Ahmed, S., Banerjee, D. and Julka, J. 2026. A new species of the genus Perionyx Perrier, 1872 (Clitellata: Megascolecidae) and two new records from Eastern Himalayas, India. Zootaxa. 5763, 3 (Mar. 2026), 371–390. DOI:https://doi.org/10.11646/zootaxa.5763.3.4.