Pratylenchus Species Key

Click on to see Picture Comparisons of characters

31. Stylet 15 - 17um long; lip region low, rounded; tail elongate conoid with coarsely annulated terminus or with a large terminal annule; spermatheca square to oval elongate 
P. pratensisobrinus Bernard,1984
31. Stylet 14 - 16 um long; lip region low flat; tail broadly conoid; tail terminus truncate with a distal subventral projection one or two annules long; spermatheca oval to rectangular
P. ventroprojectus Bernard, 1984
32. Males common; spermatheca filled with sperm 
.................33
32. Males rare; spermatheca empty 
.................41
33. Spermatheca oval 
................34 
33. Spermatheca round , sometimes more square and subspherical
................38
34. Body slender; average a = 29 or more 
................35
34. Body stout; average a = less than 29 ................36
35. Stylet 14 - 18 um long; lip annules usually three or four on one side and four on the other; median bulb oblong; central zone of lateral field narrower than lateral zones; a = 26.6 - 39.5 
 P. vulnusAllen & Jensen, 1951
35. Stylet 11 - 13 um long; lip annules three on both sides; median bulb oval; central zone of lateral field not narrower than lateral zone; a = 20 - 39 (29)
 P. ekrami Bajaj & Bhatti, 1984
36. Vulva at 68 - 76% 
...........................37
36. Vulva at 76 - 80% (with a = 21 - 25)
P. pseudopratensis Seinhorst, 1968