''Calthalotia strigata'' 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, a marine gastropod

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 group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...

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 resemb ...

, 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). Whorls in nature File:Photograph and axial plane floral ...

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, 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 ...

is subquadrate. The

lip The lips are the visible body part at the mouth of many animals, including humans. Lips are soft, movable, and serve as the opening for food intake and in the articulation of sound and speech. Human lips are a tactile sensory organ, and can be ...

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 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 else ...

to Australia and occurs off

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

* 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