Johnson, R. A. “A New Species of Seed-Harvester Ant in the Genus Pogonomyrmex (P. brevibarbis Group) With Ergatoid Queens and Intercastes from the Andes of Argentina (Hymenoptera: Formicidae: Myrmicinae)”. Zootaxa, vol. 5693, no. 2, Sept. 2025, pp. 223-42, doi:10.11646/zootaxa.5693.2.5.