Abstract

A new nematode,Pseudocapillaria (Discocapillaria) margolisi n. subg., n. sp., from the freshwater fishesPuntius conchonius, P. sophore andAmblypharyngodon mola of West Bengal, India is described. The presence of a ventral lobe-like elevation with two papillae and the absence of a dorsal cuticular membrane on the male tail are referred to as distinguishing features of the new subgenus. The parasite is also characterised by small body size, short and non-annulated stichocytes, a distinctly expanded and folded lobular rim of the proximal end of the spicule, and eggs with protruding polar plugs, all features in which it differs distinctly from other species of the genusPseudocapillaria.

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