• Wheeler, 1910h: 238 (w.m.)
• Combination in Lasius (Chthonolasius): Emery, 1925d: 235
• Raised to species: Creighton, 1950a: 424
• See also: Wheeler, 1917h: 167; Wilson, 1955a: 175

Obsolete combinations

• Lasius umbratus subumbratus

Citations

• Creighton, W. S. 1950a. The ants of North America. Bulletin of the Museum of Comparative Zoology 104:1-585. PDF
• Emery, C. 1925d. Hymenoptera. Fam. Formicidae. Subfam. Formicinae. Genera Insectorum 183:1-302. PDF
• Viereck, H. L. 1903. Hymenoptera of Beulah, New Mexico. [part]. Transactions of the American Entomological Society 29:56-87. PDF
• Wheeler, W. M. 1910h. The North American forms of Lasius umbratus Nylander. Psyche (Cambridge) 17:235-243. PDF
• Wheeler, W. M. 1917h. The temporary social parasitism of Lasius subumbratus Viereck. Psyche (Cambridge) 24:167-176. PDF
• Wilson, E. O. 1955a. A monographic revision of the ant genus Lasius. Bulletin of the Museum of Comparative Zoology 113:1-201. PDF