Pratylenchus Species Key
[Click on to see Picture Comparisons of characters]
7. Males common; spermatheca filled with sperm 
....................8
7. Males are rare; spermatheca empty 
..................13
8. Tail terminus narrowly rounded to subacute 
P. loosi 
Loof, 1960
8. Tail terminus slender, broadly to conically rounded, truncate or indented
....................9
9. Stylet less than 15um; spermatheca spherical ; tail terminus usually with one or two indentations 
P. alleni 
Ferris, 1961
9. Stylet 15 um or more long; spermatheca usually oval (occasionally rounded to rectangular) 
..................10
10. Stylet 15 - 18 um long 
..................11
10. Stylet 19 - 25 um long
..................12
11. Spermatheca oval ; stylet longer than 15um; tail terminus rounded or occasionally indented; vulva at 75 - 84% 
P. coffeae
(Zimmerman, 1898)
11. Spermatheca oval to round ; stylet 15 um long; tail terminus flat, truncate; vulva at 77%
P. obtusicaudatus Romaniko, 1977
12. Lip region low, angular; stylet 19 - 22um long with rounded knobs; tail terminus rounded or broadly rounded; males rare 
P. brachyurus (Godfrey, 1929)
12. Lip region high, roundly convex; stylet 22- 25 um long with strong, flattened or slightly cupped knobs; tail terminus slender, conically rounded; males rare
P. macrostylus Wu, 1971