Abstract
Pratylenchus sensillatus, a new monosexual species of root-lesion nematode in Canada is described and illustrated. The primary distinguishing characters are a low, rounded, offset head with three annules, a body length of 621 ± 0.39 μm, b value of 7.1–8.3 (7.8 ± 0.32), stylet length of 15–17 (15.6) μm, V value of 77–81 (79), a vulva–anus length 3.9 ± 0.5 times that of the tail length, absence of afunctional spermatotheca, and a subcylindrical tail with a broadly rounded, smooth terminus. Characteristic of the first head annule are wedge-shaped submedian sectors of the oral plate and the first finding of eight cuticular pits identifiable with cephalic and outer labial sensilla.
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