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)
Baryceros audax
Baryceros audax
Baryceros fortis
Baryceros fortis
Baryceros texanus
Baryceros texanus
Basket Cocoon Wasp
Meteorus pulchricornis
Bassettia flavipes
Bassettia flavipes
Bathythrix triangularis
Bathythrix triangularis
Bellflower Resin Bee
Megachile campanulae
Belted Rose Spinner
Pamphilius inanitus
Bembecinus floridanus
Bembecinus floridanus
Bembecinus nanus
Bembecinus nanus
Bembecinus neglectus
Bembecinus neglectus
Bembix americana
Bembix americana
Bembix amoena
Bembix amoena
Bembix belfragei
Bembix belfragei
Bembix dentilabris
Bembix dentilabris
Bembix nubilipennis
Bembix nubilipennis
Bembix pallidipicta
Bembix pallidipicta
Bembix rugosa
Bembix rugosa
Bembix sayi
Bembix sayi
Bembix texana
Bembix texana
Berberis Sawfly
Arge berberidis
Bessey's Nomad
Nomada besseyi
Bethylus amoenus
Bethylus amoenus
Bethylus decipiens
Bethylus decipiens
Bi-colored Pyramid Ant
Dorymyrmex bicolor
Bicolored Agapostemon Sweat Bee
Agapostemon viriscens
Bicolored Amazon ant
Polyergus bicolor
Bicolored Harvester Ant
Pogonomyrmex bicolor
Bicyrtes capnopterus
Bicyrtes capnopterus
Bicyrtes fodiens
Bicyrtes fodiens
Bicyrtes insidiatrix
Bicyrtes insidiatrix
Bicyrtes ventralis
Bicyrtes ventralis
Biorhiza caepulaeformis
Biorhiza caepulaeformis
Birch Leaf-mining Sawfly
Fenusa pumila
Birch Sawfly
Cimbex femoratus
Birkmann's Cellophane Bee
Colletes birkmanni
Black Bramble Stem-sawfly
Phylloecus niger
Black Carpenter Ant
Camponotus pennsylvanicus
Black Grain Stem Sawfly
Trachelus tabidus
Black Masked Bee
Hylaeus nigritus
Black and Yellow Mud Dauber
Sceliphron caementarium
(c) Newt Knorpp, some rights reserved (CC BY)
Black-banded Miner Bee
Andrena transnigra
Black-banded Spider Wasp
Anoplius viaticus
Black-headed Ash Sawfly
Tethida barda
Black-tailed Bumble Bee
Bombus melanopygus
Black-velvet Flat-Nomad
Paranomada velutina
Blackberry Seed Gall Wasp
Diastrophus cuscutaeformis
Blackish Blunt-horn
Melitta nigricans
Blackjacket
Vespula consobrina
Blacus caduceus
Blacus caduceus
Blacus ruficornis
Blacus ruficornis
Blastophaga psenes
Blastophaga psenes
Blastothrix longipennis
Blastothrix longipennis
Blue Gum Chalcidoid Wasp
Leptocybe invasa
Blue-gum Chalcidoid Wasp
Ophelimus eucalypti
Blue-winged Wasp
Scolia dubia
Blueberry Blunt-horn
Melitta americana
Blueberry Mason Bee
Osmia ribifloris
Bluegum Snout-beetle Egg Parasite
Anaphes nitens
Bocchus hainesi
Bocchus hainesi
Boll's Potter Wasp
Eumenes bollii
Bombus ashtoni
Bombus ashtoni
Boreogalba gladifer
Boreogalba gladifer
Brachycaudonia californica
Brachycaudonia californica
Brachycistis elegantula
Brachycistis elegantula
Brachycyrtus ornatus
Brachycyrtus ornatus
Brachymelecta interrupta
Brachymelecta interrupta
Brachymelecta larreae
Brachymelecta larreae
Brachymeria flavipes
Brachymeria flavipes
Brachymeria hammari
Brachymeria hammari
Brachymeria ovata
Brachymeria ovata
Brachymeria podagrica
Brachymeria podagrica
Brachymeria tegularis
Brachymeria tegularis
Brachymyrmex brevicornis
Brachymyrmex brevicornis
Brachymyrmex minutus
Brachymyrmex minutus
Brachymyrmex musculus
Brachymyrmex musculus
Brachymyrmex patagonicus
Brachymyrmex patagonicus
Brachynomada annectens
Brachynomada annectens
Brachynomada margaretae
Brachynomada margaretae
Brachyserphus abruptus
Brachyserphus abruptus
Brachyserphus lucens
Brachyserphus lucens
Bracon mellitor 0
Bracon mellitor
Bramble Sawfly
Arge cyanocrocea
Brasema allynii
Brasema allynii
Brasema gemmarii
Brasema gemmarii
Brasema speciosum
Brasema speciosum
Brazilian Peppertree Seed Chalcidoid Wasp
Megastigmus transvaalensis
Broad-handed Leafcutter Bee
Megachile latimanus
Broad-headed Amazon Ant
Polyergus breviceps
Bronze Fusehorn
Arge ustulata
Brown-belted Bumble Bee
Bombus griseocollis
Brown-winged Long-horned Bee
Melissodes comptoides
Bryant's Cellophane Bee
Colletes bryanti
Buckwheat Masked Bee
Hylaeus polifolii
Bumble bee wolf
Philanthus bicinctus
Burkseus robustus
Burkseus robustus
Burnettweldia californicordazi
Burnettweldia californicordazi
Caenochrysis deversor
Caenochrysis deversor
Caenochrysis doriae
Caenochrysis doriae
Caliadurgus fasciatellus
Caliadurgus fasciatellus