| Allograpta (Allograpta) obliqua Say, 1823 | Common Oblique Syrphid |
| Allograpta (Fazia) micrura Osten Sacken, 1877 | |
| Allograpta exoticus Wiedemann, 1830 | |
| Allograpta radiatus Bigot, 1857 | |
| Anasimyia lunulata Meigen, 1822 | |
| Arctophila flagrans (Osten Sacken, 1875) | ⇒ Sericomyia flagrans Osten-sacken, 1875 |
| Arctophila harveyi (Osburn, 1908) | ⇒ Sericomyia harveyi Osburn, 1908 |
| Arctosyrphus willingii Smith, 1912 | |
| Asemosyrphus polygrammus Loew, 1872 | |
| Baccha elongatus Fabricius, 1775 | |
| Baccha funebris Macquart, 1834 | |
| Baccha marmorata (Bigot, 1883) | ⇒ Leucopodella marmorata Bigot, 1884 |
| Baccha nepenthe (Hull, 1943) | ⇒ Salpingogaster nepenthe Hull, 1943 |
| Blera analis Macquart, 1842 | Orange-Tailed Wood Fly |
| Blera armillata Osten Sacken, 1875 | |
| Blera badia Walker, 1849 | Common Wood Fly |
| Blera banksi Hull, 1945 | |
| Blera confusa Johnson, 1913 | Confusing Wood Fly |
| Blera flukei Curran, 1953 | |
| Blera garretti Curran, 1924 | |
| Blera humeralis Williston, 1882 | |
| Blera johnsoni Coquillett, 1894 | |
| Blera metcalfi Curran, 1925 | |
| Blera nigra Williston, 1887 | |
| Blera nigripes Curran, 1925 | |
| Blera notata Wiedemann, 1830 | |
| Blera pictipes Bigot, 1883 | |
| Blera robusta Curran, 1922 | |
| Blera scitula Williston, 1882 | |
| Blera umbratilis Williston, 1887 | |
| Brachyopa cinereovittata Bigot, 1883 | |
| Brachyopa cynops Snow, 1892 | Piper mistletoe |
| Brachyopa daeckei Johnson, 1917 | Greenland stitchwort |
| Brachyopa diversa Johnson, 1917 | Greenland stitchwort |
| Brachyopa ferruginea Fallen, 1817 | |
| Brachyopa flavescens Shannon, 1915 | Obispo suncup |
| Brachyopa gigas Lovett, 1919 | Frog's-britches |
| Brachyopa media Williston, 1882 | Whorled clustervine |
| Brachyopa nigricauda (Curran, 1922) | ⇒ Brachyopa daeckei Johnson, 1917 |
| Brachyopa notata Osten Sacken, 1875 | |
| Brachyopa perplexa Curran, 1922 | |
| Brachyopa punctipennis Curran, 1925 | |
| Brachyopa rufiabdominalis Jones, 1917 | Bolander's silene |
| Brachyopa vacua Osten Sacken, 1875 | |
| Brachypalpus (Brachypalpus) oarus Walker, 1849 | Eastern Catkin Fly |
| Brachypalpus (Crioprora) alopex Osten Sacken, 1877 | |
| Brachypalpus (Crioprora) amithaon Walker, 1849 | |
| Brachypalpus (Crioprora) cyanella Osten Sacken, 1877 | |
| Brachypalpus (Crioprora) cyanogaster Loew, 1872 | Juniper globemallow |
| Brachypalpus (Crioprora) femorata Williston, 1882 | |
| Brachypalpus margaritus (Hull, 1946) | ⇒ Brachypalpus oarus Walker, 1849 |
| Brachypalpus trifasciatus Hull, 1944 | |
| Callicera duncani Curran, 1935 | |
| Callicera erraticum Walker, 1849 | |
| Callicera montensis Snow, 1892 | Piper mistletoe |
| Ceriana abbreviata Loew, 1864 | Northern Wasp Fly |
| Ceriana bellardii Shannon, 1925 | |
| Ceriana engelhardti Shannon, 1925 | |
| Ceriana floridensis Shannon, 1922 | |
| Ceriana macquarti Shannon, 1925 | Beach suncup |
| Ceriana mime Hull, 1935 | |
| Ceriana pictula Loew, 1853 | |
| Ceriana sayi Shannon, 1925 | |
| Ceriana signifera Loew, 1853 | |
| Ceriana snowi Adams, 1904 | |
| Ceriana townsendi Snow, 1895 | |
| Ceriana tridens Loew, 1872 | |
| Chalcosyrphus (Chalcosyrphus) flexus Curran, 1941 | |
| Chalcosyrphus (Chalcosyrphus) ontario Curran, 1941 | |
| Chalcosyrphus (Xylotina) nemorum Fabricius, 1805 | Dusky-Banded Forest Fly |
| Chalcosyrphus (Xylotomima) inarmatus Hunter, 1897 | |
| Chalcosyrphus (Xylotomima) libo Walker, 1849 | Long-Haired Forest Fly |
| Chalcosyrphus (Xylotomima) metallifera Bigot, 1883 | |
| Chalcosyrphus (Xylotomima) plesia Curran, 1925 | |
| Chalcosyrphus (Xylotomima) vecors Osten Sacken, 1875 | |
| Chalcosyrphus althaea Hull, 1943 | |
| Chalcosyrphus anomala Shannon, 1925 | |
| Chalcosyrphus anthreas Walker, 1849 | |
| Chalcosyrphus arcticus Curran, 1941 | |
| Chalcosyrphus aristata Johnson, 1929 | |
| Chalcosyrphus astarte Hull, 1943 | |
| Chalcosyrphus azureus Fluke, 1953 | |
| Chalcosyrphus brevipilosa Shannon, 1926 | |
| Chalcosyrphus carri Curran, 1941 | |
| Chalcosyrphus cascadensis Weems, 1965 | |
| Chalcosyrphus curvarius Curran, 1941 | |
| Chalcosyrphus depressa Shannon, 1925 | |
| Chalcosyrphus dubia Shannon, 1926 | |
| Chalcosyrphus metallica Wiedemann, 1830 | |
| Chalcosyrphus nigromaculata Jones, 1917 | |
| Chalcosyrphus parvus Williston, 1887 | |
| Chalcosyrphus pigra Fabricius, 1794 | |
| Chalcosyrphus primavera Hull, 1944 | |
| Chalcosyrphus sacajaweae Shannon, 1926 | |
| Chalcosyrphus satanica Bigot, 1883 | |
| Chalcosyrphus violascens Megerle, 1803 | |
| Chamaesyrphus apichaetus (Curran, 1923) | ⇒ Pelecocera apichaetus Curran, 1923 |
| Chamaesyrphus willistoni Snow, 1895 | |
| Cheilosia (Convocheila) pagana Meigen, 1822 | Hover fly |
| Cheilosia (Convocheila) pallipes Loew, 1863 | |
| Cheilosia aesyctes Walker, 1849 | |
| Cheilosia alaskensis Hunter, 1897 | Hemlock bark maggot |
| Cheilosia aldrichi Hunter, 1896 | |
| Cheilosia angelica (Telford, 1939) | ⇒ Cheilosia orilliaenis Curran, 1922 |
| Cheilosia atrocapilla Hull & Fluke, 1950 | |
| Cheilosia baroni Williston, 1887 | |
| Cheilosia bicolorata Shannon, 1922 | |
| Cheilosia bigelowi Curran, 1926 | |
| Cheilosia borealis Coquillett, 1900 | |
| Cheilosia brevichaeta Shannon, 1922 | |
| Cheilosia browni Curran, 1931 | |
| Cheilosia burkei Shannon, 1922 | |
| Cheilosia calthus Shannon, 1922 | |
| Cheilosia canada Hull & Fluke, 1950 | |
| Cheilosia canadensis Shannon, 1922 | |
| Cheilosia capillata Loew, 1863 | |
| Cheilosia catalina Shannon, 1922 | |
| Cheilosia chalybescens Williston, 1893 | |
| Cheilosia chintimini Lovett, 1921 | |
| Cheilosia chionthrix Hull & Fluke, 1950 | |
| Cheilosia chrysochlamys Williston, 1891 | |
| Cheilosia chrysothrix Hull & Fluke, 1950 | |
| Cheilosia cineralis (Hull & Fluke, 1950) | ⇒ Cheilosia cynoprosopa Hull & Fluke, 1950 |
| Cheilosia coerula Fluke & Hull, 1946 | |
| Cheilosia columbiae Curran, 1922 | |
| Cheilosia comosa Loew, 1863 | |
| Cheilosia consentiens Curran, 1926 | |
| Cheilosia coriacea Hull & Fluke, 1950 | |
| Cheilosia cottrelli Telford, 1939 | Rue |
| Cheilosia cratorhina Hull & Fluke, 1950 | |
| Cheilosia cyanea Hunter, 1896 | |
| Cheilosia cyanescens Loew, 1863 | |
| Cheilosia cynoprosopa Hull & Fluke, 1950 | |
| Cheilosia dakota (Hull & Fluke, 1950) | ⇒ Cheilosia orilliaenis Curran, 1922 |
| Cheilosia decumbens (Hull & Fluke, 1950) | ⇒ Cheilosia pikei Shannon, 1922 |
| Cheilosia ferruginea Lovett, 1919 | |
| Cheilosia flavipennis (Hull & Fluke, 1950) | ⇒ Cheilosia alaskensis Hunter, 1897 |
| Cheilosia flavosericea Hull & Fluke, 1950 | |
| Cheilosia florella Shannon, 1922 | |
| Cheilosia fuma (Fluke & Hull, 1946) | ⇒ Cheilosia chintimini Lovett, 1921 |
| Cheilosia gemini Shannon, 1922 | |
| Cheilosia hecate ♰ Hull & Fluke, 1950 | |
| Cheilosia hermiona Hull & Fluke, 1950 | |
| Cheilosia hesperius Shannon, 1922 | |
| Cheilosia hiantha Hull & Fluke, 1950 | |
| Cheilosia hiawatha Shannon, 1922 | |
| Cheilosia hirsuta (Hull & Fluke, 1950) | ⇒ Cheilosia nigrovittata Lovett, 1919 |
| Cheilosia hoodianus Bigot, 1883 | |
| Cheilosia hunteri Curran, 1922 | |
| Cheilosia hyacintha Hull & Fluke, 1950 | |
| Cheilosia idahoa Shannon, 1922 | |
| Cheilosia julietta Shannon, 1922 | |
| Cheilosia laevifrons Jones, 1907 | |
| Cheilosia laevis Bigot, 1883 | |
| Cheilosia latrans Walker, 1849 | |
| Cheilosia leucoparea Loew, 1863 | |
| Cheilosia livida Wehr, 1922 | |
| Cheilosia lucta Snow, 1895 | |
| Cheilosia luna Hull & Fluke, 1950 | |
| Cheilosia margarita Hull & Fluke, 1950 | |
| Cheilosia meganosa Hull & Fluke, 1950 | |
| Cheilosia megatarsa Fluke & Hull, 1947 | |
| Cheilosia minnesotensis (Telford, 1939) | ⇒ Cheilosia orilliaenis Curran, 1922 |
| Cheilosia montanipes Hull & Fluke, 1950 | |
| Cheilosia nannomorpha Hull & Fluke, 1950 | |
| Cheilosia nasica Hull & Fluke, 1950 | |
| Cheilosia nigrescens Hull & Fluke, 1950 | |
| Cheilosia nigroapicata Curran, 1926 | |
| Cheilosia nigrobarba Hull & Fluke, 1950 | |
| Cheilosia nigrocoerulea Lovett, 1921 | |
| Cheilosia nigrocyanea Hull & Fluke, 1950 | |
| Cheilosia nigrofasciata Curran, 1926 | |
| Cheilosia nigrovittata Lovett, 1919 | |
| Cheilosia niveifrons Hull & Fluke, 1950 | |
| Cheilosia nokomis (Hull & Fluke, 1950) | ⇒ Cheilosia orilliaenis Curran, 1922 |
| Cheilosia nyctichroma Hull & Fluke, 1950 | |
| Cheilosia obesa Hull & Fluke, 1950 | |
| Cheilosia occidentalis Williston, 1882 | Whorled clustervine |
| Cheilosia olivia Hull & Fluke, 1950 | |
| Cheilosia ontario Curran, 1922 | |
| Cheilosia orilliaenis Curran, 1922 | |
| Cheilosia orilliaensis Curran, 1922 | |
| Cheilosia pacifica (Hunter, 1897) | ⇒ Cheilosia nigrocoerulea Lovett, 1921 |
| Cheilosia paganus Meigen, 1822 | |
| Cheilosia pikei Shannon, 1922 | Heartleaf suncup |
| Cheilosia pilosipes Hull & Fluke, 1950 | |
| Cheilosia platycera Hine, 1922 | |
| Cheilosia plumosa (Coquillett, 1904) | ⇒ Hiatomyia plumosa Coquillett, 1904 |
| Cheilosia pluto Hull & Fluke, 1950 | |
| Cheilosia plutonia Hunter, 1897 | |
| Cheilosia pontiaca Shannon, 1922 | |
| Cheilosia porcina Hull & Fluke, 1950 | |
| Cheilosia prima Hunter, 1896 | |
| Cheilosia primoveris Shannon, 1915 | |
| Cheilosia promethea Hull & Fluke, 1950 | |
| Cheilosia pulchripes (Loew, 1857) | ⇒ Cheilosia paganus Meigen, 1822 |
| Cheilosia punctulata Hunter, 1897 | |
| Cheilosia rhinoprosopa Hull & Fluke, 1950 | |
| Cheilosia robusta Hine, 1922 | |
| Cheilosia rubroflava Hull & Fluke, 1950 | |
| Cheilosia scilla Hull & Fluke, 1950 | |
| Cheilosia sensua Curran, 1922 | |
| Cheilosia seripila Hull & Fluke, 1950 | |
| Cheilosia shannoni Curran, 1923 | |
| Cheilosia sialia Shannon, 1922 | |
| Cheilosia signatiseta Hunter, 1896 | |
| Cheilosia skinneri Johnson, 1903 | |
| Cheilosia sonoriana Shannon, 1922 | |
| Cheilosia sororcula Williston, 1891 | |
| Cheilosia speculum Hull & Fluke, 1950 | |
| Cheilosia subchalybea Curran, 1923 | |
| Cheilosia swannanoa Brimley, 1925 | |
| Cheilosia tantalus Hull & Fluke, 1950 | |
| Cheilosia tarda Snow, 1895 | |
| Cheilosia tessa Hull & Fluke, 1950 | |
| Cheilosia townsendi Hunter, 1896 | |
| Cheilosia tristis Loew, 1863 | |
| Cheilosia varipila (Fluke & Hull, 1946) | ⇒ Cheilosia yukonensis Shannon, 1922 |
| Cheilosia variseta (Fluke & Hull, 1946) | ⇒ Cheilosia yukonensis Shannon, 1922 |
| Cheilosia willistoni Snow, 1895 | |
| Cheilosia wisconsinensis Fluke & Hull, 1947 | |
| Cheilosia yukonensis Shannon, 1922 | |
| Chrysogaster anniae (Sedman, 1966) | ⇒ Orthonevra anniae Sedman, 1966 |
| Chrysogaster antitheus Walker, 1849 | Largeflower milkweed |
| Chrysogaster flukei (Sedman, 1964) | ⇒ Orthonevra flukei Sedman, 1964 |
| Chrysogaster inflatifrons Shannon, 1916 | Heartleaf suncup |
| Chrysogaster minuta (Hull, 1945) | ⇒ Orthonevra minuta Hull, 1945 |
| Chrysogaster nigrovittata (Loew, 1876) | ⇒ Orthonevra nigrovittata Loew, 1876 |
| Chrysogaster parva (Shannon, 1916) | ⇒ Orthonevra parva Shannon, 1916 |
| Chrysogaster robusta (Shannon, 1916) | ⇒ Orthonevra robusta Shannon, 1916 |
| Chrysogaster sinuosa Bigot, 1883 | |
| Chrysogaster sonorensis (Sedman, 1964) | ⇒ Orthonevra sonorensis Shannon, 1964 |
| Chrysogaster texana (Shannon, 1916) | ⇒ Chrysogaster antitheus Walker, 1849 |
| Chrysogaster weemsi (Sedman, 1966) | ⇒ Orthonevra weemsi Sedman, 1966 |
| Chrysosyrphus alaskensis Shannon, 1922 | |
| Chrysosyrphus bigelowi Curran, 1926 | |
| Chrysosyrphus canadensis Curran, 1933 | |
| Chrysosyrphus chilosioides Shannon, 1922 | |
| Chrysosyrphus ithaca Shannon, 1925 | |
| Chrysosyrphus latus Loew, 1863 | |
| Chrysosyrphus nigripennis Williston, 1882 | |
| Chrysosyrphus versipellis Williston, 1887 | |
| Chrysotoxum caucasicum Sack, 1930 | |
| Chrysotoxum chinook Shannon, 1926 | Beach suncup |
| Chrysotoxum derivatum (Walker, 1849) | ⇒ Chrysotoxum caucasicum Sack, 1930 |
| Chrysotoxum fasciata Müller, 1764 | |
| Chrysotoxum fasciolata De Geer, 1776 | |
| Chrysotoxum flavifrons Macquart, 1842 | Mountain melonleaf |
| Chrysotoxum laterale Loew, 1864 | |
| Chrysotoxum perplexum Johnson, 1924 | Black-Legged Meadow Fly |
| Chrysotoxum pubescens Loew, 1860 | |
| Chrysotoxum radiosum Shannon, 1926 | Beach suncup |
| Chrysotoxum villosulum Bigot, 1883 | |
| Chrysotoxum willistoni Curran, 1924 | |
| Chrysotoxum ypsilon Williston, 1887 | Beach clustervine |
| Copestylum (Phalacromya) anna Williston, 1887 | |
| Copestylum (Phalacromya) apiciferum Townsend, 1895 | |
| Copestylum (Phalacromya) avidum Osten Sacken, 1877 | |
| Copestylum (Phalacromya) barei Curran, 1925 | |
| Copestylum (Phalacromya) caudatum Curran, 1927 | |
| Copestylum (Phalacromya) comstocki Williston, 1887 | |
| Copestylum (Phalacromya) florida Hull, 1941 | |
| Copestylum (Phalacromya) haagii Jaennicke, 1867 | |
| Copestylum (Phalacromya) isabellina Williston, 1887 | |
| Copestylum (Phalacromya) lentum Williston, 1887 | Beach clustervine |
| Copestylum (Phalacromya) mexicanum Macquart, 1842 | Mexican Cactus Fly |
| Copestylum (Phalacromya) satur Osten Sacken, 1877 | |
| Copestylum (Phalacromya) tamaulipanum Townsend, 1898 | Syrphid fly |
| Copestylum (Phalacromya) tricinctum Bigot, 1875 | |
| Copestylum (Phalacromya) victoria Williston, 1887 | |
| Copestylum (Volucellosia) fornax Townsend, 1895 | |
| Copestylum abdominale Wiedemann, 1830 | |
| Copestylum anastasia Hull, 1946 | |
| Copestylum apicale Loew, 1866 | Syrphid fly |
| Copestylum eugenia Williston, 1887 | |
| Copestylum fraudulentum Williston, 1891 | |
| Copestylum limbipennis Williston, 1887 | |
| Copestylum marginata Say, 1829 | |
| Copestylum opalescens Townsend, 1901 | |
| Copestylum pallens Wiedemann, 1830 | |
| Copestylum posticum Say, 1829 | |
| Copestylum pusillum Macquart, 1842 | |
| Copestylum quadratum Williston, 1891 | |
| Copestylum simile Giglio-Tos, 1892 | Sand spikemoss |
| Copestylum sternale Curran, 1930 | |
| Copestylum vacuum Fabricius, 1775 | |
| Copestylum vesicularium Curran, 1947 | |
| Copestylum vitttatum Thompson, 1976 | |
| Criorhina aurea Lovett, 1919 | Frog's-britches |
| Criorhina bubulcus Walker, 1849 | |
| Criorhina caudata Curran, 1925 | |
| Criorhina coquilletti Williston, 1892 | |
| Criorhina grandis Lovett, 1921 | Catesby's pitcherplant |
| Criorhina kincaidi Coquillett, 1901 | |
| Criorhina latipilosa Curran, 1925 | |
| Criorhina lupina Williston, 1882 | |
| Criorhina mystaceae Curran, 1925 | |
| Criorhina nigripes Williston, 1882 | |
| Criorhina nigriventris Walton, 1911 | Bare-Cheeked Bumble Fly |
| Criorhina quadriboscis Lovett, 1919 | Frog's-britches |
| Criorhina rufocaudata (Nayar & Cole, 1968) | ⇒ Criorhina caudata Curran, 1925 |
| Criorhina tricolor Coquillett, 1900 | |
| Criorhina verbosa Walker, 1849 | |
| Cynorhinella bella Williston, 1882 | |
| Cynorhinella canadensis (Curran, 1922) | ⇒ Cynorhinella bella Williston, 1882 |
| Cynorhinella longinasus Shannon, 1924 | Longcapsule suncup |
| Dasysyrphus amalopis Osten Sacken, 1875 | |
| Dasysyrphus creper Snow, 1895 | |
| Dasysyrphus limatus Hine, 1922 | |
| Dasysyrphus lotus Williston, 1887 | |
| Dasysyrphus pauxillus Williston, 1887 | Montane Conifer Fly |
| Dasysyrphus pinastri De Geer, 1776 | |
| Dasysyrphus venustus Meigen, 1822 | Transverse Conifer Fly |
| Didea (Didea) alneti Fallen, 1817 | |
| Didea fuscipes Loew, 1863 | Copper mallow |
| Didea pacifica (Lovett, 1919) | ⇒ Didea fuscipes Loew, 1863 |
| Doros aequalis Loew, 1863 | Canadian Potter Fly |
| Epistrophe (Epistrophe) grossulariae Meigen, 1882 | Black-Horned Smoothtail |
| Epistrophe (Epistrophe) nitidicollis Meigen, 1822 | |
| Epistrophe achrostoma Zetterstedt, 1849 | |
| Epistrophe emarginata Say, 1823 | |
| Epistrophe metcalfi Fluke, 1933 | |
| Epistrophe terminalis Curran, 1925 | |
| Epistrophe xanthostoma Williston, 1887 | Emarginate Smoothtail |
| Eriozona catalina Curran, 1930 | |
| Eriozona laxa Osten Sacken, 1875 | |
| Eristalinus (Eristalodes) taeniops Wiedemann, 1818 | Band-eyed drone fly |
| Eristalinus (Lathyrophthalmus) aeneus Scopoli, 1763 | Common Lagoon Fly |
| Eristalis (Eoseristalis) anthophorina Fallen, 1817 | Orange-Spotted Drone Fly |
| Eristalis (Eoseristalis) arbustorum Linnaeus, 1758 | European Drone Fly |
| Eristalis (Eoseristalis) bellardii Jaennicke, 1867 | Winkler cactus |
| Eristalis (Eoseristalis) cryptarum Fabricius, 1794 | Bog hoverfly |
| Eristalis (Eoseristalis) obscura Loew, 1866 | |
| Eristalis (Eoseristalis) oestracea Linnaeus, 1758 | |
| Eristalis (Eoseristalis) rupium Fabricius, 1805 | Hover fly |
| Eristalis (Eoseristalis) stipator Osten Sacken, 1877 | Yellow-Shouldered Drone Fly |
| Eristalis (Eoseristalis) tenax Linnaeus, 1758 | Common Drone Fly |
| Eristalis (Eoseristalis) transversa Wiedemann, 1830 | Transverse Flower Fly |
| Eristalis (Eristalis) hirta Loew, 1866 | |
| Eristalis anthophorinus Fallen, 1817 | |
| Eristalis barda Say, 1829 | |
| Eristalis basilaris Macquart, 1834 | White bryony |
| Eristalis beltrami (Telford, 1970) | ⇒ Eristalis obscura Loew, 1866 |
| Eristalis brousii Williston, 1882 | Whorled clustervine |
| Eristalis californicus (Nayar & Cole, 1968) | ⇒ Eristalis stipator Osten Sacken, 1877 |
| Eristalis compactus (Walker, 1849) | ⇒ Eristalis cryptarum Fabricius, 1794 |
| Eristalis dimidiatus Wiedemann, 1830 | |
| Eristalis everes (Walker, 1852) | ⇒ Eristalis anthophorina Fallen, 1817 |
| Eristalis hirtus (Loew, 1866) | ⇒ Eristalis hirta Loew, 1866 |
| Eristalis inflatus (Macquart, 1834) | ⇒ Palumbia inflata Macquart, 1834 |
| Eristalis obscurus (Loew, 1866) | ⇒ Eristalis obscura Loew, 1866 |
| Eristalis pilosus Loew, 1866 | |
| Eristalis saxorum Wiedemann, 1830 | Blue-Polished Drone Fly |
| Eristalis texanus (Hull, 1925) | ⇒ Palpada texana Hull, 1925 |
| Eristalis transversus (Wiedemann, 1830) | ⇒ Eristalis transversa Wiedemann, 1830 |
| Eristalis vandykei (Nayar & Cole, 1968) | ⇒ Eristalis obscura Loew, 1866 |
| Eumerus narcissi Smith, 1928 | Hover fly |
| Eumerus strigata Fallen, 1817 | |
| Eumerus tuberculatus Rondani, 1857 | Lesser bulb fly |
| Eupeodes (Eupeodes) latifasciatus Macquart, 1829 | Variable Aphideater |
| Eupeodes (Eupeodes) luniger Meigen, 1822 | |
| Eupeodes (Eupeodes) volucris Osten Sacken, 1877 | Bird Hover Fly |
| Eupeodes (Lapposyrphus) curtus Hine, 1922 | |
| Eupeodes (Lapposyrphus) nigroventris Fluke, 1933 | |
| Eupeodes (Metasyrphus) americanus Wiedemann, 1830 | American Hover Fly |
| Eupeodes (Metasyrphus) fumipennis Thomson, 1869 | |
| Eupeodes (Metasyrphus) snowi Wehr, 1922 | Brazilian nightshade |
| Eupeodes aberrantis Curran, 1925 | |
| Eupeodes canadensis Curran, 1926 | |
| Eupeodes confertus Fluke, 1952 | |
| Eupeodes flukei Jones, 1917 | |
| Eupeodes gentneri Fluke, 1952 | |
| Eupeodes lapponica Zetterstedt, 1838 | |
| Eupeodes lebanoensis Fluke, 1930 | |
| Eupeodes medius Jones, 1917 | |
| Eupeodes montanus Curran, 1925 | |
| Eupeodes montivagus Snow, 1895 | |
| Eupeodes neoperplexus Curran, 1925 | |
| Eupeodes ochrostoma Zetterstedt, 1849 | |
| Eupeodes perplexus Osburn, 1910 | |
| Eupeodes pingreensis Fluke, 1930 | |
| Eupeodes pomus Curran, 1921 | Short-Tailed Aphideater |
| Eupeodes rufipunctatus Curran, 1925 | |
| Eupeodes sculleni Fluke, 1952 | |
| Eupeodes subsimus Fluke, 1952 | |
| Eupeodes talus Fluke, 1933 | |
| Eupeodes venablesi Curran, 1929 | |
| Ferdinandea aenicolor Shannon, 1924 | |
| Ferdinandea buccata Loew, 1863 | |
| Ferdinandea croesus Osten Sacken, 1877 | |
| Ferdinandea dives Osten Sacken, 1877 | |
| Ferdinandea nigripes Osten Sacken, 1877 | |
| Hadromyia (Chrysosomidia) aldrichi Shannon, 1916 | |
| Hadromyia (Chrysosomidia) crawfordi Shannon, 1916 | |
| Hadromyia (Hadromyia) grandis Williston, 1882 | Whorled clustervine |
| Hadromyia aepalius Walker, 1849 | |
| Hadromyia opaca Shannon, 1916 | |
| Hadromyia pulcher Williston, 1882 | |
| Helophilus (Helophilus) affinis Wahlberg, 1844 | |
| Helophilus (Helophilus) bilinearis (Williston, 1887) | ⇒ Lejops bilinearis Williston, 1887 |
| Helophilus (Helophilus) bottnicus Wahlberg, 1844 | |
| Helophilus (Helophilus) fasciatus Walker, 1849 | Largeflower milkweed |
| Helophilus (Helophilus) groenlandicus Fabricius, 1780 | |
| Helophilus (Helophilus) hybridus Loew, 1846 | |
| Helophilus (Helophilus) intentus Curran & Fluke, 1926 | |
| Helophilus (Helophilus) lapponicus Wahlberg, 1844 | |
| Helophilus (Helophilus) latifrons (Loew, 1863) | ⇒ Helophilus hochstetteri Nowicki, 1875 |
| Helophilus (Helophilus) neoaffinis Fluke, 1949 | |
| Helophilus (Helophilus) obscurus Loew, 1863 | Copper mallow |
| Helophilus (Helophilus) pilosus Hunter, 1897 | Chinkapin |
| Helophilus (Pilinasica) hochstetteri Nowicki, 1875 | Metallic blue hoverfly |
| Helophilus alaskensis (Fluke, 1949) | ⇒ Helophilus bottnicus Wahlberg, 1844 |
| Helophilus anniae (Brimley, 1923) | ⇒ Parhelophilus flavifacies Bigot, 1883 |
| Helophilus borealis (Staeger, 1845) | ⇒ Helophilus affinis Wahlberg, 1844 |
| Helophilus brooksi Curran, 1927 | |
| Helophilus chrysostomus Wiedemann, 1830 | |
| Helophilus colei (Wirth, 1965) | ⇒ Lejops borealis Cole, 1921 |
| Helophilus cooleyi Seamans, 1917 | |
| Helophilus currani Fluke, 1953 | |
| Helophilus distinctus (Williston, 1887) | ⇒ Lejops distinctus Williston, 1887 |
| Helophilus divisus (Loew, 1863) | ⇒ Parhelophilus divisus Loew, 1863 |
| Helophilus flavifacies (Bigot, 1883) | ⇒ Parhelophilus flavifacies Bigot, 1883 |
| Helophilus frater Walker, 1849 | |
| Helophilus grisescens Hull, 1943 | |
| Helophilus integer (Loew, 1863) | ⇒ Parhelophilus integer Loew, 1963 |
| Helophilus laetus (Loew, 1863) | ⇒ Parhelophilus laetus Loew, 1963 |
| Helophilus lunulatus (Meigen, 1822) | ⇒ Anasimyia lunulata Meigen, 1822 |
| Helophilus obsoletus (Loew, 1863) | ⇒ Parhelophilus obsoletus Loew, 1863 |
| Helophilus orion Hull, 1943 | |
| Helophilus perfidiosus Hunter, 1897 | |
| Helophilus porcus Walker, 1849 | |
| Helophilus relictus Curran & Fluke, 1926 | |
| Helophilus rex Curran & Fluke, 1926 | |
| Helophilus stipatus (Walker, 1849) | ⇒ Lejops lineatus Fabricius, 1787 |
| Helophilus stricklandi (Curran, 1927) | ⇒ Helophilus bottnicus Wahlberg, 1844 |
| Heringia californica Davidson, 1917 | |
| Heringia canadensis Curran, 1921 | |
| Heringia comutata Curran, 1921 | |
| Heringia intensica Curran, 1921 | |
| Heringia salax Loew, 1866 | |
| Hiatomyia plumosa Coquillett, 1904 | |
| Lejops (Anasimyia) bilinearis Williston, 1887 | |
| Lejops (Anasimyia) lineatus Fabricius, 1787 | |
| Lejops borealis Cole, 1921 | |
| Lejops distinctus Williston, 1887 | |
| Lejops lunulatus Meigen, 1822 | |
| Lejota aerea Loew, 1872 | |
| Lejota cyanea Smith, 1912 | |
| Lepidomyia micheneri Fluke, 1953 | |
| Leucopodella marmorata Bigot, 1884 | |
| Leucozona (Ischyrosyrphus) xylotoides Johnson, 1916 | Eastern Hoary |
| Leucozona (Leucozona) lucorum Linnaeus, 1758 | Cornish mallow |
| Leucozona velutinus Williston, 1882 | |
| Mallota albipes Snow, 1895 | |
| Mallota albipilis (Snow, 1895) | ⇒ Mallota albipes Snow, 1895 |
| Mallota bautias Walker, 1849 | Bare-Eyed Bee-Mimic Fly |
| Mallota bequaerti Hull, 1956 | |
| Mallota bipartitus Walker, 1849 | |
| Mallota illinoensis (Robertson, 1901) | ⇒ Mallota albipes Snow, 1895 |
| Mallota mississippensis (Hull, 1946) | ⇒ Mallota albipes Snow, 1895 |
| Mallota palmerae (Jones, 1917) | ⇒ Mallota albipes Snow, 1895 |
| Mallota posticata Fabricius, 1805 | Hairy-Eyed Bee-Mimic Fly |
| Mallota posticatus Fabricius, 1805 | |
| Mallota powelli (Nayar & Cole, 1968) | ⇒ Sericomyia flagrans Osten-sacken, 1875 |
| Mallota sackeni Williston, 1882 | Whorled clustervine |
| Mallota separata (Hull, 1945) | ⇒ Mallota posticata Fabricius, 1805 |
| Melangyna (Melangyna) arctica Zetterstedt, 1838 | |
| Melangyna (Melangyna) coei Nielsen, 1971 | Cream stonecrop |
| Melangyna (Melangyna) fisherii Walton, 1911 | Large-Spotted Halfband |
| Melangyna (Melangyna) labiatarum Verrall, 1901 | |
| Melangyna (Melangyna) lasiophthalma Zetterstedt, 1843 | |
| Melangyna (Melangyna) umbellatarum Fabricius, 1794 | |
| Melangyna (Melangyna) vespertina Vockeroth, 1980 | |
| Melangyna (Meligramma) cincta (Fallen, 1817) | ⇒ Meligramma cincta Fallen, 1817 |
| Melangyna (Meligramma) guttata (Fallen, 1817) | ⇒ Meligramma guttata Fallen, 1817 |
| Melangyna (Meligramma) triangulifera (Zetterstedt, 1843) | ⇒ Meligramma triangulifera Zetterstedt, 1843 |
| Melangyna compositarus Verrall, 1873 | |
| Melangyna geniculatus Macquart, 1842 | |
| Melangyna maculifrons Bigot, 1884 | |
| Melangyna mediaconstricta Fluke, 1930 | |
| Melangyna nudifrons Curran, 1925 | |
| Melangyna subfasciatus Curran, 1925 | |
| Melanostoma ambigua Fallen, 1817 | |
| Melanostoma angustatum (Williston, 1887) | ⇒ Melanostoma mellinum Linnaeus, 1758 |
| Melanostoma bicruciata (Bigot, 1884) | ⇒ Melanostoma mellinum Linnaeus, 1758 |
| Melanostoma bicruciatum Bigot, 1884 | |
| Melanostoma dubia Zetterstedt, 1838 | |
| Melanostoma mellina Linnaeus, 1758 | Hover Fly |
| Melanostoma mellinum Linnaeus, 1758 | |
| Melanostoma parva Williston, 1882 | |
| Meligramma cincta Fallen, 1817 | |
| Meligramma guttata Fallen, 1817 | |
| Meligramma triangulifera Zetterstedt, 1843 | |
| Meliscaeva cinctella Zetterstedt, 1843 | American Thintail Fly |
| Merapioidus villosus Bigot, 1879 | |
| Merodon equestris Fabricius, 1794 | Greater Bulb-Fly |
| Meromacrus acuta Fabricius, 1805 | |
| Meromacrus draco Hull, 1942 | |
| Meromacrus gloriosus Hull, 1941 | Dwarf chinkapin oak |
| Meromacrus ruficrus Wiedemann, 1830 | |
| Microdon (Chymophila) fulgens Wiedemann, 1830 | Shortstalk false bindweed |
| Microdon (Dimeraspis) abditus Thompson, 1981 | |
| Microdon (Dimeraspis) globosus Fabricius, 1805 | |
| Microdon (Dimeraspis) marmoratum Bigot, 1883 | |
| Microdon (Microdon) aurulentus Fabricius, 1805 | |
| Microdon (Microdon) lanceolatus Adams, 1903 | |
| Microdon (Microdon) manitobensis Curran, 1924 | |
| Microdon (Microdon) megalogaster Snow, 1892 | Piper mistletoe |
| Microdon (Microdon) tristis Loew, 1864 | |
| Microdon abstrusus Thompson, 1981 | |
| Microdon adventitius Thompson, 1981 | |
| Microdon albicomatus Novak, 1977 | Merten's saxifrage |
| Microdon baliopterus Loew, 1872 | Juniper globemallow |
| Microdon carolae Capelle, 1956 | |
| Microdon coarctatus Loew, 1864 | |
| Microdon cothurnatum Bigot, 1883 | |
| Microdon craigheadii Walton, 1912 | |
| Microdon diversipilosus Curran, 1925 | |
| Microdon fuscipennis Macquart, 1834 | |
| Microdon laetoides Curran, 1935 | |
| Microdon laetus Loew, 1864 | |
| Microdon newcomeri Mann, 1924 | Gray poplar |
| Microdon ocellaris Curran, 1924 | |
| Microdon painteri Hull, 1922 | Mexican blue oak |
| Microdon pallipennis Curran, 1925 | |
| Microdon piperi Knab, 1917 | |
| Microdon ruficrus Williston, 1887 | Beach clustervine |
| Microdon rufipes Macquart, 1842 | |
| Microdon scutifer Knab, 1917 | |
| Microdon viridis Townsend, 1895 | California milkwort |
| Microdon xanthopilis Townsend, 1895 | Intermountain milkwort |
| Milesia bella Townsend, 1897 | Chapman's milkwort |
| Milesia scutellata Hull, 1924 | Organ oak |
| Milesia virginiensis Drury, 1773 | Virginia Flower Fly |
| Mixogaster breviventris Kahl, 1897 | Hairy schiedea |
| Mixogaster delongi Johnson, 1926 | |
| Mixogaster johnsoni Hull, 1941 | Dwarf chinkapin oak |
| Monoceromyia floridensis (Shannon, 1922) | ⇒ Ceriana floridensis Shannon, 1922 |
| Myolepta auricaudata Williston, 1891 | |
| Myolepta aurinota Hine, 1903 | |
| Myolepta camillae Weems, 1956 | Jerusalem cherry |
| Myolepta lunulata Bigot, 1883 | |
| Myolepta nigra Loew, 1872 | |
| Myolepta strigilata Loew, 1872 | |
| Myolepta varipes Loew, 1869 | |
| Nausigaster clara Curran, 1941 | |
| Nausigaster curvinervis Curran, 1941 | |
| Nausigaster geminata Townsend, 1897 | Chapman's milkwort |
| Nausigaster nova Curran, 1941 | |
| Nausigaster punctulata Williston, 1883 | |
| Nausigaster scutellaris Adams, 1904 | |
| Nausigaster texana Curran, 1941 | |
| Nausigaster unimaculata Townsend, 1897 | Chapman's milkwort |
| Neoascia (Neoasciella) distincta Williston, 1887 | Beach clustervine |
| Neoascia (Neoasciella) geniculata Meigen, 1822 | |
| Neoascia (Neoasciella) globosa Walker, 1849 | |
| Neoascia (Neoasciella) metallica Williston, 1882 | |
| Neoascia (Neoasciella) sphaerophoria Curran, 1925 | |
| Neoascia (Neoasciella) subchalybea Curran, 1925 | |
| Neoascia (Neoasciella) unifasciata (Curran, 1925) | ⇒ Neoascia willistoni Thompson, 1986 |
| Neoascia (Neoasciella) willistoni Thompson, 1986 | |
| Neoascia albipes Bigot, 1883 | |
| Neoascia conica (Curran, 1925) | ⇒ Neoascia geniculata Meigen, 1822 |
| Neoascia macrofemoralis (Curran, 1925) | ⇒ Neoascia geniculata Meigen, 1822 |
| Neoascia minuta (Curran, 1925) | ⇒ Neoascia metallica Williston, 1882 |
| Neocnemodon albipleura Cresson, 1921 | |
| Neocnemodon auripleura Curran, 1921 | |
| Neocnemodon calcarata Loew, 1866 | |
| Neocnemodon carinata Curran, 1921 | |
| Neocnemodon cevelata Curran, 1921 | |
| Neocnemodon corvallis Curran, 1921 | |
| Neocnemodon coxalis Curran, 1921 | |
| Neocnemodon elongata Curran, 1921 | |
| Neocnemodon intermedia Curran, 1921 | |
| Neocnemodon longiseta Curran, 1921 | |
| Neocnemodon lovetti Curran, 1921 | |
| Neocnemodon myerma Curran, 1921 | |
| Neocnemodon nigricornis Curran, 1922 | |
| Neocnemodon nudifrons Curran, 1921 | |
| Neocnemodon ontarioensis Curran, 1921 | |
| Neocnemodon pisticoides Williston, 1887 | |
| Neocnemodon placida Curran, 1921 | |
| Neocnemodon rita Curran, 1921 | |
| Neocnemodon sinuosa Curran, 1921 | |
| Neocnemodon squamulae Curran, 1921 | |
| Neocnemodon trochanterata Malloch, 1918 | |
| Neocnemodon unicolor Curran, 1921 | |
| Neocnemodon venteris Curran, 1921 | |
| Ocyptamus (Ocyptamus) antiphates Walker, 1849 | |
| Ocyptamus (Ocyptamus) dimidiatus Fabricius, 1781 | Richard's macromitrium moss |
| Ocyptamus (Ocyptamus) fuscipennis Say, 1823 | Dusky-Winged Hover Fly |
| Ocyptamus (Ocyptamus) gastrostactus Wiedemann, 1830 | |
| Ocyptamus (Orphnabaccha) jactator Loew, 1861 | |
| Ocyptamus (Pseudoscaeva) diversifasciatus Knab, 1914 | |
| Ocyptamus coerulea Williston, 1891 | |
| Ocyptamus costata Say, 1829 | |
| Ocyptamus cubana Hull, 1943 | |
| Ocyptamus fascipennis (Wiedemann, 1830) | ⇒ Ocyptamus fuscipennis Say, 1823 |
| Ocyptamus lemur Osten Sacken, 1877 | |
| Ocyptamus lineata Macquart, 1846 | |
| Ocyptamus loewi Sedman, 1965 | |
| Ocyptamus parvicornis Loew, 1861 | Elongated Hoverfly |
| Ornidia obesa Fabricius, 1775 | Syrphid fly |
| Ornidia obesus Fabricius, 1775 | |
| Orthonevra anniae Sedman, 1966 | |
| Orthonevra bellulus Williston, 1882 | |
| Orthonevra flukei Sedman, 1964 | |
| Orthonevra minuta Hull, 1945 | |
| Orthonevra nigrovittata Loew, 1876 | |
| Orthonevra nitidula Curran, 1925 | |
| Orthonevra nitidus Wiedemann, 1830 | |
| Orthonevra parva Shannon, 1916 | |
| Orthonevra pictipennis Loew, 1863 | |
| Orthonevra pulchella Williston, 1887 | |
| Orthonevra robusta Shannon, 1916 | |
| Orthonevra sonorensis Shannon, 1964 | |
| Orthonevra stigmata Williston, 1882 | |
| Orthonevra unicolor Shannon, 1916 | |
| Orthonevra weemsi Sedman, 1966 | |
| Palpada agrorum Fabricius, 1787 | |
| Palpada albifrons Wiedemann, 1830 | |
| Palpada furcata Wiedemann, 1819 | |
| Palpada mexicana Macquart, 1847 | |
| Palpada pusillus Macquart, 1842 | |
| Palpada rufiventris Macquart, 1846 | |
| Palpada scutellaris Fabricius, 1805 | |
| Palpada solennis Walker, 1849 | |
| Palpada testaceicornis Macquart, 1850 | |
| Palpada texana Hull, 1925 | |
| Palpada triangularis Giglio-Tos, 1892 | |
| Palpada vinetorum Fabricius, 1798 | |
| Palumbia inflata Macquart, 1834 | |
| Paragus (Pandasyophthalmus) haemorrhous Meigen, 1822 | |
| Paragus (Pandasyopthalmus) haemorrhous Meigen, 1822 | Western bog yellowcress |
| Paragus (Paragus) angustifrons Loew, 1863 | Copper mallow |
| Paragus (Paragus) bispinosus Vockeroth, 1986 | |
| Paragus (Paragus) cooverti Vockeroth, 1986 | |
| Paragus (Paragus) variabilis Vockeroth, 1986 | |
| Paragus angustistylus Vockeroth, 1986 | |
| Paragus arizonensis Vockeroth, 1986 | |
| Paragus longistylus Vockeroth, 1986 | |
| Parasyrphus bulbosus Fluke, 1954 | |
| Parasyrphus currani Fluke, 1935 | |
| Parasyrphus genualis Williston, 1887 | |
| Parasyrphus groenlandica Nielsen, 1910 | |
| Parasyrphus insolitus Osburn, 1908 | |
| Parasyrphus lineola (Zetterstedt, 1843) | ⇒ Parasyrphus lineolus Zetterstedt, 1843 |
| Parasyrphus lineolus Zetterstedt, 1843 | |
| Parasyrphus macularis Zetterstedt, 1843 | Hover fly |
| Parasyrphus nigritarsis Zetterstedt, 1843 | |
| Parasyrphus relicta Zetterstedt, 1838 | |
| Parasyrphus semiinterruptus Fluke, 1935 | |
| Parasyrphus tarsata Zetterstedt, 1838 | |
| Parhelophilus divisus Loew, 1863 | |
| Parhelophilus flavifacies Bigot, 1883 | |
| Parhelophilus integer Loew, 1963 | |
| Parhelophilus laetus Loew, 1963 | Common Bog Fly |
| Parhelophilus obsoletus Loew, 1863 | |
| Pelecocera apichaetus Curran, 1923 | |
| Pelecocera pergandei Williston, 1884 | |
| Pipiza atrata Curran, 1922 | |
| Pipiza crassipes Bigot, 1883 | |
| Pipiza davidsoni Curran, 1921 | |
| Pipiza distincta Curran, 1921 | |
| Pipiza femoralis Loew, 1866 | Scarlet globemallow |
| Pipiza grandifemoralis (Curran, 1921) | ⇒ Pipiza crassipes Bigot, 1883 |
| Pipiza latifrons (Curran, 1921) | ⇒ Pipiza davidsoni Curran, 1921 |
| Pipiza macrofemoralis Curran, 1921 | |
| Pipiza nigripilosa Williston, 1887 | Beach clustervine |
| Pipiza nigrotibiata (Curran, 1924) | ⇒ Pipiza puella Williston, 1887 |
| Pipiza oregona (Lovett, 1919) | ⇒ Pipiza crassipes Bigot, 1883 |
| Pipiza puella Williston, 1887 | Beach clustervine |
| Pipiza quadrimaculatus Panzer, 1804 | |
| Pipiza severnensis (Curran, 1921) | ⇒ Pipiza puella Williston, 1887 |
| Pipiza tricolor (Curran, 1921) | ⇒ Pipiza nigripilosa Williston, 1887 |
| Pipiza vanduzeei (Curran, 1921) | ⇒ Pipiza distincta Curran, 1921 |
| Platycheirus (Carposcalis) stegnus Say, 1829 | |
| Platycheirus (Platycheirus) aeratus Coquillett, 1900 | |
| Platycheirus (Platycheirus) albimanus Fabricius, 1781 | Pale-footed Hoverfly |
| Platycheirus (Platycheirus) amplus Curran, 1927 | |
| Platycheirus (Platycheirus) clypeatus Meigen, 1822 | |
| Platycheirus (Platycheirus) discimanus Loew, 1871 | Juniper globemallow |
| Platycheirus (Platycheirus) groenlandicus Curran, 1927 | |
| Platycheirus (Platycheirus) holarcticus Vockeroth, 1990 | |
| Platycheirus (Platycheirus) hyperboreus Staeger, 1845 | |
| Platycheirus (Platycheirus) jaerensis Nielsen, 1971 | |
| Platycheirus (Platycheirus) lundbecki Collin, 1931 | |
| Platycheirus (Platycheirus) manicatus Meigen, 1822 | |
| Platycheirus (Platycheirus) modestus Ide, 1926 | Angel trumpet |
| Platycheirus (Platycheirus) nielseni Vockeroth, 1990 | |
| Platycheirus (Platycheirus) nigrofemoratus Kanervo, 1934 | |
| Platycheirus (Platycheirus) obscurus Say, 1824 | |
| Platycheirus (Platycheirus) parmatus Rondani, 1857 | Aroma |
| Platycheirus (Platycheirus) perpallidus Verrall, 1901 | |
| Platycheirus (Platycheirus) scambus Staeger, 1843 | |
| Platycheirus (Platycheirus) scutatus Meigen, 1822 | |
| Platycheirus (Platycheirus) subordinatus Becker, 1915 | |
| Platycheirus (Platycheirus) urakawensis Matsumura, 1919 | |
| Platycheirus (Platycheirus) varipes Curran, 1923 | |
| Platycheirus (Pyrophaena) rosarum Fabricius, 1787 | |
| Platycheirus angustata Zetterstedt, 1843 | |
| Platycheirus atra Curran, 1925 | |
| Platycheirus carinata Curran, 1927 | |
| Platycheirus chilosia Curran, 1922 | |
| Platycheirus ciliatus Bigot, 1884 | |
| Platycheirus coerulescens Williston, 1887 | |
| Platycheirus concinnum Snow, 1895 | |
| Platycheirus confusum Curran, 1925 | |
| Platycheirus coracinus Vockeroth, 1990 | |
| Platycheirus femineus Curran, 1931 | |
| Platycheirus flabella Hull, 1944 | Pungent oak |
| Platycheirus granditarsa Forster, 1771 | |
| Platycheirus hesperius Vockeroth, 1990 | |
| Platycheirus hispidipes Vockeroth, 1990 | |
| Platycheirus immarginata Zetterstedt, 1849 | |
| Platycheirus inversus Ide, 1926 | Angel trumpet |
| Platycheirus kelloggi Snow, 1895 | |
| Platycheirus lata Curran, 1922 | |
| Platycheirus latitarsis Vockeroth, 1990 | |
| Platycheirus luteipennis Curran, 1925 | |
| Platycheirus monticola Jones, 1917 | Cone catchfly |
| Platycheirus naso Walker, 1849 | |
| Platycheirus nearcticus Vockeroth, 1990 | |
| Platycheirus nodosus Curran, 1923 | |
| Platycheirus normae Fluke, 1939 | |
| Platycheirus occidentalis (Curran, 1927) | ⇒ Platycheirus aeratus Coquillett, 1900 |
| Platycheirus octavus Vockeroth, 1990 | |
| Platycheirus orarius Vockeroth, 1990 | |
| Platycheirus oreadis Vockeroth, 1990 | |
| Platycheirus pacilus Walker, 1852 | |
| Platycheirus peltatoides Curran, 1923 | |
| Platycheirus pilatus Vockeroth, 1990 | |
| Platycheirus podagrata Zetterstedt, 1838 | |
| Platycheirus protrusus Vockeroth, 1990 | |
| Platycheirus pullatus Vockeroth, 1990 | |
| Platycheirus quadrata Say, 1823 | |
| Platycheirus rufigaster Vockeroth, 1990 | |
| Platycheirus rufimaculatus Vockeroth, 1990 | |
| Platycheirus russatus Vockeroth, 1990 | |
| Platycheirus sabulicola Vockeroth, 1990 | |
| Platycheirus scamboides Curran, 1927 | |
| Platycheirus setipes Vockeroth, 1990 | |
| Platycheirus setitarsis Vockeroth, 1990 | |
| Platycheirus spinipes Vockeroth, 1990 | |
| Platycheirus squamulae Curran, 1922 | |
| Platycheirus stegnoides Vockeroth, 1990 | |
| Platycheirus striatus Vockeroth, 1990 | |
| Platycheirus tenebrosus Coquillett, 1900 | |
| Platycheirus thompsoni Vockeroth, 1990 | |
| Platycheirus thylax Hull, 1944 | Pungent oak |
| Platycheirus trichopus Thomson, 1869 | |
| Platycheirus willistoni Sedman, 1965 | |
| Platycheirus woodi Vockeroth, 1990 | |
| Platycheirus yukonensis Vockeroth, 1990 | |
| Pocota bomboides Hunter, 1897 | Chinkapin |
| Polybiomyia bellardii (Shannon, 1925) | ⇒ Ceriana bellardii Shannon, 1925 |
| Polybiomyia capitis (Curran, 1925) | ⇒ Ceriana signifera Loew, 1853 |
| Polybiomyia engelhardti (Shannon, 1925) | ⇒ Ceriana engelhardti Shannon, 1925 |
| Polybiomyia festiva (Hull, 1930) | ⇒ Ceriana townsendi Snow, 1895 |
| Polybiomyia macquarti (Shannon, 1925) | ⇒ Ceriana macquarti Shannon, 1925 |
| Polybiomyia pedicellata Williston, 1887 | |
| Polybiomyia reinhardi (Hull, 1930) | ⇒ Ceriana bellardii Shannon, 1925 |
| Polybiomyia sayi (Shannon, 1925) | ⇒ Ceriana sayi Shannon, 1925 |
| Polybiomyia townsendi Snow, 1895 | |
| Polydontomyia curvipes Wiedemann, 1830 | |
| Pseudodoros clavatus Fabricius, 1794 | |
| Psilota buccata Macquart, 1842 | |
| Psilota flavidipennis Macquart, 1855 | Bur gherkin |
| Psilota thatuna Shannon, 1922 | Heartleaf suncup |
| Pterallastes thoracicus Loew, 1863 | Copper mallow |
| Pyritis kincaidii Coquillett, 1895 | |
| Pyritis montigena (Hunter, 1897) | ⇒ Pyritis kincaidii Coquillett, 1895 |
| Rhingia nasica Say, 1823 | American Snout Fly |
| Salpingogaster cochenillivorus Guérin-Ménev..., 1848 | |
| Salpingogaster nepenthe Hull, 1943 | |
| Salpingogaster punctifrons Curran, 1929 | |
| Salpingogaster texana (Curran, 1932) | ⇒ Salpingogaster cochenillivorus Guérin-Ménev..., 1848 |
| Scaeva pyrastri Linnaeus, 1758 | |
| Sericomyia (Sericomyia) bifasciata Williston, 1887 | Beach clustervine |
| Sericomyia (Sericomyia) chalcopyga Loew, 1863 | Copper mallow |
| Sericomyia (Sericomyia) chrysotoxoides Macquart, 1842 | Mountain melonleaf |
| Sericomyia (Sericomyia) flagrans Osten-sacken, 1875 | |
| Sericomyia (Sericomyia) lata Coquillett, 1907 | White-Spotted Pond Fly |
| Sericomyia (Sericomyia) militaris Walker, 1849 | Largeflower milkweed |
| Sericomyia (Sericomyia) sexfasciata Walker, 1849 | Largeflower milkweed |
| Sericomyia (Sericomyia) transversa Osburn, 1926 | |
| Sericomyia arctica Schirmer, 1913 | Erect seaberry |
| Sericomyia carolinensis Metcalf, 1917 | |
| Sericomyia cynocephala (Hine, 1922) | ⇒ Sericomyia tolli Frey, 1915 |
| Sericomyia harveyi Osburn, 1908 | |
| Sericomyia slossonae Curran, 1934 | |
| Sericomyia tolli Frey, 1915 | |
| Somula decora Macquart, 1847 | Spotted Wood Fly |
| Somula mississippiensis Hull, 1922 | Mexican blue oak |
| Sphaerophoria abbreviata Zetterstedt, 1859 | Nuttall's desert-trumpets |
| Sphaerophoria asymmetrica Knutson, 1973 | Watson's amaranth |
| Sphaerophoria bifurcata Knutson, 1973 | Watson's amaranth |
| Sphaerophoria brevipilosa Knutson, 1973 | Watson's amaranth |
| Sphaerophoria cleoae Metcalf, 1917 | Rocky Mountain bladderpod |
| Sphaerophoria contigua (Macquart, 1847) | ⇒ Sphaerophoria cylindrica Say, 1824 |
| Sphaerophoria contiqua Macquart, 1847 | Watermelon |
| Sphaerophoria cranbrookensis Curran, 1921 | |
| Sphaerophoria cylindrica Say, 1824 | |
| Sphaerophoria interrupta Jones, 1917 | |
| Sphaerophoria longipilosa Knutson, 1973 | Watson's amaranth |
| Sphaerophoria menthastri (Linnaeus, 1758) | ⇒ Sphaerophoria interrupta Jones, 1917 |
| Sphaerophoria nigricauda (Metcalf, 1913) | ⇒ Sphaerophoria contiqua Macquart, 1847 |
| Sphaerophoria novaeangliae Johnson, 1916 | Godfrey's stitchwort |
| Sphaerophoria philanthus Meigen, 1822 | |
| Sphaerophoria pyrrhina Bigot, 1884 | |
| Sphaerophoria scripta Linnaeus, 1758 | Hover Fly |
| Sphaerophoria sulphuripes Thomson, 1869 | |
| Sphaerophoria weemsi Knutson, 1973 | Watson's amaranth |
| Sphecomyia brevicornis Osten Sacken, 1877 | |
| Sphecomyia columbiana Vockeroth, 1965 | Mt. Graham spurred gentian |
| Sphecomyia cryptica Moran, 2019 | |
| Sphecomyia dyari Shannon, 1925 | Beach suncup |
| Sphecomyia fusca Weisman, 1964 | Riedle's nightshade |
| Sphecomyia nasica Osburn, 1908 | Kanawao |
| Sphecomyia occidentalis Osburn, 1908 | Kanawao |
| Sphecomyia oraria Moran, 2019 | |
| Sphecomyia pattonii Williston, 1882 | Whorled clustervine |
| Sphecomyia vittatum Wiedemann, 1830 | |
| Sphecomyia weismani Moran, 2019 | |
| Sphegina (Asiosphegina) notata (Hull, 1935) | ⇒ Sphegina flavomaculata Malloch, 1922 |
| Sphegina (Sphegina) albipes Bigot, 1883 | |
| Sphegina (Sphegina) spheginea Zetterstedt, 1838 | |
| Sphegina appalachiensis Coovert, 1977 | |
| Sphegina armatipes Malloch, 1922 | |
| Sphegina biannulata Malloch, 1922 | |
| Sphegina brachygaster Hull, 1935 | Thick-Waisted Hammertail |
| Sphegina bridwelli Cole, 1924 | |
| Sphegina californica Malloch, 1922 | |
| Sphegina campanulata Robertson, 1901 | Knotted clover |
| Sphegina cressoni (Hull, 1935) | ⇒ Sphegina bridwelli Cole, 1924 |
| Sphegina flavimana Malloch, 1922 | |
| Sphegina flavomaculata Malloch, 1922 | |
| Sphegina infuscata Loew, 1863 | Copper mallow |
| Sphegina keeniana Williston, 1887 | Beach clustervine |
| Sphegina lobata Loew, 1863 | Copper mallow |
| Sphegina lobulifera Malloch, 1922 | Black-Lobed Pufftail |
| Sphegina melanderi (Cole, 1924) | ⇒ Sphegina albipes Bigot, 1883 |
| Sphegina nigrimana Cole, 1924 | |
| Sphegina occidentalis Malloch, 1922 | |
| Sphegina petiolata Coquillett, 1910 | |
| Sphegina punctata Cole, 1921 | |
| Sphegina rufiventris (Loew, 1863) | ⇒ Sphegina spheginea Zetterstedt, 1838 |
| Sphegina vittata Cole, 1924 | |
| Sphiximorpha abdominalis Curran, 1925 | |
| Sphiximorpha aldrichi Hull, 1935 | |
| Sphiximorpha cylindrica Curran, 1921 | |
| Sphiximorpha durani Shannon, 1925 | |
| Sphiximorpha loewii Williston, 1887 | |
| Sphiximorpha ontarioensis Curran, 1921 | |
| Sphiximorpha schnablei Williston, 1892 | |
| Sphiximorpha signifera Loew, 1853 | |
| Spilomyia alcimus Walker, 1849 | Broad-Banded Hornet Fly |
| Spilomyia banksi (Nayar & Cole, 1968) | ⇒ Spilomyia longicornis Loew, 1872 |
| Spilomyia citima Vockeroth, 1958 | Lesser fringed gentian |
| Spilomyia crandalli Curran, 1951 | |
| Spilomyia foxleei Vockeroth, 1958 | Lesser fringed gentian |
| Spilomyia fusca Loew, 1864 | Bald-Faced Hornet Fly |
| Spilomyia interrupta Williston, 1882 | Whorled clustervine |
| Spilomyia kahli Snow, 1895 | |
| Spilomyia liturata Williston, 1887 | Beach clustervine |
| Spilomyia longicornis Loew, 1872 | Eastern Hornet Fly |
| Spilomyia oregonensis (Nayar & Cole, 1968) | ⇒ Spilomyia citima Vockeroth, 1958 |
| Spilomyia sayi Goot, 1964 | Four-Lined Hornet Fly |
| Spilomyia texana (Johnson, 1921) | ⇒ Spilomyia alcimus Walker, 1849 |
| Stackelbergina praeclara Shilova & Ze..., 1978 | |
| Syritta flaviventris Macquart, 1842 | Mountain melonleaf |
| Syritta pipiens Linnaeus, 1758 | Hover Fly |
| Syrphus attenuatus Hine, 1922 | Mexican prickly poppy |
| Syrphus concava Say, 1823 | |
| Syrphus currani Fluke, 1939 | |
| Syrphus intricatus Vockeroth, 1983 | |
| Syrphus knabi Shannon, 1916 | Eastern Flower Fly |
| Syrphus monoculus Swederus, 1787 | |
| Syrphus opinator Osten Sacken, 1877 | |
| Syrphus rectus Osten Sacken, 1875 | Yellow-Legged Flower Fly |
| Syrphus ribesii Linnaeus, 1758 | Common Flower Fly |
| Syrphus sexmaculatus Zetterstedt, 1838 | |
| Syrphus sonorensis Vockeroth, 1983 | |
| Syrphus torvus Osten Sacken, 1875 | Hairy-eyed flower fly |
| Syrphus vitripennis Meigen, 1822 | Western bog yellowcress |
| Temnostoma acrum Curran, 1939 | |
| Temnostoma alternans Loew, 1864 | Wasp-Like Falsehorn |
| Temnostoma balyras Walker, 1849 | Yellow-Haired Falsehorn |
| Temnostoma barberi Shannon, 1939 | Bare-Bellied Falsehorn |
| Temnostoma daochus Walker, 1849 | |
| Temnostoma excentrica Harris, 1862 | |
| Temnostoma obscurum Loew, 1864 | |
| Temnostoma trifasciatum Robertson, 1901 | |
| Temnostoma venustum Williston, 1887 | Beach clustervine |
| Temnostoma vespiformis Linnaeus, 1758 | |
| Teuchocnemis bacuntius Walker, 1849 | |
| Teuchocnemis lituratus Loew, 1863 | |
| Toxomerus arethusa Hull, 1945 | |
| Toxomerus basilaris Wiedemann, 1830 | |
| Toxomerus boscii Macquart, 1842 | Mountain melonleaf |
| Toxomerus coalescens Walker, 1852 | |
| Toxomerus corbis Walker, 1852 | |
| Toxomerus floralis Fabricius, 1798 | |
| Toxomerus geminata Say, 1823 | |
| Toxomerus jussiaeae Vige, 1939 | Charming centaury |
| Toxomerus marginata Say, 1823 | |
| Toxomerus occidentalis Curran, 1922 | |
| Toxomerus parvula Loew, 1866 | |
| Toxomerus planiventris Loew, 1866 | |
| Toxomerus polita Say, 1823 | |
| Toxomerus slossonae Curran, 1930 | |
| Toxomerus teligera Fluke, 1953 | |
| Toxomerus triradiata Hull, 1942 | |
| Trichopsomyia apisaon Walker, 1849 | Largeflower milkweed |
| Trichopsomyia australis Johnson, 1907 | |
| Trichopsomyia banksi Curran, 1921 | |
| Trichopsomyia nigritarsis Curran, 1924 | |
| Trichopsomyia occidentalis Townsend, 1897 | |
| Trichopsomyia pubescens Loew, 1863 | |
| Trichopsomyia recedens Walker, 1852 | |
| Trichopsomyia rufithoracica Curran, 1921 | |
| Trichopsomyia similis Curran, 1924 | |
| Tropidia albistylum Macquart, 1847 | Watermelon |
| Tropidia calcarata Williston, 1887 | Beach clustervine |
| Tropidia coloradensis Bigot, 1883 | |
| Tropidia incana Townsend, 1895 | California milkwort |
| Tropidia mamillata Loew, 1861 | |
| Tropidia montana Hunter, 1896 | Allegheny chinkapin |
| Tropidia pygmaea Shannon, 1926 | Beach suncup |
| Tropidia quadrata Say, 1824 | Common Thick-Legged Fly |
| Volucella abdominalis (Wiedemann, 1830) | ⇒ Copestylum abdominale Wiedemann, 1830 |
| Volucella anastasia (Hull, 1946) | ⇒ Copestylum anastasia Hull, 1946 |
| Volucella anna (Williston, 1887) | ⇒ Copestylum anna Williston, 1887 |
| Volucella apicalis (Loew, 1866) | ⇒ Copestylum apicale Loew, 1866 |
| Volucella apicifera (Townsend, 1895) | ⇒ Copestylum apiciferum Townsend, 1895 |
| Volucella avida (Osten Sacken, 1877) | ⇒ Copestylum avidum Osten Sacken, 1877 |
| Volucella barei (Curran, 1925) | ⇒ Copestylum barei Curran, 1925 |
| Volucella bombylans Linnaeus, 1758 | Bumble Bee Hover Fly |
| Volucella comstocki (Williston, 1887) | ⇒ Copestylum comstocki Williston, 1887 |
| Volucella eugenia (Williston, 1887) | ⇒ Copestylum eugenia Williston, 1887 |
| Volucella florida (Hull, 1941) | ⇒ Copestylum florida Hull, 1941 |
| Volucella fraudulenta (Williston, 1891) | ⇒ Copestylum fraudulentum Williston, 1891 |
| Volucella haagii (Jaennicke, 1867) | ⇒ Copestylum haagii Jaennicke, 1867 |
| Volucella isabellina (Williston, 1887) | ⇒ Copestylum isabellina Williston, 1887 |
| Volucella lutzi (Curran, 1930) | ⇒ Copestylum avidum Osten Sacken, 1877 |
| Volucella macrocephala Giglio-Tos, 1892 | |
| Volucella megacephala Loew, 1863 | |
| Volucella mexicana (Macquart, 1842) | ⇒ Copestylum mexicanum Macquart, 1842 |
| Volucella nigra (Greene, 1923) | ⇒ Copestylum mexicanum Macquart, 1842 |
| Volucella opalescens (Townsend, 1901) | ⇒ Copestylum opalescens Townsend, 1901 |
| Volucella pallens (Wiedemann, 1830) | ⇒ Copestylum pallens Wiedemann, 1830 |
| Volucella postica (Say, 1829) | ⇒ Copestylum posticum Say, 1829 |
| Volucella pusilla (Macquart, 1842) | ⇒ Copestylum pusillum Macquart, 1842 |
| Volucella quadrata (Williston, 1891) | ⇒ Copestylum quadratum Williston, 1891 |
| Volucella satur (Osten Sacken, 1877) | ⇒ Copestylum satur Osten Sacken, 1877 |
| Volucella sternalis (Curran, 1930) | ⇒ Copestylum sternale Curran, 1930 |
| Volucella tamaulipana (Townsend, 1898) | ⇒ Copestylum tamaulipanum Townsend, 1898 |
| Volucella tau (Bigot, 1883) | ⇒ Copestylum satur Osten Sacken, 1877 |
| Volucella tricincta (Bigot, 1875) | ⇒ Eristalis arbustorum Linnaeus, 1758 |
| Volucella unipunctata (Curran, 1926) | ⇒ Copestylum vacuum Fabricius, 1775 |
| Volucella vesiculana (Curran, 1947) | ⇒ Copestylum opalescens Townsend, 1901 |
| Volucella vesicularia (Curran, 1947) | ⇒ Copestylum vesicularium Curran, 1947 |
| Volucella victoria (Williston, 1887) | ⇒ Copestylum victoria Williston, 1887 |
| Xanthandrus mexicanus Curran, 1930 | |
| Xanthogramma flavipes Loew, 1863 | American Harlequin |
| Xylota (Ameroxylota) barbata Loew, 1864 | |
| Xylota (Ameroxylota) ejuncida Say, 1824 | |
| Xylota (Ameroxylota) flavitibia Bigot, 1883 | |
| Xylota (Ameroxylota) flukei Curran, 1941 | |
| Xylota (Ameroxylota) segnis Linnaeus, 1758 | Brown-Toed Forest Fly |
| Xylota (Xylota) annulifera Bigot, 1883 | |
| Xylota (Xylota) quadrimaculata Loew, 1866 | Scarlet globemallow |
| Xylota analis Williston, 1887 | Beach clustervine |
| Xylota angustiventris Loew, 1866 | Scarlet globemallow |
| Xylota argoi Shannon, 1926 | Beach suncup |
| Xylota artemita (Hull, 1943) | ⇒ Xylota quadrimaculata Loew, 1866 |
| Xylota atlantica (Shannon, 1926) | ⇒ Xylota naknek Shannon, 1926 |
| Xylota bicolor Loew, 1864 | |
| Xylota bigelowi Curran, 1941 | |
| Xylota confusa Shannon, 1926 | Beach suncup |
| Xylota flavifrons Walker, 1849 | Largeflower milkweed |
| Xylota hinei Curran, 1941 | |
| Xylota lovetti Curran, 1925 | |
| Xylota micrurus Curran, 1941 | |
| Xylota mixtus Curran, 1941 | |
| Xylota naknek Shannon, 1926 | Beach suncup |
| Xylota nebulosa Johnson, 1921 | Michaux's stitchwort |
| Xylota notha (Williston, 1887) | ⇒ Xylota subfasciata Loew, 1866 |
| Xylota ouelleti Curran, 1941 | |
| Xylota rainieri (Shannon, 1926) | ⇒ Xylota analis Williston, 1887 |
| Xylota scutellarmata Lovett, 1919 | Frog's-britches |
| Xylota stigmatipennis (Lovett, 1919) | ⇒ Myolepta lunulata Bigot, 1883 |
| Xylota subfasciata Loew, 1866 | Scarlet globemallow |
| Xylota tuberculatus Curran, 1941 | |
