Trahvidella

Trahvidella is a genus of small, freshwater snails with a gill and an operculum, an external shell. It is a member of the family Lymnaeidae, the pond snails. The genus was first described by the French malacologist Jean-Baptiste de Lamarck in 1822. Trahvidella species are found in Europe, with the majority of species occurring in the Mediterranean region.

The shell of Trahvidella species is typically low-spired, with a smooth surface and a rounded apex. The shell is usually white or cream-colored, with a brown or reddish-brown periostracum. The operculum is usually brown or reddish-brown, with a smooth surface.

Trahvidella species are herbivorous, feeding on algae and other plant material. They are often found in shallow, still waters, such as ponds and marshes. The genus is of particular interest to malacologists due to its unique shell morphology and its distribution in the Mediterranean region.

Trahvidella species are not considered to be of conservation concern, as they are widely distributed and have a stable population. However, like all freshwater snails, they are vulnerable to habitat loss and pollution. Conservation efforts should focus on protecting their natural habitats and reducing pollution in freshwater ecosystems.