Flies
Order Diptera
The Flies (Order Diptera) includes 6,350 species across 141 families and 1,800 genera in our directory.
About Flies
Diptera includes over 150,000 described species of flies, mosquitoes, and midges. Mosquitoes are the deadliest animal on Earth (CDC). Malaria alone causes ~249 million cases and over 608,000 deaths annually, mostly children under 5 (WHO). Vector-borne diseases account for over 17% of all infectious diseases, causing 700,000+ deaths per year.
Economic Impact
In the U.S., vector-borne disease cases tripled between 2004-2016, with over 640,000 cases reported in that period (CDC). Tickborne diseases doubled from 22,000 to 48,000 annual reports. Globally, mosquito-borne diseases cost billions in healthcare and lost productivity.
Ecological Role
Despite their disease impact, flies are critical decomposers and pollinators. Hoverflies alone pollinate hundreds of crop and wildflower species. Flies are also the primary food source for many birds, bats, and fish. Forensic entomology relies heavily on fly species for crime scene analysis.
Families in Diptera (141)
Species in Diptera (6,350)
Gray-backed Goggle Eye
Haplopogon dicksoni
Gray-sided Twigsitter
Holopogon guttulus
Great Mesquite Hammertail
Efferia grandis
Great Plains Hammertail
Efferia bicaudata
Great Plains Sandpirate
Lasiopogon quadrivittatus
Great-nosed Pond Fly
Sericomyia tolli
Green Horse Fly
Chlorotabanus crepuscularis
Green and Black Soldier Fly
Psellidotus hieroglyphicus
Green-eyed Lion Fly
Amblyonychus trapezoidalis
Grossoseta pacifica
Grossoseta pacifica
Gulf Dunerobber
Laphystia texensis
Guttipelopia guttipennis
Guttipelopia guttipennis
Gymnocarena bicolor
Gymnocarena bicolor
Gymnocarena defoei
Gymnocarena defoei
Gymnocarena diffusa
Gymnocarena diffusa
Gymnocarena norrbomi
Gymnocarena norrbomi
Gymnocarena tricolor
Gymnocarena tricolor
Gymnocheta ruficornis
Gymnocheta ruficornis
Gymnoclytia unicolor
Gymnoclytia unicolor
Gymnophora luteiventris
Gymnophora luteiventris
Gymnopternus annulatus
Gymnopternus annulatus
Gymnopternus barbatulus
Gymnopternus barbatulus
Gymnopternus currani
Gymnopternus currani
Gymnopternus debilis
Gymnopternus debilis
Gymnopternus difficilis
Gymnopternus difficilis
Gymnopternus flavus
Gymnopternus flavus
Gymnopternus laevigatus
Gymnopternus laevigatus
Gymnopternus maculiventris
Gymnopternus maculiventris
Gymnopternus pseudodebilis
Gymnopternus pseudodebilis
Gymnopternus vernaculus
Gymnopternus vernaculus
Gymnopternus vockerothi
Gymnopternus vockerothi
Gymnosoma canadense
Gymnosoma canadense
Gymnosoma occidentale
Gymnosoma occidentale
Haag's Bromeliad Fly
Copestylum haagii
Hackberry Aciculate Gall Midge
Celticecis aciculata
Hackberry Acorn Gall Midge
Celticecis celtiphyllia
Hackberry Aggregate Gall Midge
Celticecis connata
Hackberry Awl-shaped Gall Midge
Celticecis subulata
Hackberry Columnar Stem Gall Midge
Celticecis ramicola
Hackberry Globular Leaf Gall Midge
Celticecis globosa
Hackberry Horn Gall Midge
Celticecis cornuata
Hackberry Narrow-tipped Gall Midge
Celticecis acuminata
Hackberry Pear-shaped Gall Midge
Celticecis pyriformis
Hackberry Rosette Gall Midge
Celticecis capsularis
Hackberry Spherical Stem Gall Midge
Celticecis oviformis
Hackberry Tenpin Gall Midge
Celticecis ovata
Hadromyia aepalius
Hadromyia aepalius
Hadromyia aldrichi
Hadromyia aldrichi
Hadromyia crawfordi
Hadromyia crawfordi
Hadromyia grandis
Hadromyia grandis
Hadromyia pulchra
Hadromyia pulchra
Haematopota americana
Haematopota americana
Hairy-footed Pixie
Apachekolos scapularis
Halcyon
Pyritis kincaidii
Hamatabanus floridensis
Hamatabanus floridensis
Hammerschmidtia rufa
Hammerschmidtia rufa
Hammerschmidtia sedmani
Hammerschmidtia sedmani
Haplopeodes loprestii
Haplopeodes loprestii
Haplopeodes minutus
Haplopeodes minutus
Hawthorn Fly
Bibio marci
Hebecnema umbratica
Hebecnema umbratica
Hebecnema vespertina
Hebecnema vespertina
Hecamede albicans
Hecamede albicans
Hedriodiscus binotatus
Hedriodiscus binotatus
Hedriodiscus leucogaster
Hedriodiscus leucogaster
Hedriodiscus trivittatus
Hedriodiscus trivittatus
Hedriodiscus truquii
Hedriodiscus truquii
Hedriodiscus varipes
Hedriodiscus varipes
Hedriodiscus vertebratus
Hedriodiscus vertebratus
Heleomyza captiosa
Heleomyza captiosa
Helina abdominalis
Helina abdominalis
Helina abiens
Helina abiens
Helina pectinata
Helina pectinata
Helina procedens
Helina procedens
Helophilus bottnicus
Helophilus bottnicus
Helophilus groenlandicus
Helophilus groenlandicus
Helophilus lapponicus
Helophilus lapponicus
Helophilus latifrons
Helophilus latifrons
Helophilus obscurus
Helophilus obscurus
Hemipenthes albus
Hemipenthes albus
Hemipenthes blanchardiana
Hemipenthes blanchardiana
Hemipenthes catulina
Hemipenthes catulina
Hemipenthes celeris
Hemipenthes celeris
Hemipenthes curta
Hemipenthes curta
Hemipenthes edwardsii
Hemipenthes edwardsii
Hemipenthes jaennickeana
Hemipenthes jaennickeana
Hemipenthes lepidota
Hemipenthes lepidota
Hemipenthes pullata
Hemipenthes pullata
Hemipenthes seminigra
Hemipenthes seminigra
Hemisturmia scissilis
Hemisturmia scissilis
Hemyda aurata
Hemyda aurata
Henicomyia hubbardii
Henicomyia hubbardii
Herina narytia
Herina narytia
Herina ruficeps
Herina ruficeps
Heringia canadensis
Heringia canadensis
Heringia salax
Heringia salax
Hermetia chrysopila
Hermetia chrysopila
Hermetia concinna
Hermetia concinna
Hermetia hunteri
Hermetia hunteri
Hermetia melanderi
Hermetia melanderi