• Lectotype designation: Ward, 1989a: 419.
• Wheeler, 1905c: 86 (q.m.); Wheeler & Bailey, 1920: 260 (l.); Wheeler & Wheeler, 1973d: 207 (l.).
• Combination in Leptalea: Smith, 1951c: 788.
• Combination in Pseudomyrmex: Wheeler & Wheeler, 1956: 384.
• Status as species: Smith, 1877b: 61; Emery, 1890b: 65; Forel, 1893j: 390; Emery, 1895d: 269; Forel, 1899b: 88; Wheeler, 1905c: 85 (redescription); Forel, 1906d: 228; Forel, 1908a: 65; Wheeler, 1910a: 562; Wheeler, 1911a: 22; Forel, 1911g: 278; Forel, 1912h: 23; Santschi, 1913h: 36; Wheeler, 1913b: 484; Wheeler & Mann, 1914: 18; Mann, 1916: 427; Wheeler, 1918b: 24; Mann, 1920b: 405; Emery, 1921c: 32; Wheeler, 1922e: 4; Menozzi, 1927c: 267; Smith, 1930a: 2; Wheeler, 1932a: 4; Wheeler, 1934f: 139; Menozzi, 1935b: 191; Wheeler, 1935g: 16; Wheeler, 1942: 165; Creighton, 1950a: 79; Smith, 1951c: 788; Creighton, 1957b: 18; Smith, 1958c: 112; Wilson, 1964b: 4; Smith, 1967a: 348; Kempf, 1972b: 217; Kempf & Lenko, 1976: 62; Smith, 1979: 1346; Ward, 1985b: 227 (redescription); Ward, 1989a: 419 (redescription); Deyrup et al., 1989: 94; Brandão, 1991: 375; Ward, 1992: 81 (in table); Bolton, 1995b: 372; Ward, 1999b: 519 (redescription); Deyrup, 2003: 46; Wild, 2007b: 40; Branstetter & Sáenz, 2012: 264; Bezděčková et al., 2015: 125; Deyrup, 2017: 41; Ward, 2019: 1103.
• Senior synonym of Pseudomyrmex allidora: Ward, 1989a: 419; Brandão, 1991: 376; Bolton, 1995b: 372.
• Senior synonym of Pseudomyrmex alliodorae: Ward, 1989a: 419; Brandão, 1991: 376; Bolton, 1995b: 372.
• Senior synonym of Pseudomyrmex elongata tandem: Creighton, 1957b: 18; Kempf, 1972b: 218; Smith, 1979: 1346; Ward, 1985b: 227; Ward, 1989a: 419; Bolton, 1995b: 372.

Junior synonyms

• Pseudomyrmex allidora (Enzmann, 1944)
  Obsolete combination(s): Pseudomyrma allidora
• Pseudomyrmex alliodorae (Wheeler, 1942)
  Obsolete combination(s): Pseudomyrma alliodorae
• Pseudomyrmex elongata tandem (Forel, 1906)
  Obsolete combination(s): Pseudomyrma elongata tandem

Obsolete combinations

• Pseudomyrma elongata

Citations

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