated-conical shape. It is painted with longitudinal stripes of white and red or green or with longitudinal purplish flammules. The plane

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). In nature File:Photograph and axial plane floral diagra ...

s are concave in the middle. They show at the sutures a prominent rounded ridge, transversely lirate. The lirae are equal and subgranulose. The base of the shell is concentrically lirate, with radiating striae in the interstices. The

aperture In optics, the aperture of an optical system (including a system consisting of a single lens) is the hole or opening that primarily limits light propagated through the system. More specifically, the entrance pupil as the front side image o ...

is subquadrate. The

lip The lips are a horizontal pair of soft appendages attached to the jaws and are the most visible part of the mouth of many animals, including humans. Mammal lips are soft, movable and serve to facilitate the ingestion of food (e.g. sucklin ...

is arcuate, ending anteriorly in an obtuse tooth. The lip is obsoletely sulcate within.Tryon (1889), Manual of Conchology XI, Academy of Natural Sciences, Philadelphia
(described as ''Cantharidus mundula'')

Distribution

This marine species is

endemic Endemism is the state of a species being found only 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 foun ...

to Australia and occurs off

Western Australia Western Australia (WA) is the westernmost state of Australia. It is bounded by the Indian Ocean to the north and west, the Southern Ocean to the south, the Northern Territory to the north-east, and South Australia to the south-east. Western Aust ...

References

* Adams, A. & Angas, G.F. 1864. ''Descriptions of new species of shells, chiefly from Australia in the collection of Mr Angas.'' Proceedings of the Zoological Society of London 1864: 35–40 * Hedley, C. 1908. ''Studies on Australian Mollusca. Part 10.'' Proceedings of the Linnean Society of New South Wales 33: 456–489 * Hickman, C.S. & McLean, J.H. 1990. ''Systematic revision and suprageneric classification of trochacean gastropods''. Natural History Museum of Los Angeles County. Science Series 35: i–vi, 1–169 * Wilson B. (1993) ''Australian marine shells. Prosobranch gastropods. Vol. 1.'' Odyssey Publishing, Kallaroo, Western Australia, 408 pp

External links

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
* {{DEFAULTSORT:Calthalotia Strigata strigata Gastropods of Australia Gastropods described in 1853