Hygrotus artus is a species of beetle in the family Dytiscidae.

It is known to only occur in Inyo and Mono counties, California, United States.

Its common name is the Mono Lake diving beetle.

[1] It was previously thought to be extinct,[2] but recent work has shown that it is neither "extinct nor living in the alkaline Mono Lake.

This Dytiscidae-related article is a stub.