Endosomerna

Endosomerna is a genus of small, freshwater snails with a gill and an operculum, an internal shell. They are part of the family Hydrobiidae, which includes many other small freshwater snails. Endosomerna species are typically found in slow-moving or stagnant freshwater habitats, such as ponds, lakes, and marshes. They are known for their distinctive shell shape, which is often elongated and flattened, with a smooth or slightly ribbed surface.

The genus Endosomerna was first described by the German malacologist Karl Ludwig Koch in 1841. It is currently classified within the family Hydrobiidae, which is part of the superfamily Hydrobioidea. The genus includes several species, each with its own unique characteristics and distribution. For example, Endosomerna amnicola is found in Europe and Asia, while Endosomerna hibernica is native to North America.

Endosomerna species are herbivorous, feeding on algae and other plant material. They are also known to be intermediate hosts for several species of trematodes, which are flatworms that can cause disease in other animals. Endosomerna species are generally considered to be of low conservation concern, as they are widespread and adaptable. However, like all freshwater snails, they are sensitive to habitat degradation and pollution, and their populations can be affected by changes in water quality and quantity.