• Lectotype designation: Seifert, 1990: 6.
• [Also described as new, but Formicina (Formicina) bicornis subsp. distinguenda Emery, 1916a: 242, 246 (diagnosis in key).]
• Karavaiev, 1936: 214 (m.).
• Combination in Lasius: Müller, 1923b: 13.
• Combination in Lasius (Chthonolasius): Emery, 1925d: 234.
• Junior synonym of Lasius umbratus: Wilson, 1955a: 151; Bernard, 1967a: 363; Smith, 1979: 1439.
• Subspecies of Lasius bicornis: Emery, 1916a: 242; Menozzi, 1918: 87.
• Subspecies of Lasius umbratus: Emery, 1922b: 13; Emery, 1925d: 234; Karavaiev, 1936: 214 (redescription); Stärcke, 1937: 47; Pisarski, 1975: 39.
• Status as species: Bondroit, 1918: 32; Müller, 1923a: 75; Müller, 1923b: 130; Stärcke, 1926a: 123 (in key); Zimmermann, 1935: 52; Consani & Zangheri, 1952: 44; Pisarski, 1969a: 231; Pisarski, 1969b: 306; Baroni Urbani, 1971c: 215; Collingwood, 1978: 90 (in key); Collingwood, 1979: 102; Agosti & Collingwood, 1987a: 58; Agosti & Collingwood, 1987b: 282 (in key); Seifert, 1988a: 149 (redescription); Seifert, 1990: 5; Arakelian, 1994: 119; Radchenko, 1994b: 115 (in key); Bolton, 1995b: 222; Poldi et al., 1995: 8; Espadaler, 1997g: 28; Czechowski et al., 2002: 111; Radchenko, 2005b: 165; Csősz & Markó, 2005: 231; Bračko, 2006: 148; Markó et al., 2006: 68; Petrov, 2006: 106 (in key); Bračko, 2007: 20; Pfeiffer et al., 2007: 4; Seifert, 2007: 283; Werner & Wiezik, 2007: 142; Gratiashvili & Barjadze, 2008: 135; Casevitz-Weulersse & Galkowski, 2009: 483; Lapeva-Gjonova et al., 2010: 37; Boer, 2010: 38; Csősz et al., 2011: 58; Karaman, 2011b: 93; Legakis, 2011: 26; Borowiec & Salata, 2012: 499; Czechowski et al., 2012: 276; Kiran & Karaman, 2012: 12; Borowiec, 2014: 85; Lebas et al., 2016: 206; Radchenko, 2016: 375; Steiner et al., 2017: 11; Salata & Borowiec, 2018c: 45; Seifert, 2018: 286; Werner et al., 2018: 6; Borowiec & Salata, 2022: 214 (redescription); Bračko, 2023: 142.
• Senior synonym of Lasius hybrida: Stärcke, 1937: 57; Seifert, 1988a: 149; Seifert, 1990: 6, 10; Bolton, 1995b: 222; Radchenko, 2016: 375.
• Senior synonym of Lasius umbratus nuda: Seifert, 1990: 5, 10; Bolton, 1995b: 222; Casevitz-Weulersse & Galkowski, 2009: 483; Radchenko, 2016: 375.
• Material of the unavailable name Lasius umbratus distinguendus cereomicans referred here by Seifert, 1990: 10; Bolton, 1995b: 222.

Junior synonyms

• Lasius hybrida (Bondroit, 1918)
  Obsolete combination(s): Formicina distinguenda hybrida
• Lasius umbratus nuda (Bondroit, 1917)
  Obsolete combination(s): Formicina umbrata nuda

Obsolete combinations

• Formicina distinguenda
• Formicina umbrata distinguenda
• Lasius umbratus distinguendus

Citations

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