Name Authorship Pages Forms Locality Notes
Pheidole ridicula Wheeler, 1916i 29, fig. 1 s. U.S.A. (Texas)
Pheidole rima Longino, 2019 55, pl. 35 s.w.q. MEXICO (Veracruz)
Pheidole rinae Emery, 1900 687 s. INDONESIA (Sumatra)
Pheidole rinae r. tipuna Forel, 1912a 68 s.w. TAIWAN
Pheidole rinae subsp. hongkongensis Wheeler, 1928c 11 s.w.q. CHINA (Hong Kong)
Pheidole rinae subsp. incensa Wheeler, 1928c 13 s.w. CHINA (Fujian)
Pheidole rinae subsp. taipoana Wheeler, 1928c 12 s.w. CHINA (Hong Kong)
Pheidole rinae var. mala Forel, 1911b 205 s.w. INDONESIA (Java)
Pheidole risi subsp. trachyderma Emery, 1906c 148 s.w.q. ARGENTINA (Misiones)
Pheidole risii Forel, 1892a 38 s.w.q.m. ARGENTINA (Buenos Aires)
Pheidole riveti Santschi, 1911i 278 s.w.q. ECUADOR
Pheidole riveti var. inflexa Santschi, 1923d 58 s. ECUADOR
Pheidole roberti Forel, 1902c 183 (diagnosis in key), 198 s.w. INDIA (Karnataka)
Pheidole rogeri Emery, 1896g 64 s. COSTA RICA
Pheidole rogeripolita Longino, 2019 56, pl. 58 s.w.q. COSTA RICA
Pheidole rogersi Forel, 1902c 182 (diagnosis in key), 197 s.w. INDIA
Pheidole rogersi var. taylori Forel, 1902c 182 (diagnosis in key), 198 s.w. INDIA (Odisha)
Pheidole rohani Santschi, 1925h 160, fig. 11 w. ANGOLA
Pheidole rohani st. pellax Santschi, 1930b 63, fig. 2c,d s.w. ANGOLA
Pheidole rojasae Vázquez-Franco, 2024 203, figs. 7-9, 10C s.w.q. MEXICO (Puebla)
Pheidole rosae Forel, 1901m 63 s. BRAZIL (Santa Catarina)
Pheidole rosula Wilson, 2003a 743, figs. s.w. ARGENTINA (Buenos Aires)
Pheidole rotundata Forel, 1894b 92 s.w. MOZAMBIQUE
Pheidole rotundata st. costauriensis Santschi, 1914a 433 s. GHANA
Pheidole rotundata subsp. ilgii Forel, 1907f 139 w.q.m ETHIOPIA
Pheidole rotundiceps Wilson, 2003a 744, figs. s. ECUADOR
Pheidole roushae Wilson, 2003a 344, figs. s.w. MEXICO (Veracruz)
Pheidole rubiceps Wilson, 2003a 345, figs. s.w. VENEZUELA
Pheidole rubra Smith, 1860b 111 s.w. INDONESIA (Bacan)
Pheidole rubrobrunea Dalla Torre, 1892 91
Pheidole rufipilis Forel, 1908 371 s.w. BRAZIL (São Paulo)
Pheidole rufipilis st. industa Santschi, 1939e 316, fig. 3 s.w. URUGUAY
Pheidole rufipilis var. dione Forel, 1913m 225 s.w. ARGENTINA (Jujuy)
Pheidole rufipilis var. divexa Forel, 1908 372 s.w.m. BRAZIL (São Paulo)
Pheidole rufipilis var. laevinota Forel, 1908 371 (in text) w. BRAZIL (São Paulo)
Pheidole rugaticeps Emery, 1877c 375 s.w.q. ERITREA
Pheidole rugaticeps var. arabs Emery, 1881b 535 s.w.q. YEMEN
Pheidole rugiceps Wilson, 2003a 620, figs. s.w. COSTA RICA
Pheidole rugifera Eguchi, 2001b 106, fig. 43 s.w. BORNEO (East Malaysia: Sarawak)
Pheidole rugifrons Pergande, 1896 880 s. MEXICO (Nayarit)
Pheidole rugithorax Eguchi, 2008 84, figs. 23a-g s.w.q. VIETNAM
Pheidole rugocephala Salata & Fisher, 2020a 98, figs. 36A–F, 85U, 88E s.w.q. MADAGASCAR
Pheidole rugofitarata Salata & Fisher, 2020a 128, figs. 47A-C, 85V, 88F s. MADAGASCAR
Pheidole rugosa Smith, 1858a 175 s. SRI LANKA
Pheidole rugulosa Gregg, 1959 26 s.w.q.m. U.S.A. (Arizona)
Pheidole ruida Wilson, 2003a 499, figs. s.w. PANAMA (Barro Colorado)
Pheidole rutilana Wilson, 2003a 746, figs. s.w. BRAZIL (Pará)
Pheidole ryukyuensis Ogata, 1982 193, figs. 1-5 s.w.q. JAPAN
Pheidole sabahna Eguchi, 2000 688, figs. 1-10 s.w.m. BORNEO (East Malaysia: Sabah)
Pheidole sabella Wilson, 2003a 500, figs. s. PERU