- Falcitettix sibiricus Linnavuori
- Falcitettix sibiricus Linnavuori 1953d: 58 [n.sp.]; Metcalf 1967b, 6(10b): 2052 [Cat.]
- DISTRIBUTION: Russia (Metcalf Cat.)
- Faltala brachyptera Oman
- Faltala brachyptera Oman 1938b: 385 [n.sp.]; Metcalf 1967b, 6(10b): 1606 [Cat.]
- DISTRIBUTION: Argentina (Metcalf Cat.)
- Fieberiella florii (Stål)
- Selenocephalus florii Stål 1864b: 67 [n.sp.]; Metcalf 1967b, 6(10b): 1704 [Cat.]
- Phlepsius atropunctatus DeLong 1923a: 131 [n.sp.]; Metcalf 1967b, 6(10b): 1705 [Cat.]
- DISTRIBUTION: Greece, Germany, France, Italy, Austria, Kazakstan, Turkmenistan, Hungary, Serbia, Iran, Iraq, Russia, Georgia, Azerbaijan, Romania, Armenia, Ukraine, Czech Republic, Albania, Cyprus, Slovakia, France, Iraq, Turkey, United States, Canada (Metcalf Cat.)
- Fieberiella pallida Melichar
- Fieberiella pallida Melichar 1896b: 179 [n.sp.]; Metcalf 1967b, 6(10b): 1707 [Cat.]
- DISTRIBUTION: Turkey (Metcalf Cat.)
- Fieberiella pulcherrima (Berg)
- Fieberia pulcherrima Berg 1879d: 270 [n.sp.]; Metcalf 1967b, 6(10b): 1707 [Cat.]
- DISTRIBUTION: Argentina (Metcalf Cat.)
- Fitchana furcata (Osborn)
- Paramesus furcatus Osborn 1900b: 285 [n.sp.]; Metcalf 1967c, 6(10c): 2167 [Cat.]
- DISTRIBUTION: United States (Metcalf Cat.)
- Fitchana twiningi (Uhler)
- Jassus twiningi Uhler 1879a: 511 [n.sp.]; Metcalf 1967c, 6(10c): 2167 [Cat.]
- DISTRIBUTION: United States, Canada (Metcalf Cat.)
- Fitchana vitellina (Fitch)
- Acocephalus vitellinus Fitch 1851a: 57 [n.sp.]; Metcalf 1967c, 6(10c): 2168 [Cat.]
- DISTRIBUTION: United States, Canada (Metcalf Cat.)
- Flexamia abbreviata (Osborn & Ball)
- Deltocephalus abbreviatus Osborn & Ball 1897a: 206 [n.sp.]; Metcalf 1967b, 6(10b): 1750 [Cat.]
- DISTRIBUTION: United States (Metcalf Cat.)
- Flexamia albida (Osborn & Ball)
- Deltocephalus albidus Osborn & Ball 1897a: 201 [n.sp.]; Metcalf 1967b, 6(10b): 1751 [Cat.]
- DISTRIBUTION: United States (Metcalf Cat.)
- Flexamia areolata (Ball)
- Deltocephalus areolatus Ball 1899b: 188 [n.sp.]; Metcalf 1967b, 6(10b): 1752 [Cat.]
- DISTRIBUTION: United States (Metcalf Cat.)
- Flexamia atlantica (DeLong)
- Deltocephalus (Flexamia) atlanticus DeLong 1926d: 29 [n.sp.]; Metcalf 1967b, 6(10b): 1754 [Cat.]
- DISTRIBUTION: United States (Metcalf Cat.)
- Flexamia bidentata DeLong
- Flexamia bidentata DeLong 1935a: 155 [n.sp.]; Metcalf 1967b, 6(10b): 1754 [Cat.]
- DISTRIBUTION: United States (Metcalf Cat.)
- Flexamia curvata (DeLong)
- Deltocephalus (Flexamia) curvatus DeLong 1926d: 34 [n.sp.]; Metcalf 1967b, 6(10b): 1754 [Cat.]
- DISTRIBUTION: United States (Metcalf Cat.)
- Flexamia decora Beamer & Tuthill
- Flexamia decora Beamer & Tuthill 1934a: 2 [n.sp.]; Metcalf 1967b, 6(10b): 1755 [Cat.]
- DISTRIBUTION: United States (Metcalf Cat.)
- Flexamia doeringae Beamer & Tuthill
- Flexamia doeringae Beamer & Tuthill 1934a: 3 [n.sp.]; Metcalf 1967b, 6(10b): 1755 [Cat.]
- DISTRIBUTION: United States (Metcalf Cat.)
- Flexamia flexulosa (Ball)
- Deltocephalus flexulosus Ball 1899b: 189 [n.sp.]; Metcalf 1967b, 6(10b): 1755 [Cat.]
- DISTRIBUTION: United States (Metcalf Cat.)
- Flexamia funabula (Crumb)
- Deltocephalus funabulus Crumb 1915a: 189 [n.sp.]; Metcalf 1967b, 6(10b): 1756 [Cat.]
- DISTRIBUTION: United States (Metcalf Cat.)
- Flexamia graminea (DeLong)
- Deltocephalus (Flexamia) gramineus DeLong 1926d: 30 [n.sp.]; Metcalf 1967b, 6(10b): 1757 [Cat.]
- DISTRIBUTION: United States (Metcalf Cat.)
- Flexamia grammica (Ball)
- Deltocephalus grammicus Ball 1900b: 204 [n.sp.]; Metcalf 1967b, 6(10b): 1757 [Cat.]
- DISTRIBUTION: United States (Metcalf Cat.)
- Flexamia imputans (Osborn & Ball)
- Deltocephalus imputans Osborn & Ball 1898f: 75 [n.sp.]; Metcalf 1967b, 6(10b): 1757 [Cat.]
- DISTRIBUTION: United States (Metcalf Cat.)
- Flexamia inflata (Osborn & Ball)
- Deltocephalus inflatus Osborn & Ball 1897a: 202 [n.sp.]; Metcalf 1967b, 6(10b): 1759 [Cat.]
- DISTRIBUTION: United States (Metcalf Cat.)
- Flexamia mexicana DeLong & Hershberger
- Flexamia mexicana DeLong & Hershberger 1948a: 136 [n.sp.]; Metcalf 1967b, 6(10b): 1760 [Cat.]
- DISTRIBUTION: Mexico (Metcalf Cat.)
- Flexamia minima DeLong & Hershberger
- Flexamia minima DeLong & Hershberger 1948a: 138 [n.sp.]; Metcalf 1967b, 6(10b): 1760 [Cat.]
- DISTRIBUTION: Mexico (Metcalf Cat.)
- Flexamia miranda Knull
- Flexamia miranda Knull 1951b: 177 [n.sp.]; Metcalf 1967b, 6(10b): 1761 [Cat.]
- DISTRIBUTION: United States (Metcalf Cat.)
- Flexamia modica Beamer & Tuthill
- Flexamia modica Beamer & Tuthill 1934a: 3 [n.sp.]; Metcalf 1967b, 6(10b): 1761 [Cat.]
- DISTRIBUTION: United States (Metcalf Cat.)
- Flexamia pectinata (Osborn & Ball)
- Deltocephalus pectinatus Osborn & Ball 1897a: 205 [n.sp.]; Metcalf 1967b, 6(10b): 1761 [Cat.]
- DISTRIBUTION: United States (Metcalf Cat.)
- Flexamia picta (Osborn)
- Deltocephalus pictus Osborn 1907a: 165 [n.sp.]; Metcalf 1967b, 6(10b): 1762 [Cat.]
- DISTRIBUTION: United States (Metcalf Cat.)
- Flexamia prairiana DeLong
- Flexamia prairiana DeLong 1937d: 32 [n.sp.]; Metcalf 1967b, 6(10b): 1763 [Cat.]
- DISTRIBUTION: United States (Metcalf Cat.)
- Flexamia producta (Walker)
- Iassus productus Walker 1851b: 891 [n.sp.]; Metcalf 1967b, 6(10b): 1764 [Cat.]
- DISTRIBUTION: United States (Metcalf Cat.)
- Flexamia pyrops (Crumb)
- Deltocephalus pyrops Crumb 1915a: 191 [n.sp.]; Metcalf 1967b, 6(10b): 1764 [Cat.]
- DISTRIBUTION: United States (Metcalf Cat.)
- Flexamia reflexa (Osborn & Ball)
- Deltocephalus reflexus Osborn & Ball 1897a: 203 [n.sp.]; Metcalf 1967b, 6(10b): 1766 [Cat.]
- DISTRIBUTION: United States (Metcalf Cat.)
- Flexamia ritana Beamer
- Flexamia ritana Beamer 1936d: 257 [n.sp.]; Metcalf 1967b, 6(10b): 1768 [Cat.]
- DISTRIBUTION: United States (Metcalf Cat.)
- Flexamia sandersi (Osborn)
- Deltocephalus sandersi Osborn 1907a: 164 [n.sp.]; Metcalf 1967b, 6(10b): 1768 [Cat.]
- DISTRIBUTION: United States (Metcalf Cat.)
- Flexamia serrata Beamer & Tuthill
- Flexamia serrata Beamer & Tuthill 1934a: 4 [n.sp.]; Metcalf 1967b, 6(10b): 1770 [Cat.]
- DISTRIBUTION: Canada (Metcalf Cat.)
- Flexamia stylata (Ball)
- Deltocephalus stylatus Ball 1899b: 190 [n.sp.]; Metcalf 1967b, 6(10b): 1770 [Cat.]
- DISTRIBUTION: United States (Metcalf Cat.)
- Flexamia surcula DeLong & Sleesman
- Flexamia surculus DeLong & Sleesman 1929a: 99 [n.sp.]; Metcalf 1967b, 6(10b): 1771 [Cat.]
- DISTRIBUTION: United States (Metcalf Cat.)
- Flexamia visenda (Crumb)
- Deltocephalus visendus Crumb 1915a: 189 [n.sp.]; Metcalf 1967b, 6(10b): 1771 [Cat.]
- DISTRIBUTION: United States (Metcalf Cat.)
- Flexamia zamora DeLong & Hershberger
- Flexamia zamora DeLong & Hershberger 1948a: 137 [n.sp.]; Metcalf 1967b, 6(10b): 1772 [Cat.]
- DISTRIBUTION: Mexico (Metcalf Cat.)
- Floridonus taxodii (Sanders & DeLong)
- Thamnotettix taxodii Sanders & DeLong 1923a: 154 [n.sp.]; Metcalf 1967b, 6(10b): 1330 [Cat.]
- DISTRIBUTION: United States (Metcalf Cat.)
- Forcipata acclina DeLong & Caldwell
- Forcipata acclina DeLong & Caldwell 1936a:74 [n.sp.]; Metcalf 1968a,6(17):108 [Cat.]
- DISTRIBUTION: United States (Metcalf Cat.)
- Forcipata ancantha DeLong & Caldwell
- Forcipata ancantha DeLong & Caldwell 1936a:73 [n.sp.]; Metcalf 1968a,6(17):109 [Cat.]
- DISTRIBUTION: United States (Metcalf Cat.)
- Forcipata calipera DeLong & Caldwell
- Forcipata calipera DeLong & Caldwell 1936a:74 [n.sp.]; Metcalf 1968a,6(17):109 [Cat.]
- DISTRIBUTION: United States (Metcalf Cat.)
- Forcipata citrinella (Zetterstedt)
- Cicada citrinella Zetterstedt 1828a:536 [n.sp.]; Metcalf 1968a,6(17):109 [Cat.]
- Cicadula gracilis Zetterstedt 1840a:299 [n.sp.]; Metcalf 1968a,6(17):110 [Cat.]
- Dicranoneura similis Edwards 1885a:229 [n.sp.]; Metcalf 1968a,6(17):112 [Cat.]
- Notus fieberi Löw 1886 [in Then 1886a:39] [n.sp., not nom.nov.]; Metcalf 1968a,6(17):112 [Cat.]
- DISTRIBUTION: Widespread Europe, Great Britain, Scandinavia, Russia, Kazakhstan, Kirghizia, Tadzhikistan, Turkmenistan, Uzbekistan, Turkey, United States, Canada (Metcalf Cat.)
- Forcipata citrinella major (Wagner)
- Dicraneura major Wagner 1947c:78-80 [n.subsp. of citrinella]; Metcalf 1968a,6(17):122 [Cat.]
- DISTRIBUTION: Germany (Metcalf Cat.)
- Forcipata forcipata (Flor)
- Typhlocyba forcipata Flor 1861a:389 [n.sp.]; Metcalf 1968a,6(17):122 [Cat.]
- Notus schmidti Lethierry 1874a:269,273 [n.sp.]; Metcalf 1968a,6(17):111,123 [Cat.]
- DISTRIBUTION: Widespread Europe, Great Britain, Scandinavia, Russia, Italy (Metcalf Cat.)
- Forcipata lobata Beamer
- Forcipata lobata Beamer 1938d:229 [n.sp.]; Metcalf 1968a,6(17):126 [Cat.]
- DISTRIBUTION: United States (Metcalf Cat.)
- Forcipata loca DeLong & Caldwell
- Forcipata loca DeLong & Caldwell 1936a:71 [n.sp.]; Metcalf 1968a,6(17):126 [Cat.]
- DISTRIBUTION: United States, Canada (Metcalf Cat.)
- Forcipata magna DeLong & Caldwell
- Forcipata magna DeLong & Caldwell 1936a:71 [n.sp.]; Metcalf 1968a,6(17):127 [Cat.]
- DISTRIBUTION: United States (Metcalf Cat.)
- Forcipata ohioensis DeLong & Caldwell
- Forcipata ohioensis DeLong & Caldwell 1936a:73 [n.sp.]; Metcalf 1968a,6(17):127 [Cat.]
- DISTRIBUTION: United States (Metcalf Cat.)
- Forcipata ortha DeLong & Caldwell
- Forcipata ortha DeLong & Caldwell 1936a:75 [n.sp.]; Metcalf 1968a,6(17):128 [Cat.]
- DISTRIBUTION: United States (Metcalf Cat.)
- Forcipata sicula DeLong & Caldwell
- Forcipata sicula DeLong & Caldwell 1936a:72 [n.sp.]; Metcalf 1968a,6(17):128 [Cat.]
- DISTRIBUTION: United States (Metcalf Cat.)
- Forcipata triquetra DeLong & Caldwell
- Forcipata triquetra DeLong & Caldwell 1936a:72 [n.sp.]; Metcalf 1968a,6(17):128 [Cat.]
- DISTRIBUTION: United States (Metcalf Cat.)
- Frequenamia guerrera DeLong
- Frequenamia guerrera DeLong 1947a: 63 [n.sp.]; Metcalf 1967c, 6(10c): 2088 [Cat.]
- DISTRIBUTION: Mexico (Metcalf Cat.)
- Fridonus concanus Oman
- Fridonus concanus Oman 1949a: 129 [n.sp.]; Metcalf 1967b, 6(10b): 1332 [Cat.]
- DISTRIBUTION: United States (Metcalf Cat.)
- Frigartus frigidus (Ball)
- Athysanus frigidus Ball 1899c: 172 [n.sp.]; Metcalf 1967a, 6(10a): 270 [Cat.]
- DISTRIBUTION: United States, Canada (Metcalf Cat.)
- Frigartus obesus Knull
- Frigartus obesus Knull 1954d: 37 [n.sp.]; Metcalf 1967a, 6(10a): 271 [Cat.]
- DISTRIBUTION: United States (Metcalf Cat.)
- Friscananus intricatus (Ball)
- Thamnotettix intricata Ball 1911a: 198 [n.sp.]; Metcalf 1967b, 6(10b): 1281 [Cat.]
- DISTRIBUTION: United States (Metcalf Cat.)
- Friscananus nugax (Van Duzee)
- Scaphoideus nugax Van Duzee 1925b: 419 [n.sp.]; Metcalf 1967b, 6(10b): 1281 [Cat.]
- DISTRIBUTION: United States (Metcalf Cat.)
- Friscananus rupinatus (Ball)
- Thamnotettix rupinata Ball 1911a: 199 [n.sp.]; Metcalf 1967b, 6(10b): 1281 [Cat.]
- DISTRIBUTION: United States (Metcalf Cat.)
- Friscananus rupinatus brunneus DeLong & Severin
- Friscananus brunneus DeLong & Severin 1948a: 198 [n.subsp. of rupinatus]; Metcalf 1967b, 6(10b): 1282 [Cat.]
- DISTRIBUTION: United States (Metcalf Cat.)
- Friscananus sannio Bliven
- Friscananus sannio Bliven 1955a: 5 [n.sp.]; Metcalf 1967b, 6(10b): 1282 [Cat.]
- DISTRIBUTION: United States (Metcalf Cat.)
- Friscanus friscanus (Ball)
- Errhomenellus friscanus Ball 1909b:182 [n.sp.]; Metcalf 1963c,6(8):18 [Cat.]
- Memnonia simplex Van Duzee 1917a:294 [n.sp.]; Metcalf 1963c,6(8):18 [Cat.]
- DISTRIBUTION: United States (Metcalf Cat.)
- Fulvanus curvilinea Linnavuori
- Fulvanus curvilinea Linnavuori 1955a: 111 [n.sp.]; Metcalf 1967b, 6(10b): 1241 [Cat.]
- DISTRIBUTION: Brazil, Argentina (Metcalf Cat.)
- Funkikonia tuberculata (Kato)
- Ledra tuberculata Kato 1929a:545 [n.sp.]; Metcalf 1962c,6(4):58 [Cat.]
- DISTRIBUTION: Japan, Taiwan (Metcalf Cat.)
- Fusanus griseostriatus Linnavuori
- Fusanus griseostriatus Linnavuori 1955b: 124 [n.sp.]; Metcalf 1967b, 6(10b): 1773 [Cat.]
- DISTRIBUTION: Argentina (Metcalf Cat.)
- Futasujinus candidus (Matsumura)
- Deltocephalus candidus Matsumura 1914a: 208 [n.sp.]; Metcalf 1967b, 6(10b): 1854 [Cat.]
- DISTRIBUTION: Japan, Korea (Metcalf Cat.)