REDESCRIPTION OF TYLENCHORHYNCHUS (BITYLENCHUS) PARVUS ALLEN, 1955 WITH SEM OBSERVATIONS

Abstract

Tylenchorhynchus (Bitylenchus) parvus is redescribed and illustrated with comparative details and measurements of females and males from Gulmarg, Srinagar, India; USA; Canada and Japan. This species is characterized in having a slightly setoff lip region with 6-8 annules, lateral fields each with four incisures, outer bands areolated; stylet relatively this with rounded basal knobs sloping backwards; cylindrical tail with annulated tip; postanal intestinal sac filling most of the tail portion with intestinal granules and fasciculi. The relationship of T. parvus to closely related species is discussed.