Two new species of the genus Timia (Diptera: Ulidiidae) with a key to species with microtrichose black scutellum.

Two new species of Timia are described and figured. Timia (Empyelocera) altaica Galinskaya sp. nov. from Altai (Russia), Timia (Empyelocera) mokhnata Galinskaya sp. nov. from Eastern Pamir (Tajikistan) and T. (E.) nigrimana (Loew, 1866) differ from all other species of Timia in having scutellum flattened superiorly, microtrichose only superiorly; anepisternum shining along the whole surface, without microtrichosity; wing entirely transparent, without spots. Timia (Empyelocera) altaica Galinskaya sp. nov. differs from both of them by the posteroapical extension of cell bcu short, 0.8 times as long as transverse section of vein Cu. Timia (Empyelocera) mokhnata Galinskaya sp. nov. is similar to T. (E.) nigrimana (Loew, 1866) in having posteroapical extension of cell bcu long, more than 2 times as long as transverse section of vein Cu; the new species differs by the frons, scutum and pleura with long (about 0.6-0.8 times as long as setae) hairs; the orbit of frons with whitish microtrichose triangular spot at its anterior margin. A key to the five species with black microtrichose scutellum, descriptions and illustrations are provided.