Lee, Y. J. “Additional Records of Cicadas (Hemiptera: Cicadidae) to the Fauna of Mindanao, Philippines, With the Description of Three New Species and a Key to the Species of Champaka Distant”. Zootaxa, vol. 4007, no. 4, Aug. 2015, pp. 545–556, doi:10.11646/zootaxa.4007.4.5.