It is the first cave-dwelling member of the suborder Cavernicola to have been observed in South America.

[1] Both the genus and species were named after Josef Hauser, a researcher of freshwater flatworms.

The pharynx is 0.9 millimetres (0.035 in) long, and along with the gonopore is located in the hindmost third of the body.

While it lacks eyes, the head has a pair of ciliated sensory organs approximately 140 μm back from the body's anterior end.

The intestine extends into the brain and connects with the reproductive system via a genito-intestinal duct.