Two new species of freshwater planarian from Hainan Island and Leizhou Peninsula, southern China (Platyhelminthes, Tricladida, Dugesiidae).

ABSTRACT: Two new species of the genus Dugesia from Hainan Island and Leizhou Peninsula are described by applying an integrative approach, including morphological, karyological, histological, and molecular information. In the molecular phylogenetic tree, the two new species, Dugesiasaccata Chen & Dong, sp. nov. and Dugesiaaconcinna Chen & Dong, sp. nov., fall into an Eastern Palearctic/Oriental clade and an Oriental/Australasian clade, respectively, while sharing only a rather distant relationship. The separate specific status of the two new species is supported also by their genetic distances. Dugesiasaccata is characterised by the presence of the following features: a sac-shaped expansion at the knee-shaped bend of the bursal canal; ventrally displaced eja

SUBMITTER: Wang L 

PROVIDER: S-EPMC11979614 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature