Wille, A., and E. Orozco. “Observations on the Founding of a New Colony by <i>Trigona cupira</i≫ (Hymenoptera: Apidae) in Costa Rica”. Revista De Biología Tropical, vol. 22, no. 2, Dec. 1974, pp. 253–287, https://revistas.ucr.ac.cr/index.php/rbt/article/view/26053.