Alvania cimex

Alvania cimex
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Order:	Littorinimorpha
Superfamily:	Rissooidea
Family:	Rissoidae
Genus:	Alvania
Species:	A. cimex
Binomial name
	Alvania cimex; (Linnaeus, 1758)
Synonyms
	Alvania cimicina Locard, 1886 (unjustified emendation); Alvania europea Risso, 1826; Alvania freminvillea Risso, 1826 ·; Alvania pyramidata Risso, 1826; Alvania (Turbona) cimex (Linnaeus, 1758); Rissoa calathicus auctt. (incorrect subsequent spelling); Rissoa calathiscus (Montagu, 1808); Rissoa cancellata Desmarest, 1814 nomen dubium; Rissoa cimex (Linnaeus, 1758); Rissoa granulata R. A. Philippi, 1836; Turbo calathiscus Montagu, 1808 (dubious synonym); Turbo cimex Linnaeus, 1758;

Alvania cimex is a species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Rissoidae.^[1]

Description

The length of the shell varies between 4 mm and 7 mm.

Alvania cimex and Alvania mamillata may be the same species, according to studies of Oliver et al. (2015), differing only in the larval life span.^[2] They share in the phylogram the same 16S and 28S sequences . ^[3]

The imperforate shell is strong and opaque. It is covered by rounded granules in longitudinal and spiral series. It is white or light fulvous to chestnut color, unicolored or bifasciate. The outer lip is thick, labiate and suleate within, white-varicose externally. ^[4]

Alvania cimex f. fusca
Alvania cimex f. fasciata
Alvania cimex f. lactea

Distribution

This species occurs in the Northeast Atlantic Ocean, Mediterranean Sea and in the Black Sea.

Fossils were found in Pleistocene strata near Palermo, Sicily and near Monastir, Tunisia.

References

^ Alvania cimex (Linnaeus, 1758). Gofas, S. (2009). Alvania cimex (Linné, 1758). In: Bouchet, P.; Gofas, S.; Rosenberg, G. World Marine Mollusca database. Accessed through the World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=141167 on 9 August 2010 .
^ Oliver J.D., Calvo M., Guallart J., et al. 2015. Gasterópodos marinos de las islas Chafarinas (Mediterráneo suroccidental). Iberus 33: 97-150.
^ Criscione, Francesco; Ponder, Winston Frank; Köhler, Frank; Takano, Tsuyoshi; Kano, Yasunori (2016). "A molecular phylogeny of Rissoidae (Caenogastropoda: Rissooidea) allows testing the diagnostic utility of morphological traits". Zoological Journal of the Linnean Society. doi:10.1111/zoj.12447.
^ G.W. Tryon (1884), Manual of conchology, structural and systematic : with illustrations of the species; Academy of Natural Sciences ser. 1, vol. 9 This article incorporates text from this source, which is in the public domain.

Cossmann (M.), 1921 - Essais de Paléoconchologie comparée. livraison 12, p. 1-349
Korobkov (I.A.), 1955 - Spravochnik I methodicheskoe revodstvo po tretichnym molliuskam. Briuckhonologie [= Manuel et guide des Mollusques tertiaires, Gastéropodes], p. 1-795

External links

[WoRMS-1] Alvania cimex (Linnaeus, 1758). Gofas, S. (2009). Alvania cimex (Linné, 1758). In: Bouchet, P.; Gofas, S.; Rosenberg, G. World Marine Mollusca database. Accessed through the World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=141167 on 9 August 2010 .

[2] Oliver J.D., Calvo M., Guallart J., et al. 2015. Gasterópodos marinos de las islas Chafarinas (Mediterráneo suroccidental). Iberus 33: 97-150.

[3] Criscione, Francesco; Ponder, Winston Frank; Köhler, Frank; Takano, Tsuyoshi; Kano, Yasunori (2016). "A molecular phylogeny of Rissoidae (Caenogastropoda: Rissooidea) allows testing the diagnostic utility of morphological traits". Zoological Journal of the Linnean Society. doi:10.1111/zoj.12447.

[4] G.W. Tryon (1884), Manual of conchology, structural and systematic : with illustrations of the species; Academy of Natural Sciences ser. 1, vol. 9 This article incorporates text from this source, which is in the public domain.

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