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Pimvichai, Piyatida; Henrik Enghoff, Somsak Panha, & Thierry Backeljau |title=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) |journal=European Journal of Taxonomy |date=2016 |issue=199 |doi=10.5852/ejt.2016.199   cc-by-3.0