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)
Polystepha quercifolia
Polystepha quercifolia
Polystepha symmetrica
Polystepha symmetrica
Poplar Twiggall Fly
Euhexomyza schineri
Portal Hammertail
Efferia mortensoni
Potato Gall Midge
Rabdophaga salicisbatatus
Potato Scab Gnat
Pnyxia scabiei
Prairie Hammertail
Efferia prairiensis
Prairie Laphria
Laphria vorax
Pritchardomyia vespoides
Pritchardomyia vespoides
Probezzia albitibia
Probezzia albitibia
Probezzia sabroskyi
Probezzia sabroskyi
Probezzia xanthogaster
Probezzia xanthogaster
Procecidochares anthracina
Procecidochares anthracina
Procecidochares atra
Procecidochares atra
Procecidochares flavipes
Procecidochares flavipes
Procecidochares minuta
Procecidochares minuta
Procecidocharoides penelope
Procecidocharoides penelope
Procecidocharoides pullatus
Procecidocharoides pullatus
Proceroplatus elegans
Proceroplatus elegans
Prochyliza brevicornis
Prochyliza brevicornis
Prochyliza nigrimana
Prochyliza nigrimana
Prochyliza varipes
Prochyliza varipes
Procladius bellus
Procladius bellus
Proctacanthella cacopiloga
Proctacanthella cacopiloga
Proctacanthella exquisita
Proctacanthella exquisita
Proctacanthella leucopogon
Proctacanthella leucopogon
Proctacanthella robusta
Proctacanthella robusta
Proctacanthella wilcoxi
Proctacanthella wilcoxi
Proctacanthella willistoni
Proctacanthella willistoni
Proctacanthus brevipennis
Proctacanthus brevipennis
Proctacanthus duryi
Proctacanthus duryi
Proctacanthus gracilis
Proctacanthus gracilis
Proctacanthus heros
Proctacanthus heros
Proctacanthus hinei
Proctacanthus hinei
Proctacanthus longus
Proctacanthus longus
Proctacanthus micans
Proctacanthus micans
Proctacanthus nearno
Proctacanthus nearno
Proctacanthus occidentalis
Proctacanthus occidentalis
Proctacanthus philadelphicus
Proctacanthus philadelphicus
Proctacanthus rodecki
Proctacanthus rodecki
Prodiplosis morrisi
Prodiplosis morrisi
Prodiplosis violicola
Prodiplosis violicola
Prolatiforceps fulviventris
Prolatiforceps fulviventris
Prolepsis tristis
Prolepsis tristis
Prolimnophila areolata
Prolimnophila areolata
Promachella pilosa
Promachella pilosa
Promachus albifacies
Promachus albifacies
Promachus aldrichii
Promachus aldrichii
Promachus atrox
Promachus atrox
Promachus dimidiatus
Promachus dimidiatus
Promachus fitchii
Promachus fitchii
Promachus painteri
Promachus painteri
Promachus princeps
Promachus princeps
Promachus quadratus
Promachus quadratus
Promachus sackeni
Promachus sackeni
Promachus truquii
Promachus truquii
Prosenoides assimilis
Prosenoides assimilis
Prosimulium mixtum
Prosimulium mixtum
Protanyderus margarita
Protanyderus margarita
Protanyderus vipio
Protanyderus vipio
Protaplonyx sarcobati
Protaplonyx sarcobati
Protaxymyia thuja
Protaxymyia thuja
Protocalliphora bennetti
Protocalliphora bennetti
Protocalliphora rugosa
Protocalliphora rugosa
Protodejeania echinata
Protodejeania echinata
Protodejeania hystricosa
Protodejeania hystricosa
Protopiophila latipes
Protopiophila latipes
Protopiophila litigata
Protopiophila litigata
Psectrotanypus discolor
Psectrotanypus discolor
Psellidotus annamariae
Psellidotus annamariae
Psellidotus defectus
Psellidotus defectus
Psellidotus johnsoni
Psellidotus johnsoni
Psellidotus novella
Psellidotus novella
Psellidotus snowi
Psellidotus snowi
Pseudiastata nebulosa
Pseudiastata nebulosa
Pseudodinia antennalis
Pseudodinia antennalis
Pseudoerinna jonesi
Pseudoerinna jonesi
Pseudogaurax anchora
Pseudogaurax anchora
Pseudoleria longigena
Pseudoleria longigena
Pseudoleria parvitarsus
Pseudoleria parvitarsus
Pseudoleria robusta
Pseudoleria robusta
Pseudolimnophila australina
Pseudolimnophila australina
Pseudolimnophila contempta
Pseudolimnophila contempta
Pseudolimnophila inornata
Pseudolimnophila inornata
Pseudolynchia brunnea
Pseudolynchia brunnea
Pseudonomoneura micheneri
Pseudonomoneura micheneri
Pseudopachychaeta approximatonervis
Pseudopachychaeta approximatonervis
Pseudoscaeva diversifasciata
Pseudoscaeva diversifasciata
Pseudoseioptera albipes
Pseudoseioptera albipes
Pseudotephritina cribellum
Pseudotephritina cribellum
Pseudotephritina inaequalis
Pseudotephritina inaequalis
Pseudotephritis corticalis
Pseudotephritis corticalis
Pseudotephritis vau
Pseudotephritis vau
Psila angustata
Psila angustata
Psila atrata
Psila atrata
Psila bivittata
Psila bivittata
Psila dimidiata
Psila dimidiata
Psila fallax
Psila fallax
Psila lateralis
Psila lateralis
Psila levis
Psila levis