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)
Dolichopus occidentalis
Dolichopus occidentalis
Dolichopus omnivagus
Dolichopus omnivagus
Dolichopus ovatus
Dolichopus ovatus
Dolichopus pennatus
Dolichopus pennatus
Dolichopus plumitarsis
Dolichopus plumitarsis
Dolichopus porphyrops
Dolichopus porphyrops
Dolichopus pulchrimanus
Dolichopus pulchrimanus
Dolichopus reflectus
Dolichopus reflectus
Dolichopus retinens
Dolichopus retinens
Dolichopus scapularis
Dolichopus scapularis
Dolichopus setifer
Dolichopus setifer
Dolichopus sexarticulatus
Dolichopus sexarticulatus
Dolichopus sicarius
Dolichopus sicarius
Dolichopus sincerus
Dolichopus sincerus
Dolichopus tonsus
Dolichopus tonsus
Dolichopus trisetosus
Dolichopus trisetosus
Dolichopus variabilis
Dolichopus variabilis
Doros aequalis
Doros aequalis
Downeshelea stonei
Downeshelea stonei
Drepanoglossa lucens
Drepanoglossa lucens
Drepanoglossa tenuirostris
Drepanoglossa tenuirostris
Drone Fly
Eristalis subgenus Eoseristalis
Drosophila (Dorsilopha) busckii
Drosophila busckii
Drosophila (Drosophila) colorata
Drosophila colorata
Drosophila algonquin
Drosophila algonquin
Drosophila deflecta
Drosophila deflecta
Drosophila falleni
Drosophila falleni
Drosophila guttifera
Drosophila guttifera
Drosophila putrida
Drosophila putrida
Drosophila quinaria
Drosophila quinaria
Drymeia spinitarsis
Drymeia spinitarsis
Dryope decrepita
Dryope decrepita
Dusky Goggle Eye
Holcocephala fusca
Dusty Hammertail
Efferia duncani
Dyscrasis hendeli
Dyscrasis hendeli
Dyseuaresta mexicana
Dyseuaresta mexicana
Dyseuaresta sobrinata
Dyseuaresta sobrinata
Earomyia aberrans
Earomyia aberrans
Earomyia veratri
Earomyia veratri
Eastern Cherry Fruit Fly
Rhagoletis cingulata
Eastern Longhorn Robber
Echthodopa formosa
Eastern Phantom Crane Fly
Bittacomorpha clavipes
Eastern Saltmarsh Mosquito
Aedes sollicitans
Eastern Treehole Mosquito
Aedes triseriatus
Eastern Twigsitter
Heteropogon macerinus
Eastern Twigsitter
Holopogon oriens
Eccoptomera melanderi
Eccoptomera melanderi
Eccoptomera simplex
Eccoptomera simplex
Echinohelea lanei
Echinohelea lanei
Ectaetia clavipes
Ectaetia clavipes
Ectecephala albistylum
Ectecephala albistylum
Ectemnia invenusta
Ectemnia invenusta
Ectrepesthoneura laffooni
Ectrepesthoneura laffooni
Efferia luna
Efferia luna
Eidalimus fuscus
Eidalimus fuscus
Eidalimus henshawi
Eidalimus henshawi
Elachiptera angusta
Elachiptera angusta
Elachiptera flaviceps
Elachiptera flaviceps
Elachiptera formosa
Elachiptera formosa
Elachiptera nigriceps
Elachiptera nigriceps
Elachiptera vittata
Elachiptera vittata
Elegant Twigsitter
Heteropogon lautus
Elgiva solicita
Elgiva solicita
Elliponeura debilis
Elliponeura debilis
Elliponeura diplotoxoides
Elliponeura diplotoxoides
Elliptera tennessa
Elliptera tennessa
Ellipteroides slossonae
Ellipteroides slossonae
Elm Agromyzid Leafminer
Agromyza aristata
Elm Samara Midge
Primavera porrecta
Eloceria nigra
Eloceria nigra
Elongate Spikeleg
Neocnemodon elongata
Empis bigoti
Empis bigoti
Empis deterra
Empis deterra
Empis geneatis
Empis geneatis
Empis nigritarsis
Empis nigritarsis
Empis spectabilis
Empis spectabilis
Empis virgata
Empis virgata
Endochironomus subtendens
Endochironomus subtendens
Eosalpingogaster nepenthe
Eosalpingogaster nepenthe
Epacmus nitidus
Epacmus nitidus
Epalpus albomaculatus
Epalpus albomaculatus
Epalpus signifer
Epalpus signifer
Ephydra gracilis
Ephydra gracilis
Epichlorops elongatus
Epichlorops elongatus
Epigrimyia polita
Epigrimyia polita
Epiphragma arizonense
Epiphragma arizonense
Epiphragma solatrix
Epiphragma solatrix
Epistrophe diaphana
Epistrophe diaphana
Epistrophe nitidicollis
Epistrophe nitidicollis
Epistrophe xanthostoma
Epistrophe xanthostoma
Epistrophella emarginata
Epistrophella emarginata
Episyrphus balteatus
Episyrphus balteatus
Eribolus longulus
Eribolus longulus
Erioptera armillaris
Erioptera armillaris
Erioptera caliptera
Erioptera caliptera
Erioptera chlorophylla
Erioptera chlorophylla
Erioptera distincta
Erioptera distincta
Erioptera dulcis
Erioptera dulcis
Erioptera femoraatra
Erioptera femoraatra
Erioptera graphica
Erioptera graphica