9. Isohypsibius prosostomus Thulin, 1928

Minsk (1 lichen sample: 3 specimens + 1 exuvium); Baran (1 lichen sample: 2 specimens); Zhodino (1 moss sample: 1 specimen). Referred to as Isohypsibius sp. by Kiosya (2010). The species, new for Belarus, is cosmopolitan.