Orr, A., and V. Kalkman. “Two New Species of Papuagrion Ris, 1913 (Odonata: Coenagrionidae) from New Guinea With a Survey of Distribution Records for the Genus ”. Zootaxa, vol. 4173, no. 1, Oct. 2016, pp. 18–28, doi:10.11646/zootaxa.4173.1.2.