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)
Phytomyza ziziae
Phytomyza ziziae
Phytosciara greylockensis
Phytosciara greylockensis
Picture-winged Fly
Delphinia picta
Picture-winged Fly
Idana marginata
Picture-winged Fly
Tritoxa incurva
Piezura nearctica
Piezura nearctica
Pigeon Fly
Pseudolynchia canariensis
Pilaria meridiana
Pilaria meridiana
Pilaria quadrata
Pilaria quadrata
Pilaria recondita
Pilaria recondita
Pilaria tenuipes
Pilaria tenuipes
Pilaria vermontana
Pilaria vermontana
Pilodiplosis helianthibulla
Pilodiplosis helianthibulla
Pinyonia edulicola
Pinyonia edulicola
Pipiza austriaca
Pipiza austriaca
Pipiza noctiluca
Pipiza noctiluca
Pipiza quadrimaculata
Pipiza quadrimaculata
Pipunculus hertzogi
Pipunculus hertzogi
Pipunculus houghi
Pipunculus houghi
Plagiomima auriceps
Plagiomima auriceps
Plains Floodwater Mosquito
Aedes trivittatus
Plateau Twigsitter
Heteropogon stonei
Platycheirus coerulescens
Platycheirus coerulescens
Platycheirus confusus
Platycheirus confusus
Platycheirus fulviventris
Platycheirus fulviventris
Platycheirus hyperboreus
Platycheirus hyperboreus
Platycheirus immarginatus
Platycheirus immarginatus
Platycheirus kelloggi
Platycheirus kelloggi
Platycheirus nearcticus
Platycheirus nearcticus
Platycheirus quadratus
Platycheirus quadratus
Platycheirus rosarum
Platycheirus rosarum
Platycheirus russatus
Platycheirus russatus
Platycheirus scambus
Platycheirus scambus
Platycheirus thylax
Platycheirus thylax
Platymya confusionis
Platymya confusionis
Platypalpus aequalis
Platypalpus aequalis
Platypalpus impexus
Platypalpus impexus
Platypalpus mesogrammus
Platypalpus mesogrammus
Platypalpus tersus
Platypalpus tersus
Platypalpus trivialis
Platypalpus trivialis
Platypeza anthrax
Platypeza anthrax
Platypeza taeniata
Platypeza taeniata
Platypezina diversa
Platypezina diversa
Platyplastinx sycophantos
Platyplastinx sycophantos
Platyura manteri
Platyura manteri
Plaumannimyia flava
Plaumannimyia flava
Plesiomma unicolor
Plesiomma unicolor
Plethochaeta testacea
Plethochaeta testacea
Plethochaeta varicolor
Plethochaeta varicolor
Pocota bomboides
Pocota bomboides
Poecilanthrax alcyon
Poecilanthrax alcyon
Poecilanthrax alpha
Poecilanthrax alpha
Poecilanthrax apache
Poecilanthrax apache
Poecilanthrax arethusa
Poecilanthrax arethusa
Poecilanthrax bicellata
Poecilanthrax bicellata
Poecilanthrax eremicus
Poecilanthrax eremicus
Poecilanthrax fasciatus
Poecilanthrax fasciatus
Poecilanthrax fuliginosus
Poecilanthrax fuliginosus
Poecilanthrax hyalinipennis
Poecilanthrax hyalinipennis
Poecilanthrax ingens
Poecilanthrax ingens
Poecilanthrax litoralis
Poecilanthrax litoralis
Poecilanthrax lucifer
Poecilanthrax lucifer
Poecilanthrax monticola
Poecilanthrax monticola
Poecilanthrax nigripennis
Poecilanthrax nigripennis
Poecilanthrax poecilogaster
Poecilanthrax poecilogaster
Poecilanthrax sackenii
Poecilanthrax sackenii
Poecilanthrax tegminipennis
Poecilanthrax tegminipennis
Poecilanthrax varius
Poecilanthrax varius
Poecilanthrax willistonii
Poecilanthrax willistonii
Poeciloderas quadripunctatus
Poeciloderas quadripunctatus
Poecilognathus damfino
Poecilognathus damfino
Poecilognathus punctipennis
Poecilognathus punctipennis
Poecilognathus sulphureus
Poecilognathus sulphureus
Poecilognathus unimaculatus
Poecilognathus unimaculatus
Poecilolycia browni
Poecilolycia browni
Poecilominettia macula
Poecilominettia macula
Poecilominettia ordinaria
Poecilominettia ordinaria
Poecilominettia puncticeps
Poecilominettia puncticeps
Poecilominettia slossonae
Poecilominettia slossonae
Poecilominettia valida
Poecilominettia valida
Pogonosoma dorsatum
Pogonosoma dorsatum
Pogonosoma ridingsi
Pogonosoma ridingsi
Polacantha arcuata
Polacantha arcuata
Polacantha composita
Polacantha composita
Polacantha gracilis
Polacantha gracilis
Polacantha grossa
Polacantha grossa
Polar Pond Fly
Sericomyia nigra
Police Car Moth
Gnophaela vermiculata
Pollenia vagabunda
Pollenia vagabunda
Polybiomyia engelhardti
Polybiomyia engelhardti
Polymera rogersiana
Polymera rogersiana
Polypedilum calopterus
Polypedilum calopterus
Polypedilum griseopunctatum
Polypedilum griseopunctatum
Polypedilum nubifer
Polypedilum nubifer
Polypedilum ontario
Polypedilum ontario
Polypedilum scalaenum
Polypedilum scalaenum
Polypedilum sordens
Polypedilum sordens
Polyporivora polypori
Polyporivora polypori
Polystepha pilulae
Polystepha pilulae
Polystepha pustuloides
Polystepha pustuloides