Helobdella papillata

External morphology

Dorsum with 3-9 mostly complete longitudinal rows of papillae, papillae larger than width of annulus, dorsal white spots irregular, three rows of papillae restricted to the posterior third of dorsum

Internal morphology

6 crop caeca

Habitat & range

Habitat

Freshwater

Region

North America

Recorded from

USA, Canada

Biology

Virginia

Taxonomic notes

Considered the North American H. triserialis, though the Palo Alto species was split to be H. farmeri