Carychium tridentatum is a species of small air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Ellobiidae.
Description
The shell is 1.8-2.3 mm high x 0.8-0.9mm. wide. The shell is more slender than that of Carychium minimum. If the last whorl above the aperture is opened this shows the parietalis (a spiral ridge on the parietal region projecting into the interior of the shell) descending in a characteristic double curve (see figure below).
Distribution This species occurs in European countries and islands the Mediterranean, the Caucasus region and North Africa. It is recorded from Siberia as Carychium striolatum J.R. Bourguignat, 1857 (synonym)Worldwide Mollusc Species Database
The European countries include: Belgium Bulgaria Czech Republic Netherlands Poland Slovakia Great Britain Ireland UkraineBalashov I. & Gural-Sverlova N. 2012. An annotated checklist of the terrestrial molluscs of Ukraine. Journal of Conchology. 41 (1): 91-109. Albania, Andorra, Austria, Azores, Belarus, Bulgaria, Channel Islands , Croatia, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Italy, Kaliningrad, Latvia, Liechtenstein, Lithuania, Luxembourg, Madeira, Moldova, Montenegro, Norway, Romania, Serbia, Slovenia, Spain, Sweden, Switzerland.Welter-Schultes, F. W. 2012. European non-marine molluscs, a guide for species identification. Bestimmungsbuch für europäische Land- und Süsswassermollusken. Planet Poster Editions, Göttingen.
It has been introduced to North America, including to: British Columbia, CanadaForsyth, R.G. & Williston, P. 2012. Terrestrial snails from an urban park in Vancouver, British Columbia. The Festivus 44(7):77-80.
References
External links
Carychium tridentatum at Animalbase MolluscIreland