DistributionRead full entry
Range DescriptionThis species is known from confirmed records from the two southern European Lakes; Lake Trichonis and Lake Amvrakia. In addition, D.blanci also occurred sympatrically with D.presbensis in the two northern Lakes Pamvotis and Prespa. Albrecht et al. (2007) noted that it is possible that these maybe lone "migrant" specimens, as no juveniles were found in the surveys of the northern lakes, however, it may also be a factor related to the timing of collection of samples (Spring as opposed to Autumn). 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.blanci maybe dominant in the southern part of mainland Europe, in Greece.