S. Sanabria-Urbán, H. Song, K. Oyama, A. González-Rodríguez, and R. C. D. Castillo, “Integrative taxonomy reveals cryptic diversity in neotropical grasshoppers: taxonomy, phylogenetics, and evolution of the genus Sphenarium Charpentier, 1842 (Orthoptera: Pyrgomorphidae)”, Zootaxa, vol. 4274, no. 1, pp. 1–86, Jun. 2017.