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)
Ancistrocerus lutonidus
Ancistrocerus lutonidus
Ancistrocerus spilogaster
Ancistrocerus spilogaster
Ancistrocerus spinolae
Ancistrocerus spinolae
Ancistrocerus tuberculocephalus
Ancistrocerus tuberculocephalus
Ancistrocerus undescribed species A
Ancistrocerus undescribed-a
Ancistrocerus undescribed species B
Ancistrocerus undescribed-b
Ancistrocerus unifasciatus
Ancistrocerus unifasciatus
Ancistrocerus waldenii
Ancistrocerus waldenii
Ancylandrena koebelei
Ancylandrena koebelei
Ancylandrena rozeni
Ancylandrena rozeni
Ancyloscelis apiformis
Ancyloscelis apiformis
Andrena ablegata
Andrena ablegata
Andrena accepta
Andrena accepta
Andrena aliciae
Andrena aliciae
Andrena alleghaniensis
Andrena alleghaniensis
Andrena anatolis
Andrena anatolis
Andrena andrenoides
Andrena andrenoides
Andrena androfovea
Andrena androfovea
Andrena anisochlora
Andrena anisochlora
Andrena apacheorum
Andrena apacheorum
Andrena argemonis
Andrena argemonis
Andrena barbilabris
Andrena barbilabris
Andrena bisalicis
Andrena bisalicis
Andrena biscutellata
Andrena biscutellata
Andrena bradleyi
Andrena bradleyi
Andrena brevipalpis
Andrena brevipalpis
Andrena brooksi
Andrena brooksi
Andrena canadensis
Andrena canadensis
Andrena candida
Andrena candida
Andrena cerebrata
Andrena cerebrata
Andrena confederata
Andrena confederata
Andrena cressonii
Andrena cressonii
Andrena crinita
Andrena crinita
Andrena cuneilabris
Andrena cuneilabris
Andrena cyanura
Andrena cyanura
Andrena forbesii
Andrena forbesii
Andrena fracta
Andrena fracta
Andrena frigida
Andrena frigida
Andrena fulvipennis
Andrena fulvipennis
Andrena fuscicauda
Andrena fuscicauda
Andrena geranii
Andrena geranii
Andrena haynesi
Andrena haynesi
Andrena hilaris
Andrena hilaris
Andrena hippotes
Andrena hippotes
Andrena imitatrix
Andrena imitatrix
Andrena impolita
Andrena impolita
Andrena jessicae
Andrena jessicae
Andrena krigiana
Andrena krigiana
Andrena lativentris
Andrena lativentris
Andrena levipes
Andrena levipes
Andrena livida
Andrena livida
Andrena mariae
Andrena mariae
Andrena mentzeliae
Andrena mentzeliae
Andrena mesillae
Andrena mesillae
Andrena nigripes
Andrena nigripes
Andrena nigrocaerulea
Andrena nigrocaerulea
Andrena nivalis
Andrena nivalis
Andrena nuda
Andrena nuda
Andrena obscuripennis
Andrena obscuripennis
Andrena olivacea
Andrena olivacea
Andrena palpalis
Andrena palpalis
Andrena piperi
Andrena piperi
Andrena prima
Andrena prima
Andrena principalis
Andrena principalis
Andrena pruni
Andrena pruni
Andrena pulverea
Andrena pulverea
Andrena rehni
Andrena rehni
Andrena robertsonii
Andrena robertsonii
Andrena rudbeckiae
Andrena rudbeckiae
Andrena rufosignata
Andrena rufosignata
Andrena scotoptera
Andrena scotoptera
Andrena sigmundi
Andrena sigmundi
Andrena sola
Andrena sola
Andrena sphaeralceae
Andrena sphaeralceae
Andrena submoesta
Andrena submoesta
Andrena violae
Andrena violae
Andrena vulpicolor
Andrena vulpicolor
Andricus bakkeri
Feron bakkeri
Andricus balanella
Andricus balanella
Andricus capillatus
Andricus capillatus
Andricus cooki
Andricus cooki
Andricus fullawayi
Druon fullawayi
Andricus lustrans
Andricus lustrans
Andricus mamillaformis
Andricus mamillaformis
Andricus murtfeldtae
Andricus murtfeldtae
Andricus pisiformis
Andricus pisiformis
Andricus quercusformosus
Andricus quercusformosus
Andricus robustus
Andricus robustus
Andricus scutellum
Feron scutellum
Andricus sessilum
Andricus sessilum
Andricus splendens
Feron splendens
Andricus stropus
Andricus stropus
Andricus texanus
Andricus texanus
Andricus tubularius
Andricus tubularius
Andricus weldi
Andricus weldi
Angled Stem-sawfly
Cephus spinipes
Anisepyris occidentalis
Anisepyris occidentalis
Anisepyris williamsi
Anisepyris williamsi
Anisotacrus spatiosus
Anisotacrus spatiosus
Annulate Masked Bee
Hylaeus annulatus