AcrosatheAcrosathe bimaculata (Cole, 1923)
Acrosathe novella (Coquillett, 1893)
Acrosathe otiosa (Coquillett, 1893)
Acrosathe pacifica (Cole, 1923)
Acrosathe vanduzeei (Cole, 1923)
Acrosathe vialis (Osten Sacken, 1877)Ammonaios
Ammonaios niveus (Kröber, 1914)Apsilocephala
Apsilocephala longistyla Kröber, 1914
Arenigena
Arenigena brunnea (Kröber, 1914)
Arenigena marcida (Coquillett, 1893)
Arenigena semitaria (Coquillett, 1893)
Ataenogera
Ataenogera abdominalis Kröber, 1914
Brachylinga
Brachylinga baccata (Coquillett, 1893)
Brachylinga cinerea (Cole, 1923)
Brachylinga monensis (Curran, 1926)
Brachylinga morata (Coquillett, 1893)
Brachylinga obscura (Coquillett, 1893)
Brachylinga pavida (Coquillett, 1893)
Brachylinga pilosa (Kröber, 1914)
Brachylinga platycera (Loew, 1872)
Brachylinga squamosa (Hardy, 1943)
Brachylinga tepocae (Cole, 1923)
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Breviperna
Breviperna placida (Coquillett, 1894)
Chromolepida
Chromolepida bella Cole, 1923
Chromolepida clavitibia Webb & Irwin, 1995
Chromolepida mexicana Cole, 1923
Chromolepida nigra Webb & Irwin, 1995
Chromolepida pruinosa (Coquillett, 1904)
Cyclotelus
Cyclotelus bellus (Cole, 1923)
Cyclotelus colei Irwin & Lyneborg, 1981
Cyclotelus flavipes (Hardy, 1943)
Cyclotelus hardyi (Cole, 1960)
Cyclotelus pictipennis (Wiedemann, 1821)
Cyclotelus rufiventris (Loew, 1869)
Cyclotelus sumichrasti (Bellardi, 1861)
Dialineura
Dialineura gorodkovi Zaitzev, 1971
Dichoglena
Dichoglena amplifrons (Cole, 1925)
Dichoglena borealis (Cole, 1923)
Dichoglena latifrons (Cole, 1923)
Dichoglena melampodia (Loew, 1869)
Dichoglena nigrina (Kröber, 1914)
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Henicomyia
Henicomyia brevicornis Bromley, 1934
Henicomyia hubbardii Coquillett, 1898
Litolinga
Litolinga acuta (Adams, 1903)
Litolinga tergisa (Say, 1823)
Lysilinga
Lysilinga aurantiaca (Coquillett, 1904)
Lysilinga occipitalis (Adams, 1904)
Lysilinga subrufa (Cole, 1923)
Megalinga
Megalinga bolbocera (Osten Sacken, 1887)
Megalinga insignata Irwin & Lyneborg, 1981
Nebritus
Nebritus pellucidus Coquillett, 1894
Nebritus powelli Webb & Irwin, 1991
Nebritus tanneri (Hardy, 1938)
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Ozodiceromyia
Ozodiceromyia albertensis (Cole, 1925)
Ozodiceromyia aldrichii (Coquillett, 1893)
Ozodiceromyia anomala (Adams, 1904)
Ozodiceromyia argentata (Bellardi, 1861)
Ozodiceromyia argentata (Bellardi, 1861)
Ozodiceromyia argentifera (Kröber, 1929)
Ozodiceromyia californica (Kröber, 1912)
Ozodiceromyia coloradensis (James, 1936)
Ozodiceromyia costalis (Loew, 1869)
Ozodiceromyia crassicornis (Bellardi, 1861)
Ozodiceromyia davisi (Johnson, 1926)
Ozodiceromyia flavipennis (Cole, 1923)
Ozodiceromyia frommeri Irwin & Lyneborg, 1981)
Ozodiceromyia frontalis (Cole, 1923)
Ozodiceromyia germana (Walker, 1848)
Ozodiceromyia hoemorrhoidalis (Macquart, 1840)
Ozodiceromyia johnsoni (Coquillett, 1893)
Ozodiceromyia levigata (Loew, 1876)
Ozodiceromyia melanoneura (Loew, 1872)
Ozodiceromyia metallica (Kröber, 1914)
Ozodiceromyia mexicana Bigot, 1890
Ozodiceromyia milleri (Irwin, 1977)
Ozodiceromyia montiradicis (James, 1949)
Ozodiceromyia nanella (Cole, 1960)
Ozodiceromyia nigra (Say, 1823)
Ozodiceromyia nigrimana (Kröber, 1912)
Ozodiceromyia notata (Wiedemann, 1821)
Ozodiceromyia platancala (Loew, 1876)
Ozodiceromyia ruficornis (Macquart, 1840)
Ozodiceromyia rugifrons (Kröber, 1914)
Ozodiceromyia signatipennis (Cole, 1923)
Ozodiceromyia subnotata (Johnson, 1926)
Ozodiceromyia univittata (Bellardi, 1861)
Ozodiceromyia xanthobasis (James, 1949)
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Pallicephala
Pallicephala flavipilosa (Cole, 1923)
Pallicephala occidentalis (Cole, 1923)
Pallicephala pachyceras (Williston, 1908)
Pallicephala quebecensis Webb & Irwin, 1991
Pallicephala slossonae (Coquillett, 1893)
Pallicephala variegata (Loew, 1869)
Pallicephala westcotti Webb & Irwin, 1991Pandivirilia
Pandivirilia argentifrons (Cole, 1923)
Pandivirilia bussi (James, 1952)
Pandivirilia canadensis (Cole, 1923)
Pandivirilia grandis (Johnson, 1902)
Pandivirilia limata (Coquillett, 1894)
Pandivirilia montivaga (Coquillett, 1923)
Pandivirilia pollinosa (Cole, 1923)Parapherocera
Parapherocera macswaini Irwin, 1977
Parapherocera montana Irwin, 1977
Parapherocera wilcoxi Irwin, 1977
Penniverpa
Penniverpa festina (Coquillett, 1893)
Pherocera
Pherocera albihalteralis Cole, 1923
Pherocera bishopensis Irwin, 1983
Pherocera boharti Irwin, 1983
Pherocera boydi Irwin, 1983
Pherocera flavipes Cole, 1923
Pherocera nigragena Irwin, 1983
Pherocera nigripes Cole, 1923
Pherocera rufoabdominalis Irwin, 1983
Pherocera rupina Irwin, 1983
Pherocera signatifrons Cole, 1923
Pherocera tomentamala Irwin, 1983
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Phycus
Phycus frommeri Webb & Irwin, 1988
Phycus frontalis Irwin & Webb, 1988
Psilocephala
Psilocephala conspicua (Walker, 1848)
Psilocephala munda Loew, 1869
Psilocephala pygmaea Kröber, 1911
Psilocephala vicina (Walker, 1848)
Rhagioforma
Rhagioforma maculipennis (Kröber, 1914)
Schlingeria
Schlingeria ammobata Irwin, 1977
Spiriverpa
Spiriverpa albiceps (Loew, 1869)
Spiriverpa bella nigrimana (Kröber, 1914)
Spiriverpa candidata (Loew, 1869)
Spiriverpa cinerascens (Cole, 1923)
Spiriverpa cockerelli (Cole, 1923)
Spiriverpa nitoris (Coquillett, 1894)
Spiriverpa senex (Walker, 1848)
Tabuda
Tabuda borealis Cole, 1923
Tabuda planiceps (Loew, 1872)
Tabuda varia (Walker, 1848)
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Tabudamima
Tabudamima melanophleba (Loew, 1876)
Thereva
Thereva albopilosa Kröber, 1912
Thereva aurofasciata Kröber, 1912
Thereva bakeri Cole, 1923
Thereva brunnea Cole, 1923
Thereva cingulata Kröber, 1912
Thereva comata (Loew, 1869)
Thereva concavifrons Kröber, 1914
Thereva diversa Coquillett, 1894
Thereva duplicis Coquillett, 1893
Thereva egressa Coquillett, 1894
Thereva flavicauda Coquillett, 1904
Thereva flavicincta (Loew, 1869)
Thereva flavipilosa Cole, 1923
Thereva flavohirta Kröber, 1914
Thereva foxi Cole, 1923
Thereva frontalis Say, 1824
Thereva fucata (Loew, 1872)
Thereva fucatoides Bromley, 1937
Thereva hirticeps (Loew, 1874)
Thereva johnsoni Coquillett, 1893
Thereva macdunnoughi Cole, 1925
Thereva nebulosa Kröber, 1912
Thereva neomexicana Cole, 1923
Thereva nigripilosa Cole, 1923
Thereva niveipennis Kröber, 1914
Thereva pseudoculata Cole, 1923
Thereva strigipes (Loew, 1869)
Thereva ustulata Kröber, 1912
Thereva utahensis Hardy, |