FIGURE 4. Coenosia spp. A–D. Coenosia nevaedensis. A. Male habitus, lateral view. B. Female habitus, lateral view. C. Female abdomen, dorsal view. D. Female scutum, dorsal view. E–H. Coenosia octosignata. E. Female scutum, dorsal view. F. Female abdomen, dorsal view. G. Male habitus, lateral view. H. Female habitus, lateral view. I in A key to the Russian species of the genus Coenosia Meigen (Diptera, Muscidae), with the description of one new species and new synonymies