Anisus septemgyratus is a species of air-breathing freshwater snail, an aquatic pulmonate gastropod mollusk in the family Planorbidae, the ram's horn snails.
Taxonomy Glöer (2002) Glöer P. (2002). Die Süßwassergastropoden Nord- und Mitteleuropas. Die Tierwelt Deutschlands, ConchBooks, Hackenheim, 326 pp., , page 254-263. considered Anisus septemgyratus (Rossmässler, 1835) as a junior synonym of Anisus leucostoma (Millet, 1813). Later Glöer & Meier-Brook (2008)Glöer P. & Meier-Brook C. (2008). "Redescription of Anisus septemgyratus (Rossmässler, 1835) and Anisus leucostoma (Millet, 1813) (Gastropoda: Planorbidae)". Mollusca 26(1): 89–94. used name Anisus septemgyratus again.
Horsák et al. (2013)Horsák M., Juřičková L. & Picka J. (2013). Měkkýši České a Slovenské republiky. Molluscs of the Czech and Slovak Republics. Kabourek, Zlín, 264 pp. consider Anisus calculiformis (Sandberger, 1874) as a synonym of Anisus septemgyratus.
Distribution This species occurs in countries and islands including:
Czech Republic Horsák M., Juřičková L., Beran L., Čejka T. & Dvořák L. (2010). "Komentovaný seznam měkkýšů zjištěných ve volné přírodě České a Slovenské republiky. [Annotated list of mollusc species recorded outdoors in the Czech and Slovak Republics]". Malacologica Bohemoslovaca, Suppl. 1: 1–37. PDF. – in Moravia, critically endangered (CR)Red List of the molluscs (Mollusca) of the Czech Republic Slovakia Poland British Isles
Description The number of prostate diverticles ranges from 30 to more than 50.
References
External links Anisus septemgyratus at Animalbase