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)
Psila washingtona
Psila washingtona
Psilocurus birdi
Psilocurus birdi
Psilocurus nudiusculus
Psilocurus nudiusculus
Psilocurus puellus
Psilocurus puellus
Psilonyx annulatus
Psilonyx annulatus
Psilota buccata
Psilota buccata
Psorophora cyanescens
Psorophora cyanescens
Psorophora longipalpus
Psorophora longipalpus
Psychoda alternata
Psychoda alternata
Psychoda sigma
Psychoda sigma
Ptecticus furcatus
Ptecticus furcatus
Ptecticus melanothorax
Ptecticus melanothorax
Pterallastes thoracicus
Pterallastes thoracicus
Pterodontia flavipes
Pterodontia flavipes
Pterodontia misella
Pterodontia misella
Pterodontia vix
Pterodontia vix
Pterogramma palliceps
Pterogramma palliceps
Pteromicra pleuralis
Pteromicra pleuralis
Pteromicra similis
Pteromicra similis
Pteromicra sphenura
Pteromicra sphenura
Ptilodexia incerta
Ptilodexia incerta
Ptilodexia rufipennis
Ptilodexia rufipennis
Ptychoptera metallica
Ptychoptera metallica
Ptychoptera sculleni
Ptychoptera sculleni
Ptychoptera townesi
Ptychoptera townesi
Pullimosina pullula
Pullimosina pullula
Pyrgota fenestrata
Pyrgota fenestrata
Pyrophaena granditarsis
Pyrophaena granditarsis
Pyrophaena rosarum
Pyrophaena rosarum
Pyrtaula mendosa
Pyrtaula mendosa
Quateiella miniscula
Quateiella miniscula
Quateiella quatei
Quateiella quatei
Rabbit Bot Fly
Cuterebra buccata
Rabdophaga rosacea
Rabdophaga rosacea
Rachicerus fulvicollis
Rachicerus fulvicollis
Rachicerus honestus
Rachicerus honestus
Rachicerus nitidus
Rachicerus nitidus
Rachispoda barbata
Rachispoda barbata
Rachispoda fumipennis
Rachispoda fumipennis
Rachispoda fuscipennis
Rachispoda fuscipennis
Rachispoda limosa
Rachispoda limosa
Rachispoda michigana
Rachispoda michigana
Rachispoda richardsi
Rachispoda richardsi
Radotanypus florens
Radotanypus florens
Ravinia querula
Ravinia querula
Ravinia stimulans
Ravinia stimulans
Red Bandit
Cophura bella
Red Bladetail
Dicropaltum rubicundus
Red Goldenrobber
Callinicus calcaneus
Red-backed Pixie
Leptogaster aegra
Red-banded Laphria
Laphria asturina
Red-banded Twigsitter
Heteropogon rubrifasciatus
Red-footed Cannibalfly
Promachus rufipes
Red-horned Bandit
Cyrtopogon auripilosus
Red-legged Hammertail
Efferia cuervana
Red-legged Laphria
Laphria sadales
Red-legged Twigsitter
Hadrokolos texanus
Red-tailed Laphria
Laphria coquillettii
Red-tailed Twigsitter
Heteropogon phoenicurus
Red-thighed St Mark's Fly
Bibio pomonae
Redcedar Cone Midge
Cupressatia thujae
Reichertella montana
Reichertella montana
Reichertella producta
Reichertella producta
Reichertella simplicinervis
Reichertella simplicinervis
Reindeer Grub
Hypoderma tarandi
Reindeer Nose Botfly
Cephenemyia trompe
Remarkable Laphria
Laphria insignis
Renocera johnsoni 0
Renocera johnsoni
Renocera striata 0
Renocera striata
Repetitive Tachinid Fly
Peleteria iterans
Resseliella globosa
Resseliella globosa
Resseliella liriodendri
Resseliella liriodendri
Resseliella tulipiferae
Resseliella tulipiferae
Rhachoepalpus olivaceus
Rhachoepalpus olivaceus
Rhadiurgus variabilis
Rhadiurgus variabilis
Rhagio costatus
Rhagio costatus
Rhagio dichromaticus
Rhagio dichromaticus
Rhagio expansus
Rhagio expansus
Rhagio floridensis
Rhagio floridensis
Rhagio hirtus
Rhagio hirtus
Rhagio incisus
Rhagio incisus
Rhagio plumbeus
Rhagio plumbeus
Rhagio vertebratus
Rhagio vertebratus
Rhagoletis berberis
Rhagoletis berberis
Rhagoletis bushi
Rhagoletis bushi
Rhagoletis chionanthi
Rhagoletis chionanthi
Rhagoletis fausta
Rhagoletis fausta
Rhagoletis juniperina
Rhagoletis juniperina
Rhagoletis ribicola
Rhagoletis ribicola
Rhagoletis zephyria
Rhagoletis zephyria
Rhagoletotrypeta rohweri
Rhagoletotrypeta rohweri
Rhamphomyia basalis
Rhamphomyia basalis
Rhamphomyia brevis
Rhamphomyia brevis
Rhamphomyia gilvipes
Rhamphomyia gilvipes
Rhamphomyia nana
Rhamphomyia nana
Rhamphomyia nasoni
Rhamphomyia nasoni
Rhamphomyia priapulus
Rhamphomyia priapulus
Rhamphomyia sudigeronis
Rhamphomyia sudigeronis
Rhamphomyia vittata
Rhamphomyia vittata
Rhaphiomidas acton
Rhaphiomidas acton