The taxonomy of genus Paramyia Williston is revised for the Nearctic region north of Mexico, including the description (morphological and molecular) and illustration of 10 new species and re-description of Paramyia nitens. Morphological keys to the species of males and females are provided. The following new species are described: Paramyia anguliloba sp. n., P. brevikeraia sp. n., P. incrassatoloba sp. n., P. nigritarsi sp. n., P. lustrum sp. n., P. lutea sp. n., P. pseudonitens sp. n., P. silvestris sp. n., P. rectiloba sp. n., P. wheeleri sp. n.. Paramyia hungarica is also discussed in relation to the Nearctic species.
Keywords: Diptera, taxonomy, Paramyia, Diptera, Milichiidae, Nearctic, DNA barcoding.