Probstmayria bengalensis n.sp. (Cosmocercoidea: Atractidae) in captive Indian one horned rhinoceros (Rhinoceros unicornis) from Alipore Zoological Garden, Calcutta, West Bengal, India

摘要

Nematode specimens collected from the faeces of the Indian one horned Rhinoceros (Rhinoceros unicornis) in the Alipore Zoological Garden, Calcutta, India are diagnosed as a new species under genus Probstmayria and named as Probstmayria bengalensis n. sp. The new species is distinguished from the other valid species of the genus in the presence of 3 pairs of postanal papillae and unequal, similar spicules (42.9–49.5 μm for left and 26.4–29.7 μm for the right spicule), with a spicular ratio of 1:1.62–1.66 and a small gubernaculum (13.2–16.5 μm long), that bents towards dorsal surface.