All stages provided with a functional stylet
Deirids present in males and juveniles of some species.
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| Drawings of Sphaeronema and Tylenchulus by Charles S. Papp, CDFA |
Rev. 02/13/23
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.
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.
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| Drawings of Sphaeronema and Tylenchulus by Charles S. Papp, CDFA |
References:
Ghaderi, R., Geraert, E., Karegar, A. 2016. TheTylenchulidae of the World. Academia Press, Ghent, Belgium
Raski, D.J. and Luc, M. 1987. A reapraisal of Tylenchina (Nemata) 10. The superfamily Criconematidea Taylor, 1936., Rev. Nematol. 10: 409-444..