The Stegana shirozui species group (Diptera,Drosophilidae) from East Asia

One subgroup of the Stegana (Steganina) coleoptrata species group is elevated as a species group (i.e., the shirozui species group), so as to include the three known species, S. ctenaria Nishiharu, S. (S.) masanoritodai Okada and Sidorenko and S. (S.) shirozui Okada, as well nine new species reported from China and Japan: S. (S.) jiajinshanensis, S. (S.) jianfenglingensis, S. (S.) maoershanensis, S. (S.) multidentata, S. (S.) qinlingensis, S. (S.) saigusai, S. (S.) shennongi, S. (S.) wuyishanensis and S. (S.) xanthosticta spp. nov. A key to all the species of this group is provided.