Brachychaeta Róndani, 1861 Brachychaetoides Mesnil, 1970 Brachycnephalia Townsend, 1927 Brachymasicera Townsend, 1911 Brachymera Brauer & von Bergenstamm, 1889 Bracteola Richter, 1972 Brasilomyia Özdikmen, 2010 Brullaea Robineau-Desvoidy, 1863 Buquetia Robineau-Desvoidy, 1847
C thumb|Cylindromyia brassicaria
Cadurcia Villeneuve, 1926 Cadurciella Villeneuve, 1927 Caeniopsis Townsend, 1927 Caenisomopsis Townsend, 1934 Cahenia Verbeke, 1960 Calcager Hutton, 1901 Calcageria Curran, 1927 Calliethilla Shima, 1979 Callotroxis Aldrich, 1929 Calocarcelia Townsend, 1927 Calodexia van der Wulp, 1891 Calohystricia Townsend, 1931 Calolydella Townsend, 1927 Calosia Malloch, 1938 Calotachina Malloch, 1938 Calozenillia Townsend, 1927 Caltagironea Cortés & Campos, 1974 Calyptromyia Villeneuve, 1915 Camarona van der Wulp, 1891 Camposiana Townsend, 1915 Camposodes Cortés, 1967 Camptophryno Townsend, 1927 Campylia Malloch, 1938 Campylocheta Róndani, 1859 Cantrellius Barraclough, 1992 Carbonilla Mesnil, 1974 Carcelia Robineau-Desvoidy, 1830 Carceliella Baranov, 1934 Carcelimyia Mesnil, 1944 Carcelina Mesnil, 1944 Carceliocephala Townsend, 1934 Carceliodoria Townsend, 1928 Carmodymyia Thompson, 1968 Casahuiria Townsend, 1919 Catagonia Brauer & von Bergenstamm, 1891 Catajurinia Townsend, 1927