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)
Nylanderia arenivaga
Nylanderia arenivaga
Nylanderia austroccidua
Nylanderia austroccidua
Nylanderia bourbonica
Nylanderia bourbonica
Nylanderia bruesii
Nylanderia bruesii
Nylanderia hystrix
Nylanderia hystrix
Nylanderia parvula
Nylanderia parvula
Nylanderia phantasma
Nylanderia phantasma
Nylanderia steinheili
Nylanderia steinheili
Nylanderia terricola
Nylanderia terricola
Nylanderia wojciki
Nylanderia wojciki
Nysson aequalis
Nysson aequalis
Nysson freyigessneri
Nysson freyigessneri
Nysson intermedius
Nysson intermedius
Nysson lateralis
Nysson lateralis
Nysson recticornis
Nysson recticornis
Nysson rusticus
Nysson rusticus
Nysson subtilis
Nysson subtilis
Nysson tristis
Nysson tristis
Oak Artichoke Gall Wasp
Andricus foecundatrix
Oak Fusehorn
Arge rustica
Oak Gall Chalcidoid Wasp
Torymus californicus
Obeza floridana
Obeza floridana
Obeza septentrionalis
Obeza septentrionalis
Ochraceous Cellophane Bee
Colletes ochraceus
Odontocolon albotibiale
Odontocolon albotibiale
Odontocolon atripes
Odontocolon atripes
Odontocolon bicolor
Odontocolon bicolor
Odontocolon ochropus
Odontocolon ochropus
Odontocynips nebulosa
Odontocynips nebulosa
Odontomachus brunneus
Odontomachus brunneus
Odontomachus clarus
Odontomachus clarus
Odontomachus desertorum
Odontomachus desertorum
Odontomachus relictus
Odontomachus relictus
Odontophotopsis appacheorum
Odontophotopsis appacheorum
Odontophotopsis arcuata
Odontophotopsis arcuata
Odontophotopsis aufidia
Odontophotopsis aufidia
Odontophotopsis brunnea
Odontophotopsis brunnea
Odontophotopsis grata
Odontophotopsis grata
Odontophotopsis inconspicua
Odontophotopsis inconspicua
Odontophotopsis melicausa
Odontophotopsis melicausa
Odontophotopsis microdonta
Odontophotopsis microdonta
Odontophotopsis setifera
Odontophotopsis setifera
Odontophotopsis unicornis
Odontophotopsis unicornis
Odontophotopsis venusta
Odontophotopsis venusta
Odynerus dilectus
Odynerus dilectus
Odynerus margaratellus
Odynerus margaratellus
Oedemopsis davisi
Oedemopsis davisi
Ogloblinisca americana
Ogloblinisca americana
Olesicampe benefactor
Olesicampe benefactor
Olixon banksii
Olixon banksii
Omalus aeneus
Omalus aeneus
Omalus downeyi
Omalus downeyi
Omalus glomeratus
Omalus glomeratus
Omalus iridescens
Omalus iridescens
Omalus plicatus
Omalus plicatus
Omalus variatus
Omalus variatus
Omphale obscurinotata
Omphale obscurinotata
Onycholyda amplecta
Onycholyda amplecta
Onycholyda luteicornis
Onycholyda luteicornis
Onycholyda quebecensis
Onycholyda quebecensis
Onycholyda rufofasciata
Onycholyda rufofasciata
Onycholyda sitkensis
Onycholyda sitkensis
Oodera formosa
Oodera formosa
Ophion nigrovarius
Ophion nigrovarius
Ophionellus texanus
Ophionellus texanus
Ophiopterus cincticornis
Ophiopterus cincticornis
Orasema castilloae
Orasema castilloae
Orasema costaricensis
Orasema costaricensis
Orasema occidentalis
Orasema occidentalis
Oreopasites vanduzeei
Oreopasites vanduzeei
Oresbius fulvibasis
Oresbius fulvibasis
Oreumenes decoratus
Oreumenes decoratus
Orgilus gelechiae
Orgilus gelechiae
Ormyrus rosae
Ormyrus rosae
Ormyrus venustus
Ormyrus venustus
Orthocentrus sannio
Orthocentrus sannio
Orthogonalys pulchella
Orthogonalys pulchella
Orussus minutus
Orussus minutus
Orussus occidentalis
Orussus occidentalis
Orussus terminalis
Orussus terminalis
Osmia chalybea
Osmia chalybea
Osmia clarescens
Osmia clarescens
Osmia cyanella
Osmia cyanella
Osmia dakotensis
Osmia dakotensis
Osmia distincta
Osmia distincta
Osmia foxi
Osmia foxi
Osmia gaudiosa
Osmia gaudiosa
Osmia glauca
Osmia glauca
Osmia juxta
Osmia juxta
Osmia longula
Osmia longula
Osmia palmula
Osmia palmula
Osmia pumila
Osmia pumila
Osmia rawlinsi
Osmia rawlinsi
Osmia simillima
Osmia simillima
Osmia subfasciata
Osmia subfasciata
Oxybelus bipunctatus
Oxybelus bipunctatus
Oxybelus emarginatus
Oxybelus emarginatus
Oxybelus pacificus
Oxybelus pacificus
Oxybelus sericeus
Oxybelus sericeus
Oxybelus uniglumis
Oxybelus uniglumis