Material examined: 2 specimens, Russia, Irkutsk Province, East Sayany Mts., 1700 m asl, Arshan, Tunkin Valley, taiga, lichen from Larix sp., 11.08.2004; leg. D. Diduszko, 8 specimens, Russia, Irkutsk Province, northern part Olkhon Island on Lake Baikal, taiga, lichen from stone, near the coast, 05.08.2004; leg. D. Diduszko
Acknowledgments
This work was partially supported by a grant to the first and second author from the European Commission's programme 'Transnational Access to Major Research Infrastructures' to SYNTHESYS (grant no. DKTAF 1163).
We want to thanks to Professor Giovanni Pilato (Italy) for loaning us the type material of M. vanescens and two specimens of Echiniscus quadrispinosus. We are also grateful to Dr. Denis Tumanov (Russia) for the additional information on the morphology of M. alekseevi. Dr. Wojciech Magowski (Poland) made the microscope with phase contrast available to us.