Bactromyia Brauer & von Bergenstamm, 1891 Bactromyiella Mesnil, 1952 Bahrettinia Özdikmen, 2007 Balde Rice, 2005 Bampura Tschorsnig, 1983 Barychaeta Bezzi, 1906 Bathydexia van der Wulp, 1891 Baumhaueria Meigen, 1838 Belida Robineau-Desvoidy, 1863 Bellina Robineau-Desvoidy, 1863 Belvosia Robineau-Desvoidy, 1830 Belvosiella Curran, 1934 Belvosiomimops Townsend, 1935 Beskia Brauer & von Bergenstamm, 1889 Beskiocephala Townsend, 1916 Beskioleskia Townsend, 1919 Bessa Robineau-Desvoidy, 1863 Besseria Robineau-Desvoidy, 1830 Bezziomyiobia Baranov, 1938 Bibiomima Brauer & von Bergenstamm, 1889 Billaea Robineau-Desvoidy, 1830 Binghamimyia Townsend, 1919 Biomeigenia Mesnil, 1961 Bischofimyia Townsend, 1927 Bithia Robineau-Desvoidy, 1863 Blepharella Macquart, 1851 Blepharellina Mesnil, 1952 Blephariatacta Townsend, 1931 Blepharipa Róndani, 1856 Blepharomyia Brauer & von Bergenstamm, 1889 Blepharopoda Róndani, 1850 Blondelia Robineau-Desvoidy, 1830 Bogosia Róndani, 1873 Bolbochaeta Bigot, 1885 Bolohoughia Townsend, 1927 Bombyliomyia Brauer & von Bergenstamm, 1889 Borgmeiermyia Townsend, 1935 Bothria Róndani, 1856 Bothrophora Schiner, 1868 Botriopsis Townsend, 1928 Bourquinia Blanchard, 1935 Brachelia Robineau-Desvoidy, 1830 Bracheliopsis van Emden, 1960 Brachybelvosia Townsend, 1927