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Themira nigricornis
black scavenger fly
Themira nigricornis is a species of black scavenger fly in the family Sepsidae, first described by Meigen in 1826. It is native to Europe with records across western, central, eastern, and northern regions, and has been introduced to the Nearctic region including the United States. The species was first documented in south-eastern Europe in 2014 from an urban site in Bucharest, Romania, representing the southernmost European location for the species. Adults are necrophagous and have been observed on decomposing animal carcasses.