A Good Sample to Concurrent Fauna: Study on Aquatic Coleoptera Fauna (Adephaga and Polyphaga) of Lake Van Basin (Turkey), with some Zoogeographic Remarks
A brief zoogeographic analysis of the aquatic and semi aquatic Coleoptera fauna of Lake Van Basin (East Anatolia) based on the distribution of 194 species/subspecies belong to ten families in basin shows the existence of three major faunas, one influenced European-Siberian region, the others by the Eremia and Mediterranean. Species from different zoogeographical units are determined and listed. Totally, in research area, it is found out that 111 species find in every three zoogeographic region. Rhantus frontalis (Dytiscidae), Helophorus occidentalis and H. yammounensis (Helophoridae) are newly recorded from Turkey. Turkey is southern limit of Ochthebius costatellus, and eastern limit of Hygrobia hermanni ranges.
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