Pimvichai, P.; Enghoff, H.; Panha, S.; Backeljau, T. A Revision of the Thyropygus Allevatus Group. Part V: Nine New Species of the Extended Opinatus Subgroup, Based on Morphological and DNA Sequence Data (Diplopoda: Spirostreptida: Harpagophoridae). EJT 2016.