The cosmopolitan family Sierolomorphidae has about 12 identified species found in Tropical Northern Hemisphere America and Asia. Little is known about their biology, except that most are ectoparasitic as larvae. The adults are black or brown, and all known species are solitary ectoparasitoids of other insects.
The new member of this group was found in Uzbekistan. Its name originates from the ancient Sogdiana in Central Asia, with reference to the type locality.
For the experts: Sierolomorpha sogdiana Lelej & Mokrousov, spec. nov. is described and illustrated from Central Asia (Uzbekistan). A key to the Palaearctic species of Sierolomorpha and a World catalogue of the family Sierolomorphidae (13 species in three genera) are given.