''Collonista verruca'' is a species 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 ...

mollusc 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 esti ...

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 ...

Colloniidae Colloniidae is a family of small sea snails with calcareous opercula, marine gastropod mollusks in the clade Vetigastropoda.MolluscaBase eds. (2020). MolluscaBase. Colloniidae Cossmann, 1917. Accessed through: World Register of Marine Species at ...

.MolluscaBase eds. (2021). MolluscaBase. Collonista verruca (Gould, 1845). Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=833636 on 2021-05-01 The shells of this species, known in

Ni'ihau Niihau ( Hawaiian: ), anglicized as Niihau ( ), is the westernmost main and seventh largest inhabited island in Hawaii. It is southwest of Kauaʻi across the Kaulakahi Channel. Its area is . Several intermittent playa lakes provide wetland hab ...

as ''kahelelaniʻilaʻula'', are used to make leis.

Description

The size of the shell attains 4 mm. The small, solid shell has a short ovate-conic shape. it is imperforate or narrowly umbilicate. It is white with numerous revolving series of red or brown tessellations. 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 spirally lirate. The lira is largest at the middle of the whorl and causes sometimes a slight carina there. 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 ...

is slightly but abruptly deflected anteriorly. The circular

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 white. The white columella is arcuate and wide but not dentate below. The base of the shell has a minute internal denticle. Some specimens are almost entirely red; others are white, with red spots at the periphery. There is some variation in form, also, and in the prominence of the spiral riblets.G.W. Tryon (1888), Manual of Conchology X; Academy of Natural Sciences, Philadelphia
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Distribution

This marine species occurs in Oceania and Indo-Malaysia. The type species was found off

Hawaii Hawaii ( ; haw, Hawaii or ) is a state in the Western United States, located in the Pacific Ocean about from the U.S. mainland. It is the only U.S. state outside North America, the only state that is an archipelago, and the only stat ...

References

* Poppe G.T., Tagaro S.P. & Stahlschmidt P. (2015). New shelled molluscan species from the central Philippines I. Visaya. 4(3): 15–59.

External links

* http://www.manandmollusc.net/Niihau/Leptothyra-verruca.html *
Gould A.A. (1845). Descriptions of species of land shells, from the Sandwich Islands, supposed to be hitherto undescribed. Proceedings of the Boston Society of Natural History. 2: 26-28

Pease W. H. (1869). Description of new species of marine Gasteropodæ inhabiting Polynesia. American Journal of Conchology. 5: 64-79

Pilsbry, H. A. (1921). Marine mollusks of Hawaii, XIV-XV. Proceedings of The Academy of Natural Sciences of Philadelphia. 72: 360-383
{{Taxonbar, from=Q3169436 Colloniidae Niihau Gastropods described in 1845