Flies
Order Hymenoptera
The Flies (Order Hymenoptera) includes 5,194 species across 102 families and 1,491 genera in our directory.
About Flies
Hymenoptera includes over 150,000 described species of ants, bees, wasps, and sawflies. Earth harbors approximately 20 quadrillion (20×10^15) ants, with a combined biomass of ~12 megatons of dry carbon - exceeding the combined biomass of all wild birds and mammals (PNAS, 2022).
Economic Impact
Pollinators contribute $235-577 billion worth of annual global food production (FAO). In the U.S., bee pollination alone benefits crops valued at $18 billion annually, and honey bees are responsible for $5.4 billion in agricultural productivity. Between April 2023-2024, 55.1% of managed honey bee colonies were lost. The U.S. bee population dropped from 5 million to 2.5 million.
Ecological Role
About 35% of the world's food crops depend on animal pollinators. The chocolate industry, valued at over $100 billion, depends on pollinating flies and midges. Ants are the dominant soil engineers in most terrestrial ecosystems, turning more soil than earthworms in many habitats.
Families in Hymenoptera (102)
Species in Hymenoptera (5,194)
Rhopalolemma rotundiceps
Rhopalolemma rotundiceps
Rhopalosoma nearcticum
Rhopalosoma nearcticum
Rhopalum atlanticum
Rhopalum atlanticum
Rhopalum clavipes
Rhopalum clavipes
Rhopalum coarctatum
Rhopalum coarctatum
Rhus Fairy Bee
Perdita rhois
Ridings' Leafcutter
Trachusa ridingsii
Ringed Paper Wasp
Polistes annularis
Robber Fly:L. thoracica
Laphria thoracica
Rocky Mountain Aerial Yellowjacket
Dolichovespula alpicola
Rogeria creightoni
Rogeria creightoni
Rogeria foreli
Rogeria foreli
Ropronia garmani
Ropronia garmani
Rose Hip Chalcidoid Wasp
Megastigmus aculeatus
Rose Sawfly
Arge ochropus
Rose Shoot Sawfly
Phylloecus trimaculatus
Roseslug Sawfly
Endelomyia aethiops
Round Honeydew Gall Wasp
Disholcaspis canescens
Round-Gall Wasp
Burnettweldia washingtonensis
Rowan Hairy-clubhorn
Trichiosoma sorbi
Rubicundiella perturbatrix
Rubicundiella perturbatrix
Rufous-backed Cellophane Bee
Colletes thoracicus
Ruptured Twig Gall Wasp
Callirhytis perdens
Russian Knapweed Gall Wasp
Aulacidea acroptilonica
Rysepyris graminis
Rysepyris graminis
Rysepyris micidus
Rysepyris micidus
Rysepyris subtilis
Rysepyris subtilis
Sacken's Velvet Ant
Dasymutilla sackenii
Samurai Wasp
Trissolcus japonicus
Sanderson's Bumble Bee
Bombus sandersoni
Sapyga angustata
Sapyga angustata
Sapyga confluenta
Sapyga confluenta
Sapyga louisi
Sapyga louisi
Sapyga martinii
Sapyga martinii
Sapyga nevadica
Sapyga nevadica
Saranaca apicalis
Saranaca apicalis
Saranaca elegans
Saranaca elegans
Saucer Gall Wasp
Feron gigas
Sawfly
Monostegia abdominalis
Saygorytes phaleratus
Saygorytes phaleratus
Scabious Sawfly
Abia nitens
Scalloped Cuckoo Sweat Bee
Sphecodes dichrous
Scambus hispae
Scambus hispae
Scambus pterophori
Scambus pterophori
Scambus tecumseh
Scambus tecumseh
Scambus vesicarius
Scambus vesicarius
Scarce Scabious Clubhorn
Abia candens
Scelio floridanus
Scelio floridanus
Schenkia parallela
Schenkia parallela
Schizopyga frigida
Schizopyga frigida
Schlettererius cinctipes
Schlettererius cinctipes
Schwarzella arizonensis
Schwarzella arizonensis
Sclerodermus carolinensis
Sclerodermus carolinensis
Sclerodermus macrogaster
Sclerodermus macrogaster
Sclerogibba rossi
Sclerogibba rossi
Scolia mexicana
Scolia mexicana
Scoliid Wasp
Campsomeris plumipes fossulana
Scolioneura vaccinii
Scolioneura vaccinii
Scolobates auriculatus
Scolobates auriculatus
Scutellista caerulea
Scutellista caerulea
Seminole Twig Ant
Pseudomyrmex seminole
Sericopompilus angustatus
Sericopompilus angustatus
Sericopompilus apicalis
Sericopompilus apicalis
Sericopompilus neotropicalis
Sericopompilus neotropicalis
Sesioplex depressus
Sesioplex depressus
Setabara histrionica
Setabara histrionica
Seticornuta terminalis
Seticornuta terminalis
Shining Amazon ant
Polyergus lucidus
Short Daggertail
Xyela julii
Sierolomorpha canadensis
Sierolomorpha canadensis
Sierolomorpha nigrescens
Sierolomorpha nigrescens
Signiphora merceti
Signiphora merceti
Silk-Button Spangle Gall Wasp
Neuroterus numismalis
Silvery Pantaloon Bee
Dasypoda argentata
Simanthedon linsleyi
Simanthedon linsleyi
Sinarachna pallipes
Sinarachna pallipes
Sirex areolatus
Sirex areolatus
Sirex cyaneus
Sirex cyaneus
Sirex nigricornis
Sirex nigricornis
Sirex varipes
Sirex varipes
Six-spotted Fairy Bee
Perdita sexmaculata
Six-spotted Scoliid Wasp
Colpa sexmaculata
Slender-faced Masked Bee
Hylaeus leptocephalus
Slevin's Cellophane Bee
Colletes slevini
Small Yellow-girdled Tenthredo
Tenthredo temula
Smeringodynerus morelios
Smeringodynerus morelios
Smicroplectrus walleyi
Smicroplectrus walleyi
Smith's Banded Mummy Wasp
Aleiodes smithi
Smooth Pea Gall Wasp
Diplolepis eglanteriae
Social Pear Sawfly
Neurotoma saltuum
Solenopsis abdita
Solenopsis abdita
Solenopsis amblychila
Solenopsis amblychila
Solenopsis aurea
Solenopsis aurea
Solenopsis carolinensis
Solenopsis carolinensis
Solenopsis geminata
Solenopsis geminata
Solenopsis tennesseensis
Solenopsis tennesseensis
Solenopsis tonsa
Solenopsis tonsa
Solenopsis validiuscula
Solenopsis validiuscula
Solenopsis zeteki
Solenopsis zeteki
Solomon's-seal sawfly
Phymatocera aterrima