Dugesia sagitta is a species of dugesiid triclad that inhabits the rivers of Corfu, Greece.

In 1984 D. sagitta was back from the synonymization thanks to the contribution of a more accurate morphological description done by de Vries.

[1] In 1861 Schmidt also described D. sagitta from Cephalonia, but de Vries demonstrated that it was actually D.

[1] The type locality of this species is Messonghi river, Corfu, Greece.

[1] This Dugesia species, from what only sexual reproducing specimens are known, have a karyotype of 2n=16, constituted only by acrocentric chromosomes.