Pratylenchus crenatus
Loof (1960)
Photo Gallery- Quebec, Canada

Description (from Seinhorst, 1968)
 According to Loof's (1960) description, P. crenatus has a short postvulvar uterine branch and no spermatheca.  However, all specimens investigated had a long postvulvar uterine branch and a sometimes obscure spermatheca which did not contain sperms or similar bodies (the "spermagonium" of Dickerson, 1962).  Loof indicated as type specimen of P. crenatus Sher & Allen's (1953) neotype of P. pratensis.  Dr. Merlin Allen was so kind as to compare specimens of two Dutch populations with this type.  A population with a long postvulvar uterine branch, an empty spermatheca and without males appeared to be conspecific with P. crenatus.
 The descriptions of P. crenatus as given by Sher & Allen (1953) and Loof (1960) need the following emendations and additions: Spermatheca small and empty, situated anterior to vulva about 50% to 90% of distance from vulva to anus.  Postvulvar uterine branch occupying 40% to 50% of distance between vulva and anus (about two body diameters long, as stated by Sher & Allen, 1953).  The tail bears 20 to 24 annules.
 P. crenatus can be distinguished from other species with crenate tails and three annules on the lips by the absence of males and the long postvulvar uterine branch.

DNA Sequence Obtained
Specimen: Collected:
Que 3-2 Quebec, Canada