Limnatis (annelid)

Limnatis is a genus of leeches belonging to the order Arhynchobdellida and the family Hirudinidae. These freshwater leeches are characterized by their lack of a proboscis (hence, Arhynchobdellida, meaning "no proboscis jaw leeches") and possess jaws equipped with teeth for feeding.

Limnatis species are found in various regions, particularly in Europe and the Mediterranean area. A prominent species within this genus is Limnatis nilotica, commonly known as the horse leech or Mediterranean leech.

Limnatis nilotica is known for its parasitic feeding habits, typically attaching to mammals, including livestock and humans, to feed on their blood. The leech attaches to the host's mucous membranes, often in the oral or nasal cavities, causing irritation and potential complications such as bleeding, secondary infections, and, in rare cases, asphyxiation. Due to its impact on human and animal health, Limnatis nilotica has significant veterinary and medical importance in regions where it is prevalent.

The genus Limnatis, along with other members of the Hirudinidae family, plays a role in aquatic ecosystems, although their parasitic nature often draws more attention to their negative impacts on hosts. Research into Limnatis species focuses on understanding their biology, distribution, and methods for preventing and treating infestations.