Aphelenchus assamensis sp. nov. (Nematoda: Aphelenchida: Aphelenchoidea: Aphelenchidae) from Assam, North East India.

During a survey for the aphelenchid nematodes of North Eastern States of India, a new species of Aphelenchus nematode was found from Kahilipara, Assam associating with the decaying plant materials of Areca catechu . The morphological and morphometric characteristics of the species were studied using light and Scanning Electron microscopy. Aphelenchus assamenensis sp. nov. is characterized by having 700.65-776.77 (733.30 ± 28.85) µm long body, stylet 12.11 µm long without basal swellings, two lateral lines, elongated narrow uterine sac and a cylindrical 20.76-36.33 (27.03 ± 5.03) µm long tail or about 1.36-2.37 (1.94 ± 0.43) times anal body widths long.