A small, slender, many-segmented aquatic worm with a thin cuticle (body wall).

Unless identified by a recognised expert, a photo is required and the specimen should be examined with a microscope. In the comments box, state the key or ID method used and describe the size and identifying characters.

Freshwater environments, including streams, lakes, marshes, wells and groundwater.

Appears to be widespread in Britain.

Status in Leicestershire and Rutland not known.