Monomorium subopacum

Distribution
This taxon was described from Portugal (Madeira Island).

Nomenclature

 * glyciphila. Myrmica glyciphila Smith, F. 1858b: 125 (w.) SRI LANKA. Combination in Monomorium: Roger, 1863b: 32; in M. (Xeromyrmex): Emery, 1922e: 179. Junior synonym of subopacum: Bolton, 1987: 360.
 *  subopacum. Myrmica subopaca Smith, F. 1858b: 127 (w.q.) PORTUGAL (Madeira I.). Combination in Monomorium: Mayr, 1862: 753; in M. (Xeromyrmex): Wheeler, W.M. 1922a: 871. Subspecies of salomonis: Forel, 1890a: lxxv; Forel, 1907a: 18; Emery, 1908h: 676; Forel, 1910a: 23; Arnold, 1916: 224; Santschi, 1921e: 170; Santschi, 1923e: 281; Menozzi, 1926b: 182; Wheeler, W.M. 1927g: 107. Status as species: Emery, 1881b: 531; Emery, 1893c: 82; Mayr, 1895: 133; Bondroit, 1918: 143; Santschi, 1927d: 240; Santschi, 1931a: 4; Bolton, 1987: 360. Senior synonym of mediterraneum: Mayr, 1862: 753; Bolton, 1987: 360; of obscuripes: Santschi, 1927d: 241; of italica: Baroni Urbani, 1968b: 450; of cabrerae, glyciphila, liberta, surcoufi and material of the unavailable name senegalensis referred here: Bolton, 1987: 360; of intermedium Hohmann, La Roche, et al., 1993: 155; of adoneum, apuleii, ebraicum: Heterick, 2006: 103. Current subspecies: nominal plus planidorsum.
 * mediterraneum. Monomorium mediterraneum Mayr, 1861: 72 (diagnosis in key) (w.q.) SPAIN. Santschi, 1936a: 40 (m.). Subspecies of subopacum: Santschi, 1936a: 40. Junior synonym of subopacum: Mayr, 1862: 753; Roger, 1862c: 294; Bolton, 1987: 360.
 * cabrerae. Paraphacota cabrerae Santschi, 1919g: 405, fig. 1 (m.) SPAIN (Canary Is). Santschi, 1927d: 242 (w.q.). Combination in Monomorium: Santschi, 1927d: 241. Subspecies of subopacum: Santschi, 1927d: 241. Junior synonym of subopacum: Bolton, 1987: 360.
 * surcoufi. Paraphacota surcoufi Santschi, 1919d: 90, fig. 1 (m.) ALGERIA. Santschi, 1927d: 243 (w.q.). Combination in Monomorium: Santschi, 1927d: 243. Subspecies of subopacum: Santschi, 1927d: 243. Junior synonym of subopacum: Bolton, 1987: 360.
 * obscuripes. Paraphacota cabrerae st. obscuripes Santschi, 1921b: 424 (m.) SPAIN (Canary Is). Santschi, 1927d: 241 (w.q.). Combination in Monomorium: Santschi, 1927d: 241. Subspecies of subopacum: Santschi, 1936a: 40. Junior synonym of subopacum: Santschi, 1927d: 241; Bolton, 1987: 360.
 * apuleii. Monomorium (Xeromyrmex) subopacum var. apuleii Santschi, 1927d: 243 (w.q.m.) TUNISIA. Junior synonym of subopacum: Heterick, 2006: 103.
 * intermedium. Monomorium (Xeromyrmex) subopacum var. intermedium Santschi, 1927d: 242 (w.) SPAIN (Canary Is). [First available use of Monomorium (Xeromyrmex) salomonis subsp. subopacum var. intermedium Wheeler, W.M. 1927g: 108; unavailable name.] Junior synonym of subopacum: Hohmann, La Roche, et al., 1993: 155.
 * liberta. Monomorium (Xeromyrmex) subopacum var. liberta Santschi, 1927d: 243 (w.) SENEGAL. [First available use of Monomorium (Xeromyrmex) salomonis st. subopacum var. liberta Santschi, 1921e: 170; unavailable name.] Junior synonym of subopacum: Bolton, 1987: 360.
 * ebraicum. Monomorium (Xeromyrmex) subopacum var. ebraicum Menozzi, 1933b: 62 (w.m.) ISRAEL. Junior synonym of subopacum: Heterick, 2006: 103.
 * adoneum. Monomorium (Xeromyrmex) subopacum var. adoneum Santschi, 1936a: 41, fig. 22 (w.) LEBANON (caption to fig. 22 is misspelled adonis). [Monomorium (Xeromyrmex) subopacum var. adoneum Santschi, 1934d: 277. Nomen nudum.] Junior synonym of subopacum: Heterick, 2006: 103.
 * pestiferum. Monomorium (Xeromyrmex) salomonis st. pestiferum Santschi, 1936a: 57, figs. 20, 28, 30 (w.q.m.) ALGERIA. Junior synonym of obscuriceps: Ettershank, 1966: 91.
 * italica. Monomorium (Xeromyrmex) subopacum subsp. italica Baroni Urbani, 1964c: 154, figs. 2, 3 (w.) ITALY. Junior synonym of subopacum: Baroni Urbani, 1968b: 450.