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)
Sobarocephala flaviseta
Sobarocephala flaviseta
Sobarocephala interrupta
Sobarocephala interrupta
Sobarocephala latifacies
Sobarocephala latifacies
Sobarocephala latifrons
Sobarocephala latifrons
Sobarocephala setipes
Sobarocephala setipes
Soldier Fly
Cephalochrysa nigricornis
Soldier Fly
Ptecticus trivittatus
Soldier Fly
Stratiomys maculosa
Solieria flava
Solieria flava
Solva crepuscula
Solva crepuscula
Somula decora
Somula decora
Somula mississippiensis
Somula mississippiensis
Sonora Hanging Thief
Blepharepium sonorensis
Sooty Crane Fly
Tipula fuliginosa
Sourbush Seed Fly
Acinia picturata
Southeastern Sandpirate
Lasiopogon schizopygus
Southern Californian Species
Brachypalpus undescribed-b
Southern Pixie
Leptopteromyia americana
Southwestern Laphria
Laphria engelhardti
Southwestern Longhorn Robber
Dioctria vera
Soybean Nodule Fly
Rivellia quadrifasciata
Spallanzania finitima
Spallanzania finitima
Spaziphora cincta
Spaziphora cincta
Speccafrons mallochi
Speccafrons mallochi
Spelobia bifrons
Spelobia bifrons
Spelobia maculipennis
Spelobia maculipennis
Spelobia typhlops
Spelobia typhlops
Sphaeromias longipennis
Sphaeromias longipennis
Sphaerophoria philanthus
Sphaerophoria philanthus
Sphaerophoria pyrrhina
Sphaerophoria pyrrhina
Sphecomyia brevicornis
Sphecomyia brevicornis
Sphecomyia cryptica
Sphecomyia cryptica
Sphecomyia dyari
Sphecomyia dyari
Sphecomyia metallica
Sphecomyia metallica
Sphecomyia oraria
Sphecomyia oraria
Sphecomyia pattonii
Sphecomyia pattonii
Sphecomyia pseudosphecomima
Sphecomyia pseudosphecomima
Sphecomyia sexfasciata
Sphecomyia sexfasciata
Sphecomyia weismani
Sphecomyia weismani
Sphecomyiella nelsoni
Sphecomyiella nelsoni
Sphecomyiella valida
Sphecomyiella valida
Sphegina biannulata
Sphegina biannulata
Sphegina brachygaster
Sphegina brachygaster
Sphegina campanulata
Sphegina campanulata
Sphegina flavimana
Sphegina flavimana
Sphegina keeniana
Sphegina keeniana
Sphegina lobulifera
Sphegina lobulifera
Sphegina rufiventris
Sphegina rufiventris
Sphenometopa nebulosa
Sphenometopa nebulosa
Sphiximorpha durani
Sphiximorpha durani
Sphyracephala brevicornis
Sphyracephala brevicornis
Sphyracephala subbifasciata
Sphyracephala subbifasciata
Spilomyia citima
Spilomyia citima
Spilomyia crandalli
Spilomyia crandalli
Spilomyia foxleei
Spilomyia foxleei
Spilomyia interrupta
Spilomyia interrupta
Spilomyia kahli
Spilomyia kahli
Spilomyia liturata
Spilomyia liturata
Spiriverpa bella
Spiriverpa bella
Spiriverpa senex
Spiriverpa senex
Spot-veined Twigsitter
Heteropogon maculinervis
Spot-winged Prospector
Ablautus vanduzeei
Spotted Itolia
Itolia maculata
Spotted-wing Bromeliad Fly
Copestylum satur
Spring Twigsitter
Heteropogon duncani
Square-spot Deer Fly
Chrysops viduatus
Squirrel Bot Fly
Cuterebra emasculator
Stearibia nigriceps
Stearibia nigriceps
Stegana antigua
Stegana antigua
Stegana vittata
Stegana vittata
Steneretma laticauda
Steneretma laticauda
Stenochironomus albipalpus
Stenochironomus albipalpus
Stenochironomus colei
Stenochironomus colei
Stenochironomus macateei
Stenochironomus macateei
Stenochironomus poecilopterus
Stenochironomus poecilopterus
Stenochironomus pulchripennis
Stenochironomus pulchripennis
Stenochironomus woodi
Stenochironomus woodi
Stenomyia hendeli
Stenomyia hendeli
Stenopa affinis
Stenopa affinis
Stenopa vulnerata
Stenopa vulnerata
Stenopogon boharti
Stenopogon boharti
Stenopogon breviusculoides
Stenopogon breviusculoides
Stenopogon breviusculus
Stenopogon breviusculus
Stenopogon cazieri
Stenopogon cazieri
Stenopogon engelhardti
Stenopogon engelhardti
Stenopogon inquinatus
Stenopogon inquinatus
Stenopogon lomae
Stenopogon lomae
Stenopogon obispae
Stenopogon obispae
Stenopogon rufibarbis
Stenopogon rufibarbis
Stenopogon tolandi
Stenopogon tolandi
Stenopogon utahensis
Stenopogon utahensis
Stenopyrgota mexicana
Stenopyrgota mexicana
Stenoscinis longipes
Stenoscinis longipes
Stenotabanus guttatulus
Stenotabanus guttatulus
Stenotabanus psammophilus
Stenotabanus psammophilus
Stevenia deceptoria
Stevenia deceptoria
Stichopogon abdominalis
Stichopogon abdominalis
Stichopogon argenteus
Stichopogon argenteus
Stichopogon catulus
Stichopogon catulus
Stichopogon colei
Stichopogon colei