Subfamily PARATYLENCHIDAE
Classification:
Tylenchida
Tylenchina
Tyl;enchuloidea
Paratylenchidae
Thorne, 1949
Paratylenchinae Thorne, 1849
Morphology and Anatomy:
Migratory
ectoparasites.
Female:
- Slender nematodes, up to 0.85mm;
- annulation fine;
- lateral field with two to four lines;
- lip region weakly sclerotized, bluntly rounded or with various shapes from small, lip-like projections near oral aperture;
- stylet length variable (12 to 119 µm), cone longer than shaft plus knobs;
- procorpus gradually merges into
metacorpus;
-
isthmus long, slender;
- posterior bulb distinctly set off;
- Monodelphic, spermatheca well-developed, offset from anterior end of
uterus;
Male:
- Degenerate;
- stylet, if present, weakly developed;
- esophagus reduced;
- spicules slightly curved;
- no caudal alae (except in Tylenchocriconema
and weakly developed in Cacopaurus).
Juvenile:
- Similar to females, but with shorter stylet [lacking or very reduced, rudimentary in fourth-stage (dauer) juvenile].
References:
Raski, D.J. and Luc, M. 1987. A reappraisal of Tylenchina (Nematoda) 10. The
superfamily Criconematoidea Taylor, 1936. Revue de Nematologie 10:409-444.
H. Ferris
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