Massa, B., and P. Fontana. “Supraspecific Taxonomy of Palaearctic Platycleidini With Unarmed Prosternum: A Morphological Approach (Orthoptera: Tettigoniidae, Tettigoniinae)”. Zootaxa, vol. 2837, no. 1, Apr. 2011, pp. 1–47, doi:10.11646/zootaxa.2837.1.1.