• Lectotype designation: Heterick, 2006: 103.
• Combination in Monomorium: Mayr, 1862: 753.
• Combination in Monomorium (Xeromyrmex): Emery, 1916a: 161; Wheeler, 1922: 871.
• Subspecies of Monomorium salomonis: Forel, 1890b: lxxv; Saunders, 1890: 204; Forel, 1904d: 5; Forel, 1907d: 18; Emery, 1908j: 676; Santschi, 1908: 517; Forel, 1910a: 23; Karavaiev, 1912a: 3; Krausse, 1912c: 166; Santschi, 1913c: 306; Santschi, 1914d: 353; Emery, 1916a: 161; Arnold, 1916: 224; Wheeler & Mann, 1916: 170; Santschi, 1921e: 170; Wheeler, 1922: 871; Emery, 1922c: 178; Wheeler, 1923d: 4; Santschi, 1923e: 281; Emery, 1924a: 8; Emery, 1924c: 165; Lomnicki, 1925b: 1; Wheeler, 1926a: 3; Menozzi, 1926b: 182; Kutter, 1927a: 99; Wheeler, 1927g: 107; Donisthorpe, 1942a: 29; Wellenius, 1955: 8; Ceballos, 1956: 305; Báez & Ortega, 1978: 190; Kempf, 1972b: 144.
• Status as species: Mayr, 1862: 753; Roger, 1862c: 294; Roger, 1863b: 31; Mayr, 1863a: 429; Dours, 1873: 169; André, 1874c: 199 (in key); Emery & Forel, 1879: 456; André, 1881c: 65; Emery, 1881b: 531 (in key); Emery, 1882b: 450; André, 1883a: 336 (in key); Emery, 1886b: 363; Forel, 1886e: clxviii; Emery, 1892: 117; Dalla Torre, 1893: 70; Emery, 1893e: 82; Emery, 1895i: 24; Mayr, 1895: 133; Bondroit, 1918: 143; Santschi, 1927e: 240; Menozzi, 1929b: 4; Santschi, 1931a: 5; Grandi, 1935: 100; Santschi, 1936a: 40; Finzi, 1936: 177; Finzi, 1939a: 158; Finzi, 1940: 161; Arnold, 1944: 14 (in key); Bernard, 1956b: 259; Baroni Urbani, 1964c: 154; Cagniant, 1964: 89; Ettershank, 1966: 92; Baroni Urbani, 1968e: 450; Collingwood & Yarrow, 1969: 66; Cagniant, 1970a: 418; Bernard, 1971: 7; Baroni Urbani, 1971c: 92; Baroni Urbani, 1976b: 213; Collingwood, 1978: 82 (in key); Barquín, 1981: 196; Schembri & Collingwood, 1981: 431; Collingwood, 1985: 272; Bolton, 1987: 360 (redescription); Agosti & Collingwood, 1987a: 55; Agosti & Collingwood, 1987b: 273 (in key); Kugler, 1988: 258; Brandão, 1991: 357; Collingwood, 1993b: 194; Hohmann et al., 1993: 155; Bolton, 1995b: 267; Mei, 1995: 764; Poldi et al., 1995: 4; Collingwood & Agosti, 1996: 356; Espadaler, 1997g: 30; Zhou, 2001a: 114; Heterick, 2006: 103 (redescription); Cagniant, 2006: 196; Petrov, 2006: 94 (in key); Wetterer et al., 2007: 31; Wetterer et al., 2007: 16; Fernández, 2007b: 138; Gratiashvili & Barjadze, 2008: 140; Legakis, 2011: 15; Collingwood et al., 2011: 438; Borowiec & Salata, 2012: 519; Guénard & Dunn, 2012: 46; Kiran & Karaman, 2012: 21; Hita Garcia et al., 2013: 213; Borowiec, 2014: 126; Sharaf et al., 2015: 54; Bharti et al., 2016: 40; Lebas et al., 2016: 304; Salata & Borowiec, 2018c: 47; Sharaf et al., 2018: 26; Dias et al., 2020: 78; Sharaf et al., 2020: 548; Arcos et al., 2022: 12; Sharaf et al., 2022: 66; Lebas, 2022: 188; Sharaf et al., 2024: 1752; Galkowski & Cagniant, 2024: 140; Borowiec & Salata, 2025a: 264 (redescription).
• Senior synonym of Monomorium subopacum adoneum: Heterick, 2006: 103.
• Senior synonym of Monomorium subopacum apuleii: Heterick, 2006: 103.
• Senior synonym of Monomorium cabrerae: Bolton, 1987: 360; Bolton, 1995b: 267; Heterick, 2006: 103.
• Senior synonym of Monomorium subopacum ebraicum: Heterick, 2006: 103.
• Senior synonym of Monomorium glyciphila: Bolton, 1987: 360; Bolton, 1995b: 267; Heterick, 2006: 103; Borowiec & Salata, 2025a: 264.
• Senior synonym of Monomorium subopacum intermedium: Hohmann et al., 1993: 155; Bolton, 1995b: 267; Zhou, 2001a: 115; Heterick, 2006: 103; Lebas, 2022: 188.
• Senior synonym of Monomorium subopacum italica: Baroni Urbani, 1968e: 450; Baroni Urbani, 1971c: 92; Bolton, 1987: 360; Bolton, 1995b: 267; Heterick, 2006: 103; Borowiec & Salata, 2025a: 264.
• Senior synonym of Monomorium subopacum liberta: Bolton, 1987: 360; Bolton, 1995b: 267; Zhou, 2001a: 115; Heterick, 2006: 103.
• Senior synonym of Monomorium mediterraneum: Mayr, 1862: 753; Roger, 1862c: 294; Mayr, 1863a: 429; Roger, 1863b: 31; Dours, 1873: 169; André, 1874c: 204 (in list); Emery & Forel, 1879: 456; Dalla Torre, 1893: 70; Emery, 1916a: 161; Emery, 1922c: 178; Wheeler, 1922: 871; Santschi, 1927e: 241; Bolton, 1987: 360; Bolton, 1995b: 267; Zhou, 2001a: 114; Heterick, 2006: 103; Borowiec & Salata, 2025a: 264.
• Senior synonym of Monomorium mintiribe: Sharaf et al., 2015: 54.
• Senior synonym of Monomorium cabrerae obscuripes: Santschi, 1927e: 241; Bolton, 1987: 360; Bolton, 1995b: 267; Zhou, 2001a: 114; Heterick, 2006: 103.
• Senior synonym of Monomorium surcoufi: Bolton, 1987: 360; Bolton, 1995b: 267; Zhou, 2001a: 114; Heterick, 2006: 103.
• Material of the unavailable names Monomorium salomonis subopacum claveaui, Monomorium salomonis subopacum santschiellum, Monomorium salomonis subopacum senegalensis referred here by Bolton, 1987: 360.

Junior synonyms

• Monomorium cabrerae (Santschi, 1919)
  Obsolete combination(s): Paraphacota cabrerae
• Monomorium cabrerae obscuripes (Santschi, 1921)
  Obsolete combination(s): Paraphacota cabrerae obscuripes
• Monomorium glyciphila (Smith, 1858)
  Obsolete combination(s): Myrmica glyciphila
• Monomorium mediterraneum Mayr, 1861
• Monomorium mintiribe Collingwood & Agosti, 1996
• Monomorium subopacum adoneum Santschi, 1936
• Monomorium subopacum apuleii Santschi, 1927
• Monomorium subopacum ebraicum Menozzi, 1933
• Monomorium subopacum intermedium Santschi, 1927
• Monomorium subopacum italica Baroni Urbani, 1964
• Monomorium subopacum liberta Santschi, 1927
• Monomorium surcoufi (Santschi, 1919)
  Obsolete combination(s): Paraphacota surcoufi

Obsolete combinations

• Monomorium salomonis subopacum
• Myrmica subopaca

Citations

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