Range Description

The species is currently only known on the basis of confirmed records using molecular data from Lake Ohrid, Lake Prespa, Lake Skutari, Lake Dojran, Lake Pamvotis and Lake Vegoritis. However Albrecht et al. (2007) point out that due to the confusion in the literature, where these shells may have been regarded as a variety of D.polymorpha, it is under-recorded, and hence they believe that D.presbensis appears to be dominant in the west-central part of the Balkan Peninsula. Most records of D.polymorpha in the region will require review, as result of this work, to determine whether they are D.polymorpha, D.blanci or D.presbensis, as Albrecht et al. (2007) noted that no specimens collected from the Balkan lakes were confirmed as D.polymorpha, so in their view it is not found there.