Resurrection and redescription of Clepsinepallida Verrill, 1872 (Hirudinida, Glossiphoniidae) with a phylogeny of the genus Alboglossiphonia .

Alboglossiphoniapallida (Verrill, 1872) comb. nov. is resurrected and redescribed based on morphological and molecular data from specimens of the type locality (New Haven County, Connecticut, USA) that demonstrate it is distinct from North American Alboglossiphoniaheteroclita , European Alboglossiphoniaheteroclita , and Alboglossiphoniapapillosa . Alboglossiphoniapallida is characterized by having dark chromatophores on the dorsal surface arranged lateral to patrilaterally and medially as a thin line or interrupted thin line along with three pairs of eye spots (with the first pair closest together), six pairs of crop ceca, and a united gonopore. Additional sampling of specimens of the genus Alboglossiphonia is needed to understand its phylogeny especially as many species have not been collected since their description.