An annotated checklist of the Muscidae (Diptera) of Chukotka (Russia), with new records

An annotated checklist is given of the species of Muscidae (Diptera) of the Chukotka Autonomous Okrug, including 153 species in 22 genera; 57 species are newly recorded from this territory. Twelve species are newly recorded for the Palaearctic region [Drymeia cantabrigensis Huckett 1965, Phaonia tenebriona Huckett, 1965, Mydaea otiosa Stein, 1920, Spilogona arcticola Huckett, 1965, S. hurdiana Huckett, 1965, S. incauta (Huckett, 1932), S. murina Huckett, 1965, S. nigerrima Huckett, 1965, S. padlei Huckett, 1965, S. pulvicrura (Huckett, 1932), S. turbidipennis Huckett, 1965, Coenosia morrisoni (Malloch, 1924)]. Coenosia atritibia Ringdahl, 1926 is newly recorded from Russia. The species list includes all regional references to each species, the material examined, the distribution, images of selected species and additional remarks where appropriate.