Formica densiventris Viereck, 1903 valid
Formica fusca var. densiventris Viereck, 1903: 74 (w.) U.S.A. Nearctic.
  • Cole, 1954a: 90 (m.).
  • Junior synonym of Formica subaenescens: Wheeler, 1913i: 504.
  • Revived from synonymy as subspecies of Formica fusca: Brown, 1947: 7.
  • Raised to species: Creighton, 1950a: 499.
  • Senior synonym of Formica spicata: Cole, 1954a: 89; Cole, 1955b: 50; of Formica rasilis: MacKay et al., 1988: 114.
Junior synonyms
Citations