Dimarcusidae is a family of triclads found mostly in freshwater habitats of caves, although at least one species, Rhodax evelinae, occurs in surface waters.[1][2] Currently the family contains only seven species distributed in five genera, although the total number of species is thought to be much higher.[3]
^Mitchell, Robert W.; Kawakatsu, Masaharu (1972). "A new family, genus, and species of cave-adapted Planarian from Mexico (Turbellaria, Tricladida, Maricola)". Occasional Papers, Museum of Texas Tech University. 8: 1–16.