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)
Chyphotes evansi
Chyphotes evansi
Chyphotes petiolatus
Chyphotes petiolatus
Cicada Killer
Sphecius speciosus
(c) Tobias Thrien, some rights reserved (CC BY)
Cidaphus australis
Cidaphus australis
Cidaphus occidentalis
Cidaphus occidentalis
Cidaphus paniscoides
Cidaphus paniscoides
Cimbicid Sawfly
Abia americana
Cinquefoil Masked Bee
Hylaeus basalis
Cirrhencyrtus ehrhorni
Cirrhencyrtus ehrhorni
Cladius brullei
Cladius brullei
Cladius compressicornis
Cladius compressicornis
Cladius simplicicornis
Cladius simplicicornis
Clasping Twig Gall Wasp
Disholcaspis prehensa
Cleonymus californicus
Cleonymus californicus
Cleonymus magnificus
Cleonymus magnificus
Cleptes alienus
Cleptes alienus
Cleptes purpuratus
Cleptes purpuratus
Cleptes rufigaster
Cleptes rufigaster
Cleptes speciosus
Cleptes speciosus
Clistopyga recurva
Clistopyga recurva
Clitemnestra bipunctata
Clitemnestra bipunctata
Closterocerus cinctipennis
Closterocerus cinctipennis
Closterocerus tau
Closterocerus tau
Closterocerus trifasciatus
Closterocerus trifasciatus
Closterocerus utahensis
Closterocerus utahensis
Cloudy Masked Bee
Hylaeus nubilosus
Clover Blunt-horn
Melitta leporina
Club Gall Wasp
Atrusca clavuloides
Clustered Gall Wasp
Andricus brunneus
Clypeadon californicus
Clypeadon californicus
Clypeadon laticinctus
Clypeadon laticinctus
Clypeadon sculleni
Clypeadon sculleni
Coarse-backed Red Paper Wasp
Polistes rubiginosus
Coccobius fulvus
Coccobius fulvus
Coelichneumon azotus
Coelichneumon azotus
Coelichneumon barnstoni
Coelichneumon barnstoni
Coelichneumon deliratorius
Coelichneumon deliratorius
Coelichneumon eximius
Coelichneumon eximius
Coelichneumon orpheus
Coelichneumon orpheus
Coelichneumon pervagus
Coelichneumon pervagus
Coelichneumon pulcher
Coelichneumon pulcher
Coelichneumon punctifer
Coelichneumon punctifer
Coelichneumon viola
Coelichneumon viola
Coelioxys aztecus
Coelioxys aztecus
Coelioxys germanus
Coelioxys germanus
Coelioxys hunteri
Coelioxys hunteri
Coelioxys immaculatus
Coelioxys immaculatus
Coelioxys menthae
Coelioxys menthae
Coelioxys mexicanus
Coelioxys mexicanus
Coelioxys obtusiventris
Coelioxys obtusiventris
Coelioxys slossoni
Coelioxys slossoni
Coleocentrus flavipes
Coleocentrus flavipes
Coleocentrus harringtoni
Coleocentrus harringtoni
Coleocentrus occidentalis
Coleocentrus occidentalis
Coleocentrus rufus
Coleocentrus rufus
Colobopsis hunteri
Colobopsis hunteri
Colobopsis mississippiensis
Colobopsis mississippiensis
Colobopsis obliqua
Colobopsis obliqua
Colocistis castanea
Colocistis castanea
Colocistis crassa
Colocistis crassa
Colorado Calliopsis
Calliopsis coloradensis
Colorado Mason Bee
Osmia coloradensis
Colpa alcione
Colpa alcione
Colpognathus helvus
Colpognathus helvus
Colpotrochia crassipes
Colpotrochia crassipes
Colpotrochia fultoni
Colpotrochia fultoni
Colpotrochia trifasciata
Colpotrochia trifasciata
Columbine Sawfly
Pristiphora rufipes
Common Blue Mud Dauber
Chalybion californicum
Common Eastern Bumble Bee
Bombus impatiens
(c) Marcel_Pepin, some rights reserved (CC BY)
Common Green-Tenthredo
Tenthredo mesomela
Common Long-horned Bee
Melissodes communis
Common Paper Wasp
Polistes exclamans
Compact Carpenter Ant
Camponotus planatus
Comperiella bifasciata
Comperiella bifasciata
Compsobracon magnificus
Compsobracon magnificus
Compsocryptus resolutus
Compsocryptus resolutus
Conanthalictus bakeri
Conanthalictus bakeri
Conanthalictus macrops
Conanthalictus macrops
Conifer Sawfly
Zadiprion townsendi
Conocalama brullei
Conocalama brullei
Conocalama canadensis
Conocalama canadensis
Conocalama quebecensis
Conocalama quebecensis
Conostigmus erythrothorax
Conostigmus erythrothorax
Constricted Stem-sawfly
Janus compressus
Conura albifrons
Conura albifrons
Conura delumbis
Conura delumbis
Conura dema
Conura dema
Conura lasnierii
Conura lasnierii
Conura melana
Conura melana
Conura nigricornis
Conura nigricornis
Conura odontotae
Conura odontotae
Conura rufa
Conura rufa
Conura sanguiniventris
Conura sanguiniventris
Convoluted Gall Wasp
Andricus confertus
Copidosoma bucculatricis
Copidosoma bucculatricis
Copidosoma cervius
Copidosoma cervius
Copidosoma lymani
Copidosoma lymani
Cosmocomoidea ashmeadi
Cosmocomoidea ashmeadi
Cosmocomoidea morrilli
Cosmocomoidea morrilli