Pimvichai, Piyatida, Henrik Enghoff, and Somsak Panha. 2009. “A Revision of the Thyropygus Allevatus group. Part 2: the T. Bifurcus Subgroup (Diplopoda, Spirostreptida, Harpagophoridae)”. Zootaxa 2165 (1). Auckland, New Zealand:1–15. https://doi.org/10.11646/zootaxa.2165.1.1.