All stages provided with a functional stylet
Deirids present in males and juveniles of some species.
 |
| Drawings of Sphaeronema and Tylenchulus by Charles S. Papp, CDFA |
Rev. 11/08/12
Rhabditida
Tylenchina
Criconematoidea
Tylenchulidae
Tylenchulinae (Skarbilovich, 1947)
All stages:
Labial sclerotization discrete;
stylet, when present, is short, with rounded basal knobs.
Excretory pore at highly variable distance from anterior end.
Pronounced sexual dimorphism.
Female:
Fixed into the root (totally or partially);
body obese.
Excretory gland very developed, producing a gelatinous matrix.
Vulva very posterior to terminal.
Uterine wall often thickened, transformed into a cyst in Meloidoderita.
Anus and rectum often obscure, sometines absent.
Eggs embedded in a gelatinous matrix.
Male:
Vermiform.
Stylet degenerate or absent.
Esophagus degenerate.
Penial tube, if present, is very short.
Tail elongated.
No caudal alae.
Juvenile:
All stages provided with a functional stylet
Deirids present in males and juveniles of some species.
|
|
| Drawings of Sphaeronema and Tylenchulus by Charles S. Papp, CDFA |
References:
Raski & Luc, Rev. Nematol. 10(4):409-444 (1987).