Uterine branch without spermatheca. Ovary outstretched, with oocytes in single file. Posterior uterine branch pouch-like. Vulva-anus distance about 3 times tail length. Tailuniformly tapering to rounded terminus .
Phasmids slightly anterior to middle of tail.
Pratylenchus agilis is most closely related to P. scribneri from which it differs in coarser striae, hemispheroid spear knobs and uniformly tapering tail. Its chief characteristic is the habit of throwing itself into a coil and moving violently when touched, entirely unlike the torpid actions of other members of the genus.