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.