Tan, M. K., J. B. Baroga-Barbecho, and S. A. Yap. “Taxonomic Notes on Trigonidium And Related Groups With One New Species from the Philippines (Orthoptera: Trigonidiidae; Trigonidiinae)”. Zootaxa, vol. 4564, no. 2, Mar. 2019, pp. 573–587, doi:10.11646/zootaxa.4564.2.13.