Von Ellenrieder, N., and R. W. Garrison. “Oreiallagma Gen. Nov. with a Redefinition of Cyanallagma Kennedy 1920 and Mesamphiagrion Kennedy 1920, and the Description of M. dunklei Sp. Nov. and M. ecuatoriale Sp. Nov. From Ecuador (Odonata: Coenagrionidae)”. Zootaxa, vol. 1805, no. 1, June 2008, pp. 1–51, doi:10.11646/zootaxa.1805.1.1.