Name Authorship Pages Forms Locality Notes
Pheidole sepulchralis Bingham, 1903 255 s. MYANMAR
Pheidole sepultura Longino, 2019 58, pl. 37 s.w. MEXICO (Chiapas)
Pheidole sericella Viehmeyer, 1914b 33 s.w. NEW GUINEA (Papua New Guinea)
Pheidole servilia Wilson, 2003a 507, figs. s.w. COLOMBIA
Pheidole setosa Fischer et al., 2012 40, figs. 69-71 w. DEMOCRATIC REPUBLIC OF THE CONGO
Pheidole setsukoae Wilson, 2003a 597, figs. s.w. MEXICO (Sinaloa)
Pheidole severini Forel, 1904e 171 s.w. FRENCH GUIANA
Pheidole sexspinosa Mayr, 1870b 977 s.w. TUVALU
Pheidole sexspinosa r. biroi var. ralumensis Forel, 1901c 14 (in text) w. NEW GUINEA (Papua New Guinea)
Pheidole sexspinosa subsp. biroi Emery, 1900b 323 s.w.m. NEW GUINEA (Papua New Guinea)
Pheidole sexspinosa var. fuscescens Emery, 1900b 323 s.w. NEW GUINEA (Papua New Guinea)
Pheidole sharpi Forel, 1902c 169 (diagnosis in key), 188 s.w. INDIA (Tamil Nadu, Maharashtra, Karnataka)
Pheidole sharpi r. hoogwerfi Forel, 1902c 170 (diagnosis in key), 189 s.w.q.m. INDIA (Maharashtra)
Pheidole sicaria Wilson, 2003a 232, figs. s.w. COSTA RICA
Pheidole sigillata Wilson, 2003a 754, figs. s.w. BRAZIL (São Paulo)
Pheidole sikorae Forel, 1891c 223 s.w. MADAGASCAR
Pheidole sikorae var. litigiosa Forel, 1892l 526 s.w.q. MADAGASCAR
Pheidole silenus Smith, 1858a 176 s.w. SINGAPORE
Pheidole silvestrii Emery, 1906c 146 s.w.q. ARGENTINA (Tucumán)
Pheidole silvestrii var. pullula Santschi, 1911b 53 s.w.q. ARGENTINA (Buenos Aires)
Pheidole similigena Wheeler, 1937b 446 s.w. CUBA
Pheidole similis Salata & Fisher, 2020c 49, figs. 22A-F, 27N, 28N s.w. MADAGASCAR
Pheidole simoni Emery, 1893i 266 s. PHILIPPINES (Luzon)
Pheidole simonsi Wilson, 2003a 630, figs. s.w. COSTA RICA
Pheidole simplispinosa Sarnat, 2008 26, figs. 47-49, 68-70, 89-91 s.w.q. FIJI (Koro)
Pheidole sinaitica Mayr, 1862 745 s.w. EGYPT
Pheidole sinaitica subsp. laticeps Mayr, 1904b 6 s.w. EGYPT
Pheidole singaporensis Özdikmen, 2010b 804
Pheidole singularis Smith, 1863a 22 s. INDONESIA (Misool)
Pheidole sitarches Wheeler, 1908h 440 s.w.q. U.S.A. (Texas)
Pheidole sitarches subsp. campestris Creighton, 1950a 189 s.w. U.S.A. (Texas)
Pheidole sitarches subsp. littoralis Cole, 1952b 443 s.w. U.S.A. (Florida)
Pheidole sitarches subsp. rufescens Wheeler, 1908h 443 s.w.q. U.S.A. (Texas)
Pheidole sitarches subsp. rufescens var. campestris Wheeler, 1908h 443 s.w. U.S.A. (Texas)
Pheidole sitarches var. transvarians Wheeler, 1908h 442 s.w. U.S.A. (Texas)
Pheidole sitiens Wilson, 2003a 348, figs. s.w. U.S.A. (Texas)
Pheidole skwarrae Wheeler, 1934g 163 s.w.q. MEXICO (Morelos)
Pheidole smithi Emery, 1887g 464
Pheidole smithii Dalla Torre, 1892 90
Pheidole soesilae Makhan, 2007c 1, figs. 1, 2 s. SURINAME
Pheidole sofia Salata & Fisher, 2020b 143, figs. 54A-F, 64L, 67D s.w. MADAGASCAR
Pheidole soritis Wheeler, 1908h 439 s.w. U.S.A. (New Mexico)
Pheidole spadonia Wheeler, 1915b 400 s.w. U.S.A. (Arizona)
Pheidole sparsa Salata & Fisher, 2020b 147, figs. 55A-F, 64M, 67E s.w. MADAGASCAR
Pheidole sparsisculpta Longino, 2009 77, fig. 22 s.w. COSTA RICA
Pheidole spathicornis Wilson, 2003a 160, figs. s.w. MEXICO (Morelos)
Pheidole spathifera Forel, 1902c 168 (diagnosis in key), 187 s.w.q.m. SRI LANKA, INDIA (Tamil Nadu, Kerala)
Pheidole spathifera var. aspatha Forel, 1902c 169 (diagnosis in key), 188 s.w. INDIA (Assam, Kerala)
Pheidole spathifera var. yerburyi Forel, 1902c 168 (diagnosis in key), 188 s.w.q. SRI LANKA
Pheidole spathipilosa Wilson, 2003a 350, figs. s.w. COSTA RICA