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)
Stichopogon fragilis
Stichopogon fragilis
Stichopogon venturiensis
Stichopogon venturiensis
Stictochironomus devinctus
Stictochironomus devinctus
Stictomyia longicornis
Stictomyia longicornis
Stictomyia punctata
Stictomyia punctata
Stilobezzia antennalis
Stilobezzia antennalis
Stilobezzia beckae
Stilobezzia beckae
Stilobezzia lutea
Stilobezzia lutea
Stilt-legged Fly
Rainieria antennaepes
Stiphrosoma artum
Stiphrosoma artum
Stiphrosoma balteatum
Stiphrosoma balteatum
Stiphrosoma pectinatum
Stiphrosoma pectinatum
Stonemyia californica
Stonemyia californica
Stonemyia fera
Stonemyia fera
Stonemyia isabellina
Stonemyia isabellina
Stonemyia rasa
Stonemyia rasa
Stonemyia tranquilla
Stonemyia tranquilla
Stonemyia velutina
Stonemyia velutina
Stonyx clelia
Stonyx clelia
Stratiomys badia
Stratiomys badia
Stratiomys barbata
Stratiomys barbata
Stratiomys bruneri
Stratiomys bruneri
Stratiomys currani
Stratiomys currani
Stratiomys laticeps
Stratiomys laticeps
Stratiomys meigenii
Stratiomys meigenii
Stratiomys norma
Stratiomys norma
Stratiomys normula
Stratiomys normula
Stratiomys obesa
Stratiomys obesa
Strauzia intermedia
Strauzia intermedia
Streamside Sandpirate
Lasiopogon slossonae
Stripe-backed Goldenrobber
Callinicus vittatus
Stripe-backed Pixie
Leptogaster virgata
Stripe-backed Snailkiller
Limnia unguicornis
Striped Dung Fly
Oxysarcodexia varia
Striped Mosquito
Aedes notoscriptus
Strongygaster triangulifera
Strongygaster triangulifera
Strongylophthalmyia angustipennis
Strongylophthalmyia angustipennis
Stylogaster beresfordi
Stylogaster beresfordi
Stylogaster biannulata
Stylogaster biannulata
Stylogaster neglecta
Stylogaster neglecta
Subalpine Sandpirate
Lasiopogon aldrichii
Sugar Beet Root Maggot
Tetanops myopaeformis
Suillia nemorum
Suillia nemorum
Suillia plumata
Suillia plumata
Sumac Gall Pithead
Pipiza puella
Sun Fly
Helophilus pendulus
Suragina concinna
Suragina concinna
Swammerdamella bispinosa
Swammerdamella bispinosa
Swammerdamella marginata
Swammerdamella marginata
Swammerdamella obtusa
Swammerdamella obtusa
Swammerdamella pusilla
Swammerdamella pusilla
Swammerdamella pygmaea
Swammerdamella pygmaea
Swammerdamella sagittata
Swammerdamella sagittata
Sylvicola notialis
Sylvicola notialis
Sylvicola punctatus
Sylvicola punctatus
Symballophthalmus masoni
Symballophthalmus masoni
Symmerus lautus
Symmerus lautus
Symmerus vockerothi
Symmerus vockerothi
Symphoromyia cinerea
Symphoromyia cinerea
Symphoromyia hirta
Symphoromyia hirta
Symphoromyia pleuralis
Symphoromyia pleuralis
Symphoromyia sackeni
Symphoromyia sackeni
Symplecta pilipes
Symplecta pilipes
Sympycnus lineatus
Sympycnus lineatus
Synchysa tricincta
Synchysa tricincta
Syneches ater
Syneches ater
Syneches debilis
Syneches debilis
Syneches hyalinus
Syneches hyalinus
Syneches pusillus
Syneches pusillus
Syneches rufus
Syneches rufus
Syneches thoracicus
Syneches thoracicus
Synthesiomyia nudiseta
Synthesiomyia nudiseta
Syrphus attenuatus
Syrphus attenuatus
Syrphus knabi
Syrphus knabi
Syrphus rectus
Syrphus rectus
Systenus albimanus
Systenus albimanus
Systenus eucercus
Systenus eucercus
Systoechus candidulus
Systoechus candidulus
Systoechus oreas
Systoechus oreas
Systropus angulatus
Systropus angulatus
Systropus arizonicus
Systropus arizonicus
Systropus bicornis
Systropus bicornis
Systropus macer
Systropus macer
Tabanus abactor
Tabanus abactor
Tabanus aegrotus
Tabanus aegrotus
Tabanus aranti
Tabanus aranti
Tabanus caenosus
Tabanus caenosus
Tabanus cheliopterus
Tabanus cheliopterus
Tabanus conterminus
Tabanus conterminus
Tabanus cymatophorus
Tabanus cymatophorus
Tabanus dorsifer
Tabanus dorsifer
Tabanus eadsi
Tabanus eadsi
Tabanus eurycerus
Tabanus eurycerus
Tabanus fairchildi
Tabanus fairchildi
Tabanus fratellus
Tabanus fratellus
Tabanus fulvicallus
Tabanus fulvicallus
Tabanus fulvulus
Tabanus fulvulus
Tabanus fumipennis
Tabanus fumipennis
Tabanus fuscicostatus
Tabanus fuscicostatus
Tabanus fusconervosus
Tabanus fusconervosus