Essex Biodiversity Project
Desmoulin's whorl snail
Identification - this small snail has a shell up to 2.7mm and up to 1.5mm wide. It is ball shaped with a very large last whorl. It has a massive out-turned lip. The shell spirals to the right. The shell is yellowish. (Cameron & Redfern 199?)
General ecology - this snail inhabits long established swamps, fens and marshes often bordering rivers and lakes. The snail climbs tall dead and living grass and sedge stems. It is sensitive to habitat disturbance, management and temperature change. It has been found in Essex along the Stort Valley in marshland sites. See photos and more information on the Arkive website http://www.arkive.org/desmoulins-whorl-snail/vertigo-moulinsiana/
Surveying tips - If you think you have found this snail please contact Essex Biodiversity project or the Environment Agency for more details.