endemic to a single state or province
Regularity: Regularly occurring
Type of Residency: Year-round
Global Range: Known only from a single spring system in Sunderland, Massachusetts (Smith, 1992).
Length: 0.9 cm
Differentiated from all other species of flatworm in Massachusetts by the several small eyes arranged tightly along teh anterior region of the body (Smith, 1992).
Comments: P. REMOTA requires spring habitats in which the water remains cool (8.5-9.0 degrees C) throughout the year (Smith, 1992).
Non-Migrant: No. All populations of this species make significant seasonal migrations.
Locally Migrant: No. No populations of this species make local extended movements (generally less than 200 km) at particular times of the year (e.g., to breeding or wintering grounds, to hibernation sites).
Locally Migrant: No. No populations of this species make annual migrations of over 200 km.
Life History and Behavior
Currently, it is believed that P. REMOTA reproduces exclusively by sexual methods involving cross fertilization and produces a cocoon containing several young worms (Smith, 1992).
National NatureServe Conservation Status
Rounded National Status Rank: NNR - Unranked
Relevance to Humans and Ecosystems
Comments: No known economic value.