| Adachia apicenigra Parent, 1939 | |
| Adachia hispida Hardy & Kohn, 1964 | |
| Adachia nigripedis Hardy & Kohn, 1964 | |
| Adachia nudata Osten Sacken, 1887 | |
| Adachia obscurifacies Parent, 1939 | |
| Adachia williamsi Osten Sacken, 1887 | |
| Arciellia dolichostoma Hardy & Kohn, 1964 | |
| Arciellia flaviventer Hardy & Kohn, 1964 | |
| Arciellia xanthopleura Hardy & Kohn, 1964 | |
| Calyxochaetus cilifemoratus Van Duzee, 1924 | |
| Calyxochaetus millardi Meuffels & G..., 1999 | |
| Calyxochaetus oreas Wheeler, 1899 | |
| Calyxochaetus vegetus Wheeler, 1899 | |
| Campsicnemus acuticornis Parent, 1939 | |
| Campsicnemus aeptus Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus alaskensis Harmston & M..., 1966 | |
| Campsicnemus albicomus Tenorio, 1969 | |
| Campsicnemus albitarsus Hardy & Kohn, 1964 | |
| Campsicnemus alexanderi Harmston & M..., 1966 | |
| Campsicnemus ambytylus Hardy & Kohn, 1964 | |
| Campsicnemus americanus Van Duzee, 1924 | Narrow-seeded yampah |
| Campsicnemus aniani Evenhuis, 2012 | |
| Campsicnemus arcuata (Adachi, 1953) | ⇒ Campsicnemus petalicnemus Hardy & Kohn, 1964 |
| Campsicnemus arcuatus Van Duzee, 1917 | Red-root yampah |
| Campsicnemus aurilobus Tenorio, 1969 | |
| Campsicnemus bartletti Evenhuis, 2015 | |
| Campsicnemus bellulus Van Duzee, 1933 | |
| Campsicnemus bicirritus Tenorio, 1969 | |
| Campsicnemus bicoloripes Parent, 1937 | |
| Campsicnemus bicrenatus Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus biseta Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus breviciliatus Parent, 1939 | |
| Campsicnemus brevipes Van Duzee, 1933 | |
| Campsicnemus brevitibia Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus brunnescens Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus bryophilus Adachi, 1954 | |
| Campsicnemus calcaratus (Grimshaw, 1901) | ⇒ Campsicnemus curvispina Van Duzee, 1930 |
| Campsicnemus calcaritarsus Adachi, 1953 | |
| Campsicnemus camptoplax Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus capitulatus Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus carinatus Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus charliechaplini Evenhuis, 1996 | |
| Campsicnemus chauliopodus Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus ciliatus Van Duzee, 1933 | |
| Campsicnemus claudicans Loew, 1864 | |
| Campsicnemus clinotibia Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus coloradensis Harmston & M..., 1966 | |
| Campsicnemus comatus Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus compressus Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus congregatus Malloch, 1932 | Smooth bur cucumber |
| Campsicnemus coniculus Hardy & Kohn, 1964 | |
| Campsicnemus contortus Parent, 1937 | |
| Campsicnemus cracens Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus crassipes Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus crinitibia Van Duzee, 1933 | |
| Campsicnemus crispatus Tenorio, 1969 | |
| Campsicnemus crossotibia Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus crossotus Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus curvispina Van Duzee, 1930 | Parsley |
| Campsicnemus deficiens Parent, 1939 | |
| Campsicnemus degener Wheeler, 1899 | Heartleaf groundcherry |
| Campsicnemus depauperatus Parent, 1939 | |
| Campsicnemus diamphidius Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus dicondylus Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus diffusus Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus digitatus Tenorio, 1969 | |
| Campsicnemus disjunctus Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus distinctus Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus distortipes Grimshaw, 1901 | Scaly swordfern |
| Campsicnemus divergens Van Duzee, 1933 | |
| Campsicnemus drymoscartes Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus ephydrus Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus exiguus Hardy & Kohn, 1964 | |
| Campsicnemus eximius Hardy & Kohn, 1964 | |
| Campsicnemus expansus Tenorio, 1969 | |
| Campsicnemus ferrugineus Parent, 1934 | |
| Campsicnemus fimbriatus Grimshaw, 1901 | Scaly swordfern |
| Campsicnemus finitimus Tenorio, 1969 | |
| Campsicnemus flavipes Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus flaviventer Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus flexuosus Parent, 1939 | |
| Campsicnemus fragilis Parent, 1939 | |
| Campsicnemus fulvifacies Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus fumipennis Parent, 1937 | |
| Campsicnemus furax Parent, 1939 | |
| Campsicnemus fusticulus Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus gloriosus Van Duzee, 1933 | |
| Campsicnemus goniochaeta Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus grimshawi Van Duzee, 1933 | |
| Campsicnemus haleakalaae Zimmerman, 1938 | |
| Campsicnemus halonae Evenhuis, 1996 | |
| Campsicnemus hao Evenhuis, 2018 | |
| Campsicnemus hardyi Tenorio, 1969 | |
| Campsicnemus hawaiiensis Hardy & Delf..., 1974 | |
| Campsicnemus helvolus Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus hirtipes Loew, 1861 | |
| Campsicnemus hispidipes Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus hoplitipodus Adachi, 1953 | |
| Campsicnemus hygrophilus Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus impariseta Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus inaequalis Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus indecorus Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus inermipes Malloch, 1932 | Smooth bur cucumber |
| Campsicnemus insuetus Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus invaginatus Tenorio, 1969 | |
| Campsicnemus kokokekuku Evenhuis, 2007 | |
| Campsicnemus labilis Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus latipenna Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus lepidochaites Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus longiciliatus Parent, 1939 | |
| Campsicnemus longiquus Tenorio, 1969 | |
| Campsicnemus longitibia Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus loxothrix Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus macula Parent, 1939 | |
| Campsicnemus maui Evenhuis, 2007 | |
| Campsicnemus maukele Evenhuis, 2007 | |
| Campsicnemus mediofloccus Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus melanus Harmston & K..., 1942 | |
| Campsicnemus membranilobus Parent, 1939 | |
| Campsicnemus milleri Harmston, 1966 | |
| Campsicnemus mirabilis Frey, 1945 | |
| Campsicnemus miritibialis Van Duzee, 1933 | |
| Campsicnemus miser Parent, 1939 | |
| Campsicnemus modicus Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus montanus Harmston & K..., 1942 | |
| Campsicnemus mucronatus Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus mundulus Hardy & Kohn, 1964 | |
| Campsicnemus nambai Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus nigricollis Van Duzee, 1933 | |
| Campsicnemus nigripes Van Duzee, 1917 | Red-root yampah |
| Campsicnemus nigroanalis Parent, 1939 | |
| Campsicnemus norops Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus obscurus Parent, 1937 | |
| Campsicnemus oedipus Wheeler, 1899 | Heartleaf groundcherry |
| Campsicnemus olympicola Parent, 1939 | |
| Campsicnemus oregonensis Harmston & M..., 1966 | |
| Campsicnemus ornatus Van Duzee, 1933 | |
| Campsicnemus pallidus Parent, 1939 | |
| Campsicnemus paniculatus Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus parvulus Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus patellifer Grimshaw, 1902 | Scaly swordfern |
| Campsicnemus penicillatus Parent, 1934 | |
| Campsicnemus perplexus Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus petalicnemus Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus petalicnemus arcuata Adachi, 1953 | |
| Campsicnemus pherocteis Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus philoctetes Wheeler, 1899 | Heartleaf groundcherry |
| Campsicnemus philohydratus Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus planitibia Parent, 1939 | |
| Campsicnemus platystylatus Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus plautinus Adachi, 1953 | |
| Campsicnemus popeye Evenhuis, 2013 | |
| Campsicnemus profusus Hardy & Kohn, 1964 | |
| Campsicnemus putillus Parent, 1937 | |
| Campsicnemus pycnochaeta Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus rectus Malloch, 1932 | Smooth bur cucumber |
| Campsicnemus restrictus Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus rhyphopus Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus ridiculus Parent, 1937 | |
| Campsicnemus scambus Fallen, 1823 | |
| Campsicnemus sciarus Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus scolimerus Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus setiger Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus silvaticus Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus simplicipes Parent, 1937 | |
| Campsicnemus sinuatus Van Duzee, 1933 | |
| Campsicnemus sinuosus Evenhuis, 2007 | |
| Campsicnemus spinicoxa Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus tarsiciliatus Parent, 1939 | |
| Campsicnemus terracola Hardy & Kohn, 1964 | |
| Campsicnemus thersites Wheeler, 1899 | Heartleaf groundcherry |
| Campsicnemus tibialis Van Duzee, 1933 | |
| Campsicnemus truncatus Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus ui Evenhuis, 2007 | |
| Campsicnemus uncatus Tenorio, 1969 | |
| Campsicnemus undulatus Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus uniseta Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus utahensis Harmston & K..., 1942 | |
| Campsicnemus vafellus Parent, 1939 | |
| Campsicnemus viridulus Hardy & Kohn, 1964 | Aridland peperomia |
| Campsicnemus wheeleri Van Duzee, 1923 | Lemmon's yampah |
| Campsicnemus wilderae Runyon, 2008 | |
| Campsicnemus williamsi Van Duzee, 1933 | |
| Chaetogonopteron bartaki Olejnícek & ..., 2007 | |
| Chaetogonopteron capricorne Bickel, 2013 | |
| Chaetogonopteron colliepa Bickel, 2014 | |
| Chaetogonopteron ephydroides Bickel, 2014 | |
| Chaetogonopteron hamulitarsus Bickel, 2014 | |
| Chaetogonopteron lacrimulus Bickel, 2014 | |
| Chaetogonopteron pistillus Bickel, 2014 | |
| Chaetogonopteron vexillium Bickel, 2014 | |
| Chaetogonopteron weano Bickel, 2014 | |
| Elmoia bullata Hardy & Kohn, 1964 | |
| Elmoia exartema Hardy & Kohn, 1964 | |
| Elmoia hamata Hardy & Kohn, 1964 | |
| Elmoia lanceolata Tenorio, 1969 | |
| Elmoia multispinosa Hardy & Kohn, 1964 | |
| Elmoia nigrohalterata Parent, 1939 | |
| Elmoia saxatilis Grimshaw, 1901 | |
| Elmoia viridifacies Parent, 1938 | |
| Emperoptera bryophilus Adachi, 1954 | |
| Emperoptera hardyi Evenhuis, 1997 | |
| Emperoptera hawaiiensis Hardy & Delf..., 1974 | |
| Emperoptera mirabilis (Grimshaw, 1902) | ⇒ Campsicnemus mirabilis Frey, 1945 |
| Emperoptera montgomeryi Evenhuis, 1997 | |
| Emperoptera zimmermani Evenhuis, 1997 | |
| Erebomyia aetheoptera Hurley & Runyon, 2009 | |
| Erebomyia akidoptera Hurley & Runyon, 2009 | |
| Erebomyia exalloptera Runyon & Hurley, 2004 | |
| Erebomyia ramseyensis Hurley & Runyon, 2009 | |
| Eurynogaster ablusispina Tenorio, 1969 | |
| Eurynogaster angusticerca Tenorio, 1969 | |
| Eurynogaster angustifacies Hardy, 1964 | Aridland peperomia |
| Eurynogaster apicenigra (Parent, 1939) | ⇒ Adachia apicenigra Parent, 1939 |
| Eurynogaster argentata Hardy, 1964 | Aridland peperomia |
| Eurynogaster binodata (Parent, 1939) | ⇒ Sigmatineurum binodatum Parent, 1939 |
| Eurynogaster callaina Hardy, 1964 | Aridland peperomia |
| Eurynogaster cilifemorata Parent, 1939 | |
| Eurynogaster clavaticauda Van Duzee, 1933 | |
| Eurynogaster concava Tenorio, 1969 | |
| Eurynogaster exartema (Hardy, 1964) | ⇒ Elmoia exartema Hardy & Kohn, 1964 |
| Eurynogaster flaviventer (Hardy, 1964) | ⇒ Arciellia flaviventer Hardy & Kohn, 1964 |
| Eurynogaster furva Hardy, 1964 | Aridland peperomia |
| Eurynogaster hawaiiensis Grimshaw, 1901 | |
| Eurynogaster incompta Hardy, 1964 | Aridland peperomia |
| Eurynogaster kauaiensis Hardy, 1964 | Aridland peperomia |
| Eurynogaster luteihalterata (Parent, 1939) | ⇒ Elmoia saxatilis Grimshaw, 1901 |
| Eurynogaster maculata Parent, 1939 | |
| Eurynogaster mediocris Tenorio, 1969 | |
| Eurynogaster minor Parent, 0 | |
| Eurynogaster nigrohalterata (Parent, 1939) | ⇒ Elmoia nigrohalterata Parent, 1939 |
| Eurynogaster obscura Tenorio, 1969 | |
| Eurynogaster obscurifacies (Parent, 1939) | ⇒ Adachia obscurifacies Parent, 1939 |
| Eurynogaster paludis Hardy, 1964 | Aridland peperomia |
| Eurynogaster parenti Hardy, 1964 | Aridland peperomia |
| Eurynogaster parenti hawaiensis | |
| Eurynogaster retrociliata Parent, 1939 | |
| Eurynogaster spiniger Grimshaw, 1901 | |
| Eurynogaster subciliata Hardy, 1964 | Aridland peperomia |
| Eurynogaster tanyceraea Hardy, 1964 | Aridland peperomia |
| Eurynogaster teroprolixa Hardy, 1964 | Aridland peperomia |
| Eurynogaster undulata Tenorio, 1969 | |
| Eurynogaster variabilis Hardy, 1964 | Aridland peperomia |
| Eurynogaster virida (Van Duzee, 1933) | ⇒ Sweziella virida Van Duzee, 1933 |
| Eurynogaster viridifacies (Parent, 1938) | ⇒ Elmoia viridifacies Parent, 1938 |
| Eurynogaster vittata Hardy, 1964 | Aridland peperomia |
| Lamprochromus bifasciatus Macquart, 1827 | |
| Lamprochromus canadensis Van Duzee, 1917 | |
| Lamprochromus occidentalis Robinson, 1967 | Pygmyflower vetch |
| Lamprochromus satrapa Wheeler, 1890 | |
| Micropygus bifenestratus Parent, 1933 | |
| Micropygus pulchellus Parent, 1933 | |
| Micropygus vagans Parent, 1933 | |
| Neoparentia caudatus Van Duzee, 1917 | |
| Nothorhaphium aemulans Becker, 1922 | |
| Nothorhaphium callosum Bickel, 1999 | |
| Nothorhaphium nudicorne Bickel, 1999 | |
| Parasyntormon appendiculatum Harmston & K..., 1943 | |
| Parasyntormon asellus Wheeler, 1899 | Heartleaf groundcherry |
| Parasyntormon classicum Harmston & K..., 1943 | |
| Parasyntormon emarginatum Wheeler, 1899 | Heartleaf groundcherry |
| Parasyntormon flavicoxa Van Duzee, 1922 | Kellogg's yampah |
| Parasyntormon fraterculus Van Duzee, 1922 | Kellogg's yampah |
| Parasyntormon hendersoni Harmston & K..., 1939 | |
| Parasyntormon hinnulus Wheeler, 1899 | Heartleaf groundcherry |
| Parasyntormon lagotis Wheeler, 1899 | Heartleaf groundcherry |
| Parasyntormon lepus Van Duzee, 1918 | Common yampah |
| Parasyntormon longicorne Van Duzee, 1933 | Masterwort |
| Parasyntormon montivagum Wheeler, 1899 | Heartleaf groundcherry |
| Parasyntormon mulinum Van Duzee, 1922 | Kellogg's yampah |
| Parasyntormon nigripes Harmston & K..., 1943 | |
| Parasyntormon occidentale Aldrich, 1894 | |
| Parasyntormon petiolatum Malloch, 1921 | Masterwort |
| Parasyntormon utahnum Van Duzee, 1933 | Masterwort |
| Parasyntormon virens Harmston & K..., 1943 | |
| Phrudoneura collessi Bickel, 2013 | |
| Scelloides raptorius Parent, 1933 | |
| Sweziella aeruginosa Hardy & Kohn, 1964 | |
| Sweziella conspicua Hardy & Kohn, 1964 | |
| Sweziella emarginata Tenorio, 1969 | |
| Sweziella gracilipennata Hardy & Kohn, 1964 | |
| Sweziella pictilipennata Tenorio, 1969 | |
| Sweziella tergoprolixa Hardy & Kohn, 1964 | |
| Sweziella virida Van Duzee, 1933 | |
| Sympycnus (Sympycnus) turbidus Becker, 1922 | Longlegged fly |
| Sympycnus albinotatus Parent, 1933 | |
| Sympycnus aldrichi Van Duzee, 1930 | Parsley |
| Sympycnus arizonicus Harmston, 1968 | |
| Sympycnus aurifacies Van Duzee, 1923 | Lemmon's yampah |
| Sympycnus binodatus Harmston & K..., 1940 | |
| Sympycnus brevicentris Van Duzee, 1930 | Parsley |
| Sympycnus calcaratus (Van Duzee, 1930) | ⇒ Sympycnus magellanicus Robinson, 1970 |
| Sympycnus cilifemoratus Parent, 1932 | |
| Sympycnus clavatus Van Duzee, 1913 | Bolander's yampah |
| Sympycnus clavicornis Van Duzee, 1930 | Parsley |
| Sympycnus cuprinus Wheeler, 1899 | Heartleaf groundcherry |
| Sympycnus distinctus Parent, 1933 | |
| Sympycnus distortus Van Duzee, 1930 | Parsley |
| Sympycnus edwardsi Parent, 1933 | |
| Sympycnus fasciventris Van Duzee, 1917 | Red-root yampah |
| Sympycnus frontalis Loew, 1861 | |
| Sympycnus fuscitibialis (Harmston & K..., 1940) | ⇒ Calyxochaetus cilifemoratus Van Duzee, 1924 |
| Sympycnus globulicauda Van Duzee, 1930 | Parsley |
| Sympycnus hardyi Harmston & K..., 1940 | |
| Sympycnus harrisi Parent, 1933 | |
| Sympycnus humilis Parent, 1933 | |
| Sympycnus inaequalis Van Duzee, 1930 | Parsley |
| Sympycnus inornatus Van Duzee, 1917 | |
| Sympycnus insolitus Van Duzee, 1932 | |
| Sympycnus isoaristus Harmston & K..., 1940 | |
| Sympycnus laevigatus Van Duzee, 1930 | Parsley |
| Sympycnus latitarsis Van Duzee, 1930 | Parsley |
| Sympycnus lineatus Loew, 1861 | |
| Sympycnus longipilus Parent, 1933 | |
| Sympycnus luteinotatus Parent, 1933 | |
| Sympycnus luteipes Van Duzee, 1923 | |
| Sympycnus lutiepes Van Duzee, 1923 | |
| Sympycnus magellanicus Robinson, 1970 | |
| Sympycnus marcidus Wheeler, 1899 | Heartleaf groundcherry |
| Sympycnus minuticornis Van Duzee, 1932 | |
| Sympycnus montanus Van Duzee, 1930 | Parsley |
| Sympycnus monticola Van Duzee, 1932 | |
| Sympycnus nodatus Aldrich, 1916 | Jone's globemallow |
| Sympycnus oreas Wheeler, 1899 | |
| Sympycnus pennarista Parker, 1919 | |
| Sympycnus pictipes Harmston & K..., 1940 | |
| Sympycnus pugil Wheeler, 1899 | Heartleaf groundcherry |
| Sympycnus pulvillus Reinhard, 1947 | Parsley |
| Sympycnus sobrinus Wheeler, 1899 | |
| Sympycnus spatulatus (Harmston & K..., 1940) | ⇒ Calyxochaetus oreas Wheeler, 1899 |
| Sympycnus tertianus Loew, 1864 | |
| Sympycnus tripilus Van Duzee, 1930 | Parsley |
| Sympycnus utahensis Harmston & K..., 1939 | |
| Syntormon affine Coquillett, 1897 | |
| Syntormon bisinuatum Van Duzee, 1925 | Oregon yampah |
| Syntormon californicum Harmston, 1951 | Higuillo |
| Syntormon cinereiventre Loew, 1861 | |
| Syntormon clavatum Van Duzee, 1925 | Oregon yampah |
| Syntormon dissimilipes Van Duzee, 1925 | Oregon yampah |
| Syntormon distortitarse (Van Duzee, 1933) | ⇒ Syntormon flexibile Wulp, 1890 |
| Syntormon femoratum Townsend, 1891 | Oregon yampah |
| Syntormon flexibile Wulp, 1890 | Long-legged fly |
| Syntormon kennedyi Harmston & K..., 1942 | |
| Syntormon medogense Wang, 2006 | |
| Syntormon myklebusti Harmston & M..., 1966 | |
| Syntormon oregonense Hamrston & K..., 1942 | |
| Syntormon oregonensis Harmston & K..., 1942 | |
| Syntormon palmare Loew, 1864 | |
| Syntormon simplicitarse Van Duzee, 1925 | Oregon yampah |
| Syntormon strataegum Wheeler, 1899 | |
| Syntormon tricoloripes Curran, 1923 | |
| Syntormon uintaense Harmston & K..., 1940 | |
| Syntormon uintaensis Harmston & K..., 1940 | |
| Syntormon utahense Harmston & K..., 1942 | |
| Syntormon utahensis Harmston & K..., 1942 | |
| Syntormon variegatum Harmston, 1952 | Guyanese pepper |
| Syntormon xiphandroides Parent, 1932 | |
| Telmaturgus parvus Van Duzee, 1942 | |
| Tetrachaetus bipunctatus Parent, 1933 | |
| Tetrachaetus simplex Parent, 1933 | |
| Teuchophorus clavigerellus Wheeler, 1899 | Heartleaf groundcherry |
| Teuchophorus condylus Harmston & K..., 1946 | |
| Teuchophorus diminucosta Harmston & K..., 1942 | |
| Teuchophorus utahensis Harmston & K..., 1942 | |
| Uropachys clavastyla Hardy & Kohn, 1964 | |
| Uropachys crassicercus Hardy & Kohn, 1964 | |
| Uropachys flavicrura Hardy & Kohn, 1964 | |
| Uropachys fusticerca Hardy & Kohn, 1964 | |
| Uropachys palustricola Hardy & Kohn, 1964 | |
| Uropachys pulvereus Hardy & Kohn, 1964 | |
