Alvania cimex is a species of small sea snail, a marine gastropod mollusk or micromollusk in the family Rissoidae.
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.Oliver J.D., Calvo M., Guallart J., et al. 2015. Gasterópodos marinos de las islas Chafarinas (Mediterráneo suroccidental). Iberus 33: 97-150. They share in the phylogram the same 16S and 28S sequences.
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.G.W. Tryon (1884), Manual of conchology, structural and systematic : with illustrations of the species; Academy of Natural Sciences ser. 1, vol. 9
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
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 Linnaeus, C. (1758). Systema Naturae per regna tria naturae, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis. Editio decima, reformata [10th revised edition, vol. 1: 824 pp. Laurentius Salvius: Holmiae] Thanasis Manousis, The Marine Mollusca of Greece: an up-to-date, systematic catalogue, documented with bibliographic and pictorial references Glibert, M. (1962). Les Mesogastropoda fossiles du Cénozoïque étranger des collections de l'Institut Royal des Sciences Naturelles de Belgique. Première partie. Cyclophoridae à Stiliferidae (inclus). Institut Royal des Sciences naturelles de Belgiques, Mémoires. Deuxième série. 69: 1-305