Rev 08/03/2020






 Dorylaimoidea De Man, 1876.



Morphology and Anatomy:

Ref: Jairajpuri and Ahmad, 1992; Vinciguerra, 2006.

Families, genera and species of the Dorylaimoidea are mainly terrestiral, but many species occur in freshwater habitats.

Dorylaimid esophagi: some general chracteristics


Some dorylaimid esophago-intestinal cardia configurations


Key to Families:

Adapted from Vinciguerra (2006)

1 Cheilostom armed with four large onchia encircling odontostyle Actinolaimidae
Cheilostom without onchia 2
2 Numerous body pores with cuticularized ducts Lordellonematidae
Body pores absent or indistinct 3
3 Mouth cavity cyathiform; odontostyle guiding sheath sclerotized anteriorly Crateronematidae
Mouth cavity tubular; odontostyle guiding sheath not sclerotized 4
4 Long nematodes; odontostyle long and thin Longidoridae
Odontostyle short 5
5 Lip region low, not offset; two circles of labial papillae close together; gubernaculum present Thorniidae
Lip region prominent; two circles of labial papillae far apart; gubernaculum absent 6
6 Labial framework and mouth cavity with sclerotized pieces Thornenematidae
Lip region without sclerotized pieces 7
7 Odontostyle slender, relatively long, with narrow lumen and aperture Nordiidae
Odontostyle short, with wide lumen and aperture 8
8 Female tail elongate to filiform; male tail usually short Dorylaimidae
Tail short conoid or rounded, similar in both sexes 9
9 Aperture longer than half length of odontostyle Aporcelaimidae
Aperture shorter than half length of odontostyle Qudsianematidae



De Man, J.G. 1876. Onderzoekingen over vrij in de aarde levende Nematoden.  Tijdschrift Ned, Dierk.. Ver. 2:78-196.

Jairajpuri, M.S. and W. Ahmad. 1992. Dorylaimida: free-living, predaceous and plant-parasitic nematodes. Brill, Leiden. 458 p.

Pearse, A.S. 1942. Introduction to Parasitology.  Baltimore. 357p.

Pena-Santiago, R. 2006. Dorylaimida Part 1. Superfamilies Belondiroidea, Nygolaimoidea and Tylencholaimoidea. Pp 326-391 in  E. Abebe, István Andrássy, W. Traunspurger (eds) Freshwater Nematodes: Ecology and Taxonomy. CABI Publishing.

Vinciguerra, M.T. 2006. Dorylaimida Part II: Superfamily Dorylaimoidea.  Pp 392-467 in Eyualem-Abebe, W. Traunspurger and I Andrássy (eds) Freshwater Nematodes: Ecology and Taxonomy. CABI, Cambridge MA.

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