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)
Texas Hanging Thief
Diogmites texanus
Texas Prospector
Ablautus rufotibialis
Thalassomya bureni
Thalassomya bureni
Thambemyia borealis
Thambemyia borealis
Thaumatomyia annulata
Thaumatomyia annulata
Thaumatomyia apache
Thaumatomyia apache
Thaumatomyia glabra
Thaumatomyia glabra
Thaumatomyia grata
Thaumatomyia grata
Thaumatomyia pulla
Thaumatomyia pulla
Thaumatomyia pullipes
Thaumatomyia pullipes
Thaumatomyia rubida
Thaumatomyia rubida
Thecophora propinqua
Thecophora propinqua
Thelaira americana
Thelaira americana
Thelairodoria setinervis
Thelairodoria setinervis
Themira annulipes
Themira annulipes
Themira lohmanus
Themira lohmanus
Themira nigricornis
Themira nigricornis
Thereva bakeri
Thereva bakeri
Thereva brunnea
Thereva brunnea
Thereva comata
Thereva comata
Thereva cordata
Thereva cordata
Thereva diversa
Thereva diversa
Thereva flavipilosa
Thereva flavipilosa
Thereva frontalis
Thereva frontalis
Thereva fucata
Thereva fucata
Thereva hirticeps
Thereva hirticeps
Thereva smithae
Thereva smithae
Thevenetimyia californica
Thevenetimyia californica
Thevenetimyia canuta
Thevenetimyia canuta
Thevenetimyia funesta
Thevenetimyia funesta
Thevenetimyia harrisi
Thevenetimyia harrisi
Thevenetimyia lotus
Thevenetimyia lotus
Thevenetimyia luctifera
Thevenetimyia luctifera
Thevenetimyia magna
Thevenetimyia magna
Thevenetimyia nigra
Thevenetimyia nigra
Thevenetimyia notata
Thevenetimyia notata
Thevenetimyia phalantha
Thevenetimyia phalantha
Thevenetimyia speciosa
Thevenetimyia speciosa
Thick-headed Fly
Physocephala tibialis
Thienemannimyia barberi
Thienemannimyia barberi
Thin-legged Pixie
Apachekolos tenuipes
Thinophilus prasinus
Thinophilus prasinus
Thoracochaeta arnaudi
Thoracochaeta arnaudi
Thoracochaeta brachystoma
Thoracochaeta brachystoma
Thoracochaeta johnsoni
Thoracochaeta johnsoni
Thoracochaeta seticosta
Thoracochaeta seticosta
Thoracochaeta zosterae
Thoracochaeta zosterae
Thorny Hammertail
Efferia tuberculata
Thricops rufisquamus
Thricops rufisquamus
Thrypticus nigripes
Thrypticus nigripes
Thrypticus violaceus
Thrypticus violaceus
Thrypticus willistoni
Thrypticus willistoni
Thyridanthrax andrewsi
Thyridanthrax andrewsi
Thyridanthrax atratus
Thyridanthrax atratus
Thyridanthrax fenestratoides
Thyridanthrax fenestratoides
Thyridanthrax luminis
Thyridanthrax luminis
Thyridanthrax nugator
Thyridanthrax nugator
Thyridanthrax pallidus
Thyridanthrax pallidus
Thyridanthrax selene
Thyridanthrax selene
Tiger Bee Fly
Xenox tigrinus
Tiger Fly
Coenosia humilis
Tipula aprilina
Tipula aprilina
Tipula atrisumma
Tipula atrisumma
Tipula bicornis
Tipula bicornis
Tipula borealis
Tipula borealis
Tipula cahuilla
Tipula cahuilla
Tipula californica
Tipula californica
Tipula carinifrons
Tipula carinifrons
Tipula chlorion
Tipula chlorion
Tipula colei
Tipula colei
Tipula dietziana
Tipula dietziana
Tipula disjuncta
Tipula disjuncta
Tipula doaneiana
Tipula doaneiana
Tipula dorsimacula
Tipula dorsimacula
Tipula duplex
Tipula duplex
Tipula eluta
Tipula eluta
Tipula flavoumbrosa
Tipula flavoumbrosa
Tipula fragilis
Tipula fragilis
Tipula fragmentata
Tipula fragmentata
Tipula grahamina
Tipula grahamina
Tipula hermannia
Tipula hermannia
Tipula hirsuta
Tipula hirsuta
Tipula ignobilis
Tipula ignobilis
Tipula jacintoensis
Tipula jacintoensis
Tipula jacobus
Tipula jacobus
Tipula lanei
Tipula lanei
Tipula longiventris
Tipula longiventris
Tipula lygropis
Tipula lygropis
Tipula megaura
Tipula megaura
Tipula monticola
Tipula monticola
Tipula morrisoni
Tipula morrisoni
Tipula noveboracensis
Tipula noveboracensis
Tipula oropezoides
Tipula oropezoides
Tipula pachyrhinoides
Tipula pachyrhinoides
Tipula pacifica
Tipula pacifica
Tipula paterifera
Tipula paterifera
Tipula penobscot
Tipula penobscot
Tipula praecisa
Tipula praecisa
Tipula rossmani
Tipula rossmani
Tipula sackeniana
Tipula sackeniana