Ragmus Distant, 1910c, Genus – synonym of Moissonia Reuter, 1894, Genus
Ragwelellus Odhiambo, 1962, Genus
Ramivena Fan & G.Q. Liu, 2010, Genus
Ranatra Fabricius, 1790, Genus
Ranatrinae Douglas & Scott, 1865, Subfamilia
Ranturra Distant, 1920b, Genus – synonym of Mutusca Stål, 1865, Genus
Ranturra Distant, 1920b, Genus – synonym of Mutusca Stål, 1865, Genus
Rauniella Rosenzweig, 1997, Genus
Raunocoris Baena & Alonso-Zarazaga, 2009, Genus – synonym of Alpagut Kıyak, 1995, Genus
Reduviidae Latreille, 1807, Familia
Reduviinae Latreille, 1807, Subfamilia
Reduviinae Stål, 1866, Subfamilia – synonym of Harpactorinae Amyot & Serville, 1843, Subfamilia
Reduviolinae Reuter, 1908, Subfamilia – synonym of Nabinae A. Costa, 1853, Subfamilia
Reduvius Fabricius, 1775, Genus
Reduvius: Stål, 1867, Genus – misidentification of Rhynocoris Hahn, 1833, Genus
Reggania Dispons, 1964g, Genus – synonym of Anonychiella Reuter, 1912, Genus
Remaudiereana Hoberlandt, 1954, Genus
Renardia Jakovlev, 1876, Genus – synonym of Lelia Walker, 1867, Genus
Reuteriessa Usinger, 1951a, Genus – synonym of Cyrtorhinus Fieber, 1858, Genus
Reuteriola Hsiao in Hsiao & Meng, 1963 – synonym of Opuna Kirkaldy, 1902, Genus
Reuterista Kirkaldy, 1904, Genus
Rhabdocoris Kolenati, 1845, Genus – synonym of Leptocorisa Latreille, 1829, Genus
Rhabdomiris Wagner, 1968, Genus
Rhabdomorphus Bergroth, 1918, Genus – basionym of Macropes Motschulsky, 1859, Genus
Rhabdoscytus Horváth, 1923, Genus
Rhacognathus Fieber, 1860, Genus
Rhacostethus Fieber, 1860, Genus – synonym of Staria Dohrn, 1860, Genus
Rhagadotarsinae Lundblad, 1933, Subfamilia
Rhagadotarsus Breddin, 1905, Genus
Rhagoveliinae China & Usinger, 1949, Subfamilia
Rhamphocoris Kirkaldy, 1901, Genus
Rhaphidogaster Agassiz, 1846, Genus – misspelled name of Rhaphigaster Laporte, 1833, Genus
Rhaphidosoma Amyot & Serville, 1843, Genus
Rhaphigaster Laporte, 1833, Genus
Rhaphigastridae Amyot & Serville, 1843, Familia – synonym of Pentatomidae Leach, 1815, Familia
Rhinocoris Kolenati, 1857, Genus – misspelled name of Rhynocoris Hahn, 1833, Genus
Rhinocylapidius Poppius, 1915, Genus
Rhinofulvius Reuter, 1902, Genus
Rhinomiris Kirkaldy, 1902, Genus
Rhiobia Bergroth, 1918, Genus – synonym of Pylorgus Stål, 1874, Genus
Rhochmogaster Karsch, 1892, Genus – synonym of Ectrichodia Lepeletier & Serville, 1825, Genus
Rhodoclia Distant, 1909, Genus – synonym of Marcius Stål, 1865, Genus
Rhopaliceschatus Reuter, 1903, Genus
Rhopalidae Amyot & Serville, 1843, Familia
Rhopalinae Amyot & Serville, 1843, Subfamilia
Rhopalomiris Yasunaga, Yamada & Tsai, 2023, Genus
Rhopalotomus Fieber, 1858, Genus – synonym of Capsus Fabricius, 1803, Genus
Rhopalus Schilling, 1827, Genus
Rhyacobates Esaki, 1923, Genus
Rhynarius Hahn, 1832, Genus – synonym of Anthocoris Fallén, 1814, Genus
Rhynchocoris Westwood, 1837, Genus
Rhyparochrominae Amyot & Serville, 1843, Subfamilia
Rhyparochromus Hahn, 1826, Genus
Rhyparochromus: Curtis, 1836, Genus – misidentification of Megalonotus Fieber, 1860, Genus
Rhyparothesus Scudder, 1962, Genus
Rhysostethus Hsiao, 1973, Genus
Ribautia Stichel, 1956, Genus – synonym of Ribautocapsus Wagner, 1962, Genus
Ribauticoris Stichel, 1958, Genus – synonym of Notochilus Fieber, 1864, Genus
Ribautocapsus Wagner, 1962, Genus
Risbecocoris Izzard, 1949, Genus
Rodriguaria China, 1925c, Genus – synonym of Hallodapus Fieber, 1858, Genus
Rolstoniellus Rider, 1997, Genus
Romicpus Reed, 1900, Genus – synonym of Ischnodemus Fieber, 1837, Genus
Rotundocoris Bai & Heiss, 2019, Genus
Roudairea Puton & Reuter, 1886, Genus
Rubrocuneocoris Schuh, 1984, Genus
Rudebeckocoris Miller, 1956, Genus – synonym of Putoniola Bergroth, 1898, Genus
Rupisalda Polhemus, 1985, Genus
Ruwaba Linnavuori, 1975, Genus
Ryparocoris Schummel, 1827, Genus – synonym of Reduvius Fabricius, 1775, Genus