Rev. 11/06/21
Phylum Nematoda Diesing, 1861
Class Enoplea Inglis, 1983
Subclass Enoplia Pearse, 1942
Enoplida Filipjev, 1929
Trefusiina Siddiqi, 1983
Diagnosis
Cuticle smooth or striated, except in Xennellidae De Coninck, 1965 where it is annulated.
Metanemes absent, except in Trischistomatidae.
Amphids usually non-spiral; spiral only in some Trefusiinae Gerlach, 1966 and Halanonchinae Wieser & Hopper, 1967.
Outer labial and cephalic sensilla setiform and usually positioned in two well-separated circles (except in Trefusialaimus, Lauratonematidae and Tripylina).
No cephalic capsule, except in Xennella which has a non-annulated cephalic capsule formed by thickening of body cuticle.
Buccal cavity usually without teeth (except in Trischistomatidae and Lauratonematidae).
Opening of pharyngeal glands unknown in most species, near buccal cavity in Trefusialaimus.
Male reproductive systems usually with two testes (monorchic in Trefusialaimus and Trischistomatidae).
Female reproductive system mono; ovaries reflexed except in Cytolaimium exile Cobb, 1920 and Trefusialaimus idrisi where they are outstretched.
Caudal glands (when present) lie completely within the tail or position unknown
Andrássy, I. 2007. Free-living Nematodes of Hungary, Vol. II. Hungarian Natural History Museum, Budapest.
Cid del Prado, I.,
H. Ferris and S.A. Nadler. 2010.
Soil inhabiting nematodes of the genera
Trischistoma, Tripylina
and Tripyla from México and the USA
with descriptions of new species. Journal
of Nematode Morphology and Systematics 13-28-49.
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