Name Authorship Pages Forms Locality Notes
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
Pheidole specularis Wilson, 2003a 510, figs. s.w. COSTA RICA
Pheidole speculifera Emery, 1877c 373 s.w. ERITREA
Pheidole speculifera var. ascarus Emery, 1901e 62 s. ERITREA
Pheidole speculifera var. bispecula Santschi, 1930a 58 w. DEMOCRATIC REPUBLIC OF CONGO
Pheidole sperata Forel, 1915a 29 s.w. INDONESIA (Sumatra)
Pheidole sphaerica Wilson, 2003a 755, figs. s. COLOMBIA
Pheidole spielbergi Emery, 1888c 354 s.w. BRAZIL (Rio Grande do Sul)
Pheidole spilota Wilson, 2003a 233, figs. s.w. COLOMBIA
Pheidole spinicornis Eguchi, 2001b 116, fig. 48 s.w. BORNEO (East Malaysia: Sabah)
Pheidole spininodis Mayr, 1887 591, 605 (diagnoses in keys) s.w. ARGENTINA (Buenos Aires)
Pheidole spininodis var. lucifuga Santschi, 1923d 56 s.w.q. ARGENTINA (Catamarca)
Pheidole spininodis var. pencosensis Forel, 1914d 271 s.w.q.m. ARGENTINA (San Luis)
Pheidole spininodis var. solaris Santschi, 1929d 287 s.w.q.m. ARGENTINA (Catamarca)
Pheidole spinulosa Forel, 1910f 438 s.w.q.m. LESOTHO