Acartophthalmidae (acartophthalmid flies)
(5)Acroceridae (small-headed flies)
(451)Agromyzidae (leafminer flies)
(3,355)Anisopodidae (wood gnats)
(253)Ansorgiidae (1)Antefungivoridae (44)Anthomyiidae (anthomyiid flies)
(1,958) (1)Anthomyzidae (anthomyzid flies)
(167)Apioceridae (flower-loving flies)
(154)Apsilocephalidae (14)Apystomyiidae (2)Archisargidae (61)Archizelmiridae (8)Asilidae (robber flies)
(7,527)Asiochaoboridae (4)Asteiidae (cryptochelid flies)
(153)Atelestidae (24)Athericidae (Fly)
(155)Atlestidae (1)Aulacigastridae (aulacigastrid flies)
(61)Australimyzidae (9)Austroleptidae (11)Axymyiidae (Gnat)
(17)Bibionidae (harlequin flies and march flies)
(258)Biblionidae (1)Blephariceridae (net-winged midges)
(369) (1)Boholdoyidae (3)Bolbomyiidae (5)Bolitophilidae (68)Bombyliidae (bee flies)
(4,680)Brachystomatidae (40)Braulidae (bee lice)
(7)Calliphoridae (blow flies, bluebottles, cluster flies, and greenbottles)
(1,215) (1)Camillidae (camillid flies)
(43)Canacidae (341)Canthyloscelididae (19)Carnidae (Crane fly)
(134)Cecidomyiidae (gall gnats and gall midges)
(6,588)Celyphidae (Beetle fly)
(112)Ceratopogonidae (biting midges, no-see-ums, and punkies)
(6,252)Certopogonidae (1)Chamaemyiidae (aphid flies and small dung flies)
(364)Chaoboridae (phanton midges)
(101)Chimeromyiidae (10)Chironomidae (midges)
(7,038)Chloropidae (chloropid flies)
(3,161)Chyromyidae (chiromyid flies)
(147)Circumphallidae (1)Clusiidae (clusiid flies)
(561)Clusiomitidae (7)Coelopidae (kelp flies and seaweed flies)
(33)Conopidae (thick-headed flies)
(880)Corethrellidae (134)Cratomyiidae (1)Crosaphididae (2)Cryptochetidae (cryptochetid flies)
(48)Ctenostylidae (13)Culicidae (mosquitoes)
(3,283) (4)Curtonotidae (curtonotid flies)
(106)Cylindrotomidae (90)Cypselosomatidae (Fly)
(42)Cypselostomatidae (1)Deuterophlebiidae (mountain midges)
(19)Diadocidiidae (48)Diastatidae (diastatid flies)
(54)Dictyodipteridae (1)Diopsidae (stalk-eyed flies)
(229)Ditomyiidae (107)Dixidae (dixid midges)
(226)Dolichopodidae (longlegged flies)
(8,030) (1)Drosdophilidae (245)Drosophilidae (pomace flies, small fruit flies, and vinegar flies)
(2,404)Dryomyzidae (dryomyzid flies)
(29)Elliidae (4)Empididae (balloon flies and dance flies)
(2,923)Eoditomyiidae (1)Eomyiidae (1)Eophlebomyiidae (1)Eopolyneuridae (2)Eostratiomyiidae (2)Ephydridae (brine flies and shore flies)
(2,207)Eremochaetidae (19)Eucaudomyiidae (1)Eurygnathomyiidae (1)Evocoidae (1)Fanniidae (429)Fergusoninidae (Fly)
(42)Glossinidae (Tsetse fly)
(27)Gobryidae (5)Grauvogeliidae (4)Helcomyzidae (Helcomyzid fly)
(14)Heleomyzidae (heleomyzid flies)
(802)Helosciomyzidae (32)Hennigmatidae (4)Hesperinidae (13)Heterorhyphidae (1)Heterostomidae (5)Hilarimorphidae (hilarimorphid flies)
(37)Hippoboscidae (keds and louse flies)
(815)Hoffeinsmyiidae (1)Homalocnemidae (7)Hongocaloneuridae (1)Huttoninidae (8)Hybotidae (1,636)Hyperpolyneuridae (1)Inbiomyiidae (12)Ironomyiidae (Fly)
(23)Iteaphilidae (6)Kaluginamyiidae (2)Keroplatidae (1,092)Kovalevisargidae (6)Kuperwoodiidae (2)Lauxaniidae (beach flies and lauxaniid flies)
(1,305)Limoniidae (11,747)Lonchaeidae (lanceflies and lonchaeid flies)
(597)Lonchopteridae (spear-winged flies)
(76)Lonchopteroidea (1)Luanpingitidae (1)Marginidae (2)Megamerinidae (Fly)
(16)Mesembrinellidae (63)Mesophantasmatidae (1)Mesosciophilidae (38)Micropezidae (stilt-legged flies)
(726)Milichiidae (milichiid flies)
(355)Mormotomyiidae (Fly)
(1)Muscidae (face flies, horn flies, house flies, muscid flies, stable flies, and tsetse flies)
(6,076) (1)Mycetophilidae (fungus gnats)
(4,928) (1)Mycetophiloidae (1)Mydidae (mydas flies)
(517)Mystacinobiidae (Fly)
(1)Mysteromyiidae (1)Mythicomyiidae (449)Nadipteridae (4)Nannodastiidae (6)Natalimyzidae (1)Nemestrinidae (tangle-veined flies)
(311)Neminidae (14)Neriidae (cactus flies)
(134)Neurochaetidae (Fly)
(22)Nothybidae (Fly)
(12)Nymphomyiidae (nymphomyiid crane flies and nymphomyiid flies)
(11)Odiniidae (odiniid flies)
(83)Oestridae (bot flies and warble flies)
(172)Opetiidae (12)Opomyzidae (Opomyzid fly)
(42)Oreogetonidae (37)Oreoleptidae (1)Orientisargidae (1)Pachyneuridae (pachyneurid gnats)
(8)Palaeophoridae (1)Palaeostratiomyiidae (1)Pallopteridae (pallopterid flies)
(83)Pantophthalmidae (Fly)
(21)Paraleucopidae (22)Paraxymyiidae (12)Pediciidae (518)Periscelididae (periscelidid flies)
(145)Perissommatidae (Gnat)
(17)Phaeomyiidae (4)Phoridae (humpbacked flies)
(4,788) (2)Piophilidae (cheese skippers and skipper flies)
(100)Pipunculidae (big-headed flies)
(1,554)Platypezidae (flat-footed flies)
(298)Platystomatidae (picture-winged flies)
(1,227)Pleciofungivoridae (73)Polleniidae (173)Procramptonomyiidae (10)Proneottiophilidae (1)Prosechamyiidae (2)Protapioceridae (4)Protempididae (2)Protendipedidae (4)Protobrachyceridae (3)Protomphralidae (2)Protopleciidae (52)Protorhyphidae (17)Protoscatopsidae (2)Psilidae (rust flies)
(367)Psychodidae (moth flies and sand flies)
(3,377) (1)Ptychopteridae (phantom crane flies)
(191)Pyrgotidae (pyrgotid flies)
(382)Ragadidae (51)Rangomaramidae (39)Rhagionemestriidae (13)Rhagionempididae (9)Rhagionidae (snipe flies)
(678)Rhiniidae (387)Rhinophoridae (woodlouse flies)
(193)Richardiidae (Richardiid fly)
(187)Ropalomeridae (ropalomerid flies)
(37)Sarcophagidae (flesh flies)
(3,048)Scathophagidae (447)Scatopsidae (hyperoscelidid gnats and minute black scavenger flies)
(453)Scenopinidae (windoe flies and window flies)
(439)Sciaridae (dark-winged fungus gnats and root gnats)
(2,959)Sciomyzidae (marsh flies)
(508)Sepsidae (black scavenger flies)
(382)Siberhyphidae (1)Simuliidae (black flies and buffalo gnats)
(2,476)Somatiidae (7)Sphaeroceridae (Small dung fly)
(1,955)Sphaerroceridae (5)Stenomicridae (3)Strashilidae (3)Stratiomyidae (soldier flies)
(2,961) (2)Strongylophthalmyiidae (88)Syringogastridae (Fly)
(25)Syrphidae (flower flies and syrphid flies)
(6,777) (141)Tabanidae (deer flies)
(4,705)Tachinidae (tachinid flies)
(9,831)Tachiniscidae (4)Tanyderidae (primitive crane flies)
(80)Tanyderophrynidae (1)Tanypezidae (tanypezid flies)
(24)Tephritidae (fruit flies)
(5,287) (2)Teratomyzidae (Fly)
(24)Tethepomyiidae (4)Thaumaleidae (solitary midges)
(208)Therevidae (stiletto flies)
(1,298)Tillyardipteridae (2)Tipulariae (1)Tipulidae (4,574)Tipulodictyidae (2)Tipulopleciidae (1)Trichoceridae (winter crane flies)
(288)Ulidiidae (685)Ulurumyiidae (1)Valeseguyidae (3)Vermileonidae (73)Vladipteridae (4)Vosilidae (1)Xenasteiidae (13)Xylomyidae (xylomyid flies)
(158)Xylophagidae (xylophagid flies)
(148)Yantaromyiidae (1)Zhangsolvidae (11)