A new genus and species Medvedevia glebigen. et sp. n. of the tribe Blaptini is described from eastern Nuristan, Afghanistan. The new genus belongs to the subtribe Blaptina. It is closely related to the genus Blaps Fabricius, 1775, which is evidenced by its body shape, structure of tarsomeres, and presence of the mucron. Medvedeviagen. n. differs from all Blaptini in the following characters: very wide mentum concealing the base of the labium and maxillae; not beaded pronotum; very wide processes of the mesoventrite and of abdominal ventrite 1; unusual structure of the aedeagus (basal piece is weakly C-curved, parameres are deeply cleft). New synonymy is established: subtribe Blaptina Leach, 1815 = Dilina Ren in Ren et al., 2016, syn. n.