| Allograpta (Allograpta) obliqua Say, 1823 | Common Oblique Syrphid |
| Anevrina curvinervis Becker, 1901 | |
| Anevrina luggeri Aldrich, 1892 | |
| Anevrina macateei Malloch, 1913 | |
| Anevrina thoracica Meigen, 1804 | |
| Apocephalus (Mesophora) borealis Brues, 1924 | Zombie flies |
| Apocephalus antennatus Malloch, 1913 | |
| Apocephalus asyndetus Brown, 2000 | |
| Apocephalus pergandei Coquillett, 1901 | |
| Baccha elongata Fabricius, 1775 | Common Dainty |
| Baccha sphegina (Meigen, 1822) | ⇒ Baccha elongata Fabricius, 1775 |
| Bertamyia notata Loew, 1866 | |
| Blera confusa Johnson, 1913 | Confusing Wood Fly |
| Borophaga clavata Loew, 1866 | |
| Borophaga subsultans Linnaeus, 1766 | |
| Brachyopa caesariata Moran & Skev..., 2019 | |
| Brachyopa cummingi Moran & Skev..., 2019 | |
| Brachyopa diversa Johnson, 1917 | Greenland stitchwort |
| Brachyopa punctipennis Curran, 1925 | |
| Brachypalpus (Brachypalpus) oarus Walker, 1849 | Eastern Catkin Fly |
| Calotarsa pallipes Loew, 1866 | |
| Ceriana abbreviata Loew, 1864 | Northern Wasp Fly |
| Chaetopleurophora atra Borgmeier, 1962 | |
| Chaetopleurophora erythronota Strobl, 1892 | |
| Chaetopleurophora pennsylvanica Malloch, 1914 | |
| Chaetopleurophora rubricornis Borgmeier, 1962 | |
| Chalarus decorus Jervis, 1992 | |
| Chalcosyrphus (Xylotina) nemorum Fabricius, 1805 | Dusky-Banded Forest Fly |
| Chalcosyrphus (Xylotodes) piger Fabricius, 1794 | Short-Haired Leafwalker |
| Chalcosyrphus (Xylotomima) libo Walker, 1849 | Long-Haired Forest Fly |
| Chalcosyrphus anthreas Walker, 1849 | |
| Chalcosyrphus chlorops Hull, 1948 | |
| Cheilosia (Convocheila) hypena Becker, 1894 | |
| Cheilosia (Convocheila) pagana Meigen, 1822 | Hover fly |
| Cheilosia aenea Scopoli, 1763 | |
| Cheilosia latrans Walker, 1849 | |
| Cheilosia leucoparea Loew, 1863 | |
| Cheilosia nigrofasciata Curran, 1926 | |
| Cheilosia pontiaca Shannon, 1922 | |
| Cheilosia prima Hunter, 1896 | |
| Cheilosia shannoni Curran, 1923 | |
| Chrysotoxum fasciolatum (De Geer, 1776) | ⇒ Chrysotoxum cautum Harris, 1776 |
| Chrysotoxum flavifrons Macquart, 1842 | Mountain melonleaf |
| Clistoabdominalis condylostylus Skevington, 2001 | |
| Conicera dauci Meigen, 1830 | |
| Conicera similis (Haliday, 1833) | ⇒ Conicera tibialis Schmitz, 1925 |
| Criorhina nigripes Williston, 1882 | |
| Dasysyrphus intrudens Osten Sacken, 1877 | |
| Dasysyrphus pauxillus Williston, 1887 | Montane Conifer Fly |
| Dasysyrphus venustus Meigen, 1822 | Transverse Conifer Fly |
| Didea (Didea) fasciata Macquart, 1834 | |
| Diplonevra nitidula (Meigen, 1830) | ⇒ Diplonevra funebris Meigen, 1830 |
| Dohrniphora cornuta Bigot, 1857 | Hump-backed fly |
| Dohrniphora incisuralis Loew, 1866 | |
| Doros aequalis Loew, 1863 | Canadian Potter Fly |
| Dorylomorpha (Dorylomyza) albitarsis Zetterstedt, 1844 | |
| Dorylomorpha atramontensis Banks, 1911 | |
| Epistrophe (Epistrophe) grossulariae Meigen, 1882 | Black-Horned Smoothtail |
| Epistrophe xanthostoma Williston, 1887 | Emarginate Smoothtail |
| Episyrphus (Episyrphus) balteatus Geer, 1776 | Marmalade Fly |
| Eristalis (Eoseristalis) arbustorum Linnaeus, 1758 | European Drone Fly |
| Eristalis (Eoseristalis) dimidiata (Wiedemann, 1830) | ⇒ Cheilosia fraterna Meigen, 1830 |
| Eristalis (Eoseristalis) flavipes (Walker, 1849) | ⇒ Eristalis barda Say, 1829 |
| Eristalis (Eoseristalis) interrupta Poda, 1761 | |
| Eristalis (Eoseristalis) obscura Loew, 1866 | |
| Eristalis (Eoseristalis) pertinax Scopoli, 1763 | |
| Eristalis (Eoseristalis) rupium Fabricius, 1805 | Hover fly |
| Eristalis (Eoseristalis) tenax Linnaeus, 1758 | Common Drone Fly |
| Eristalis (Eoseristalis) transversa Wiedemann, 1830 | Transverse Flower Fly |
| Eristalis bardus Say, 1829 | |
| Eumerus funeralis (Meigen, 1822) | ⇒ Eumerus strigata Fallen, 1817 |
| Eumerus strigatus Fallen, 1817 | Hover fly |
| Eupeodes (Eupeodes) latifasciatus Macquart, 1829 | Variable Aphideater |
| Eupeodes (Eupeodes) luniger Meigen, 1822 | |
| Eupeodes (Eupeodes) volucris Osten Sacken, 1877 | Bird Hover Fly |
| Eupeodes (Metasyrphus) americanus Wiedemann, 1830 | American Hover Fly |
| Ferdinandea buccata Loew, 1863 | |
| Gymnophora fastigiorum Schmitz, 1952 | |
| Gymnophora luteiventris Schmitz, 1952 | |
| Gymnophora subarcuata Schmitz, 1952 | |
| Hammerschmidtia sedmani Vockeroth, M..., 2019 | |
| Helophilus (Helophilus) fasciatus Walker, 1849 | Largeflower milkweed |
| Helophilus (Helophilus) groenlandicus Fabricius, 1780 | |
| Helophilus (Helophilus) hybridus Loew, 1846 | |
| Helophilus (Helophilus) latifrons (Loew, 1863) | ⇒ Helophilus hochstetteri Nowicki, 1875 |
| Helophilus (Helophilus) obscurus Loew, 1863 | Copper mallow |
| Helophilus (Helophilus) pendulus Linnaeus, 1758 | |
| Hypocera mordellaria Fallen, 1823 | |
| Lecanocerus compressiceps Borgmeier, 1962 | |
| Lejogaster (Liogaster) metallina Fabricius, 1781 | |
| Lejops (Anasimyia) lineatus Fabricius, 1787 | |
| Lejota aerea Loew, 1872 | |
| Leucozona (Leucozona) lucorum Linnaeus, 1758 | Cornish mallow |
| Mallota florea Linnaeus, 1758 | |
| Megaselia albicaudata Wood, 1910 | |
| Megaselia arcticae Disney, 2004 | |
| Megaselia aristalis Malloch, 1914 | |
| Megaselia citrinella Buck & Disney, 2001 | |
| Megaselia diversa Wood, 1909 | |
| Megaselia eccoptomera Schmitz, 1927 | Variableleaf false ohelo |
| Megaselia fungivora (Wood, 1909) | ⇒ Megaselia frameata Schmitz, 1927 |
| Megaselia halterata Wood, 1910 | Mushroom fly |
| Megaselia hirtiventris Wood, 1909 | |
| Megaselia lucifrons Schmitz, 1918 | |
| Megaselia nigriceps Loew, 1866 | |
| Megaselia perplexa Malloch, 1912 | |
| Megaselia plebeia Malloch, 1914 | |
| Megaselia pleuralis Wood, 1909 | |
| Megaselia rufipes Meigen, 1804 | Coffin fly |
| Megaselia spinigera Wood, 1908 | |
| Megaselia subpalpalis Lundbeck, 1920 | |
| Megaselia sulphurizona Borgmeier, 1966 | |
| Megaselia ursina Malloch, 1912 | |
| Megaselia variana Schmitz, 1926 | |
| Megaselia winnemana Malloch, 1912 | |
| Megograpta marginata Say, 0 | Syrphid fly |
| Melaloncha cordyla Brown, 2006 | |
| Melaloncha diastata Brown, 2006 | |
| Melangyna (Melangyna) lasiophthalma Zetterstedt, 1843 | |
| Melangyna (Melangyna) umbellatarum Fabricius, 1794 | |
| Melangyna (Meligramma) triangulifera (Zetterstedt, 1843) | ⇒ Meligramma triangulifera Zetterstedt, 1843 |
| Melanostoma mellinum Linnaeus, 1758 | |
| Melanostoma scalare (Fabricius, 1794) | ⇒ Melanostoma fasciatum Macquart, 1850 |
| Meliscaeva cinctella Zetterstedt, 1843 | American Thintail Fly |
| Merodon equestris Fabricius, 1794 | Greater Bulb-Fly |
| Milesia tachina (Yang & Cheng, 1998) | ⇒ Milesia cretosa Hippa, 1990 |
| Milesia virginiensis Drury, 1773 | Virginia Flower Fly |
| Myolepta nigra Loew, 1872 | |
| Myriophora borealis Hash & Brown, 2015 | |
| Myriophora juli Brues, 1908 | |
| Neoascia (Neoascia) podagrica Fabricius, 1775 | |
| Neoascia (Neoasciella) distincta Williston, 1887 | Beach clustervine |
| Neoascia (Neoasciella) globosa Walker, 1849 | |
| Neoascia (Neoasciella) metallica Williston, 1882 | |
| Neoascia (Neoasciella) sphaerophoria Curran, 1925 | |
| Ocyptamus (Ocyptamus) fuscipennis Say, 1823 | Dusky-Winged Hover Fly |
| Paragus (Pandasyopthalmus) haemorrhous Meigen, 1822 | Western bog yellowcress |
| Parhelophilus laetus Loew, 1963 | Common Bog Fly |
| Phalacrotophora epeirae Brues, 1902 | |
| Phalacrotophora longifrons Brues, 1906 | |
| Phora aerea Schmitz, 1930 | Hillside false ohelo |
| Phora atra (Meigen, 1804) | ⇒ Diplonevra funebris Meigen, 1830 |
| Phora carlina Schmitz, 1930 | Hillside false ohelo |
| Pipiza quadrimaculata Panzer, 1804 | Four-Spotted Pipiza |
| Pipunculus aterater Meigen, 1824 | |
| Pipunculus hertzogi (Rapp, 1943) | ⇒ Pipunculus aterater Meigen, 1824 |
| Pipunculus horvathi (Kertesz, 1907) | ⇒ Pipunculus aterater Meigen, 1824 |
| Pipunculus luteicornis (Cresson, 1911) | ⇒ Pipunculus fuscus Loew, 1866 |
| Platycheirus (Platycheirus) angustatus Zetterstedt, 1843 | |
| Platycheirus (Platycheirus) clypeatus Meigen, 1822 | |
| Platycheirus (Platycheirus) hyperboreus Staeger, 1845 | |
| Platycheirus (Platycheirus) immarginatus Zetterstedt, 1849 | |
| Platycheirus (Platycheirus) modestus Ide, 1926 | Angel trumpet |
| Platycheirus (Platycheirus) obscurus Say, 1824 | |
| Platycheirus (Platycheirus) peltatus Meigen, 1822 | Platycheirus nielseni |
| Platycheirus (Platycheirus) quadratus Say, 1823 | Meadow Sedgesitter |
| Platycheirus (Platycheirus) scambus Staeger, 1843 | |
| Platycheirus (Platycheirus) scutatus Meigen, 1822 | |
| Platycheirus (Platycheirus) varipes Curran, 1923 | |
| Platycheirus (Pyrophaena) rosarum Fabricius, 1787 | |
| Platycheirus confusus (Curran, 1925) | ⇒ Platycheirus granditarsus Forster, 1771 |
| Platycheirus granditarsis Forster, 1771 | |
| Platycheirus nearcticus Vockeroth, 1990 | |
| Platycheirus sabulicola Vockeroth, 1990 | |
| Platycheirus striatus Vockeroth, 1990 | |
| Polyporivora polypori Willard, 1914 | |
| Pseudacteon onyx Steyskal, 1944 | Fresno mat |
| Rhingia nasica Say, 1823 | American Snout Fly |
| Rhyncophoromyia conica Malloch, 1912 | |
| Sericomyia (Sericomyia) chrysotoxoides Macquart, 1842 | Mountain melonleaf |
| Sericomyia (Sericomyia) militaris Walker, 1849 | Largeflower milkweed |
| Sericomyia (Sericomyia) transversa Osburn, 1926 | |
| Somula decora Macquart, 1847 | Spotted Wood Fly |
| Sphaerophoria brevipilosa Knutson, 1973 | Watson's amaranth |
| Sphaerophoria contigua (Macquart, 1847) | ⇒ Sphaerophoria cylindrica Say, 1824 |
| Sphaerophoria novaeangliae Johnson, 1916 | Godfrey's stitchwort |
| Sphaerophoria philanthus Meigen, 1822 | |
| Spilomyia sayi Goot, 1964 | Four-Lined Hornet Fly |
| Syritta pipiens Linnaeus, 1758 | Hover Fly |
| Syrphus knabi Shannon, 1916 | Eastern Flower Fly |
| Syrphus rectus Osten Sacken, 1875 | Yellow-Legged Flower Fly |
| Syrphus ribesii Linnaeus, 1758 | Common Flower Fly |
| Syrphus torvus Osten Sacken, 1875 | Hairy-eyed flower fly |
| Syrphus vitripennis Meigen, 1822 | Western bog yellowcress |
| Temnostoma alternans Loew, 1864 | Wasp-Like Falsehorn |
| Temnostoma balyras Walker, 1849 | Yellow-Haired Falsehorn |
| Temnostoma excentrica Harris, 1862 | |
| Temnostoma obscurum Loew, 1864 | |
| Temnostoma venustum Williston, 1887 | Beach clustervine |
| Tomosvaryella sylvatica Meigen, 1824 | |
| Toxomerus geminatus Say, 1823 | Eastern Calligrapher |
| Toxomerus marginatus Meigen, 1822 | Margined Calligrapher |
| Triphleba subcompleta Schmitz, 1927 | |
| Tropidia quadrata Say, 1824 | Common Thick-Legged Fly |
| Volucella bombylans Linnaeus, 1758 | Bumble Bee Hover Fly |
| Xanthogramma flavipes Loew, 1863 | American Harlequin |
| Xylota (Ameroxylota) flukei Curran, 1941 | |
| Xylota (Ameroxylota) segnis Linnaeus, 1758 | Brown-Toed Forest Fly |
| Xylota (Xylota) quadrimaculata Loew, 1866 | Scarlet globemallow |
| Xylota flavifrons Walker, 1849 | Largeflower milkweed |
