1. Malacological Section, Senckenberg Research Institute and Natural History Museum Frankfurt/M, Senckenberganlage 25, Frankfurt am Main, Germany
2. Natural History Museum of Denmark (Zoology), Copenhagen OE, Denmark
3. N. Laverov Federal Center for Integrated Arctic Research of the Ural Branch of the Russian Academy of Sciences, Arkhangelsk, Russia
4. Northern Arctic Federal University, Arkhangelsk, Russia