Abascalaphus Tjeder & Hansson, 1992 (verified source for family)
Abbalomba Distant, 1908 (verified source for family)
Abdas Distant, 1916 (verified source for family)
Abidama Distant, 1907 (verified source for family)
Abrachia Kirby, 1889 (verified source for family)
Abrahameria Distant, 1920 (verified source for family)
Abranchioperla Illies, 1958 (verified source for family)
Abrhexosa Freeman, 1990 (verified source for family)
Abronius Needham, 1909 (verified source for family)
Abstrusomyzus Jensen & Stoetzel, 1999 (verified source for family)
Abyrsomele Dzhanokmen, 1975 (verified source for family)
Acacus Brunner in Brunner & Redtenbacher, 1907 (verified source for family)
Acaenotus Nagatomi & Yanagida in Nagatomi Liu & Yanagida, 1994 (verified source for family)
Acakandra Loomis, 1964 (verified source for family)
Acalleomyia Leicester, 1908 (verified source for family)
Acamptopoeum Cockerell, 1905 (verified source for family)
Acanonia Amyot & Serville, 1843 accepted as Acanalonia Spinola, 1839 (verified source for family)
Acanthacidiplosis Fedotova, 2003 (verified source for family)
Acanthacorydalis Weele, 1907 (verified source for family)
Acanthipeza Rondani, 1875 accepted as Adrama Walker, 1859 (verified source for family)
Acanthiulus Gervais, 1844 (verified source for family)
Acanthocerana Metcalf, 1945 (verified source for family)
Acanthochermes Kollar, 1848 (verified source for family)
Acanthocoryphus Karny, 1907 (verified source for family)
Acanthodactylus Tessin, 1890 accepted as Trichocerca Lamarck, 1801 (verified source for family)
Acanthodesmus Peters, 1864 (verified source for family)
Acanthodyta Sharp in Willey, 1898 (verified source for family)
Acanthoflata Fennah, 1947 (verified source for family)
Acanthogeophilus Minelli, 1981 (verified source for family)
Acantholespesia Wood, 1987 (verified source for family)
Acanthometriotes Hebard, 1924 (verified source for family)
Acanthomus Germar, 1848 (verified source for family)
Acanthophasma Chen & He, 2000 (verified source for family)
Acanthoscelio Ashmead, 1893 (verified source for family)
Acartomyia Theobald, 1903 (verified source for family)
Acaudella Nevsky, 1929 (verified source for family)
Acedanthidium Michener, 2000 (verified source for family)
Acentronus Chamberlin, 1943 accepted as Rhysodesmus Cook, 1896 (verified source for family)
Acerotella Masner, 1964 (verified source for family)
Aceroteta Kozlov & Masner, 1977 (verified source for family)
Acerovesiculomyia Fedotova, 2003 (verified source for family)
Achaebana Attie, Bourgoin & Bonfils, 2002 (verified source for family)
Achaetomus Coquillett, 1907 (verified source for family)
Achantholena Rondani, 1856 accepted as Norellia Robineau-Desvoidy, 1830 (verified source for family)
Acheron Lefebvre, 1842 (verified source for family)
Acherontides Bonet, 1945 (verified source for family)
Acheroxenylla Ellis, 1976 (verified source for family)
Achilophilus Attems, 1928 (verified source for family)
Achilorma Metcalf & Bruner, 1930 (verified source for family)
Achrioptera Coquerel, 1862 (verified source for family)
Acidacris Gerstaecker, 1888 (verified source for family)
Acidogona Loew, 1873 (verified source for family)
Acinotacris Rehn, 1914 (verified source for family)
Acisternum Silvestri, 1896 (verified source for family)
Acopauropus Cook, 1896 (verified source for family)
Acraspis Mayr, 1881 (verified source for family)
Acratoleon Banks, 1916 (verified source for family)
Acridophagus Evenhuis, 1983 (verified source for family)
Acroaspidia Compere & Zinna, 1955 (verified source for family)
Acrobelesia Cooper, 1983 † (verified source for family)
Acroberotha Krueger, 1922 (verified source for family)
Acrocara Scudder, 1890 (verified source for family)
Acrocholidia Kolenati, 1857 (verified source for family)
Acrochordonodes Bigot, 1878 accepted as Senogaster Macquart, 1834 (verified source for family)
Acrometopida Enderlein, 1929 (verified source for family)
Acrometopus Signoret, 1860 (verified source for family)
Acromyia Latreille, 1809 (verified source for family)
Acronioglenea Breuning, 1974 (verified source for family)
Acronneus Munro, 1939 (verified source for family)
Acrophaea Melichar, 1902 (verified source for family)
Acropogon Enderlein, 1933 (verified source for family)
Acroprivesa Schmidt, 1912 (verified source for family)
Acrotaeniacantha Hering, 1939 (verified source for family)
Actenella Enderlein, 1928 (verified source for family)
Actinophryno Townsend, 1928 (verified source for family)
Acuatella Mohrig, 2003 (verified source for family)
Aculocephala Metcalf, 1945 (verified source for family)
Acuminocythere Swain & Gilby, 1974 (verified source for family)
Acuphocera Townsend, 1926 (verified source for family)
Acutibaeus Meunier, 1916 † (verified source for family)
Acuticythereis Edwards, 1944 † (verified source for family)
Acutisha Medler, 1991 (verified source for family)
Aczelia Carrera, 1955 (verified source for family)
Adactynus Rafinesque, 1818 (verified source for family)
Adamsiana Penny, 1996 (verified source for family)
Adelidoria Metcalf, 1952 (verified source for family)
Adelphacarus Grandjean, 1952 (verified source for family)
Adelphohemerobius Oswald, 1994 (verified source for family)
Adelungella Brunner in Brunner & Redtenbacher, 1907 (verified source for family)
Adenissus Linnavuori, 1973 (verified source for family)
Adenomeropus Hoffman, 1966 (verified source for family)
Adenopilina Starobogatov & Moskalev, 1987 (verified source for family)
Adexia Melichar, 1901 (verified source for family)
Adisia Golovatch, 1994 (verified source for family)
Adisiella Golovatch, 1999 (verified source for family)
Adoceta Bourgeois, 1882 (verified source for family)
Adolendana Distant, 1917 (verified source for family)
Adolfia Rehn, 1914 (verified source for family)
Adontodesmus Silvestri, 1897 (verified source for family)
Adshardicus Golovatch, 1981 (verified source for family)