Rev 08/23/2006
Dorylaimoidea De Man, 1876.
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.
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.