Belongs within: Enoplia.
The Tobrilina are a clade of nematodes supported by SSU rDNA analysis, though no obvious morphological characters unite them (Ley & Blaxter 2002). The Prismatolaimidae have a wide, prismatic stoma whereas Tobriloidea usually have a funnel-shaped stoma armed with teeth at its base.
<==Tobrilina
|--TobriloideaLB02
| |--TriodontolaimidaeLB02
| |--RhabdodemaniidaeLB02
| |--PandolaimidaeLB02
| `--TobrilusFB90 [incl. TrilobusFB90; TobrilidaeLB02]
| `--‘Trilobus’ gracilisD01
`--Prismatolaimidae [Prismatolaimoidea]LB02
|--Prismatolaimus de Man 1880E86
| `--P. verrucosus Hirschmann 1952E86
|--Kinonchulus Riemann 1972E86
| `--K. sattleri Riemann 1972E86
|--Paronchulus Altherr 1972E86
| `--P. straticauda Altherr 1972E86
|--Pseudonchulus Altherr 1972E86
| `--P. inermis Altherr 1972E86
`--Stenonchulus Schneider 1940E86
`--S. troglodytes Schneider 1940E86
*Type species of generic name indicated
References
[D01] Daday, E. 1901. Édesvizi mikroszkópi állatok [Mikroskopische Süsswasserthiere]. In: Horváth, G. (ed.) Zichy Jenő Gróf Harmadik Ázsiai Utazása [Dritte Asiatische Forschungsreise des Grafen Eugen Zichy] vol. 2. Zichy Jenő Gróf Harmadik Ázsiai Utazásának Állattani Eredményei [Zoologische Ergebnisse der Dritten Asiatischen Forschungsreise des Grafen Eugen Zichy] pp. 375–470. Victor Hornyánszky: Budapest, and Karl W. Hierseman: Leipzig.
[E86] Eder, R. 1986. Nematoda from continental subterranean aquatic habitats. In: Botosaneanu, L. (ed.) Stygofauna Mundi: A Faunistic, Distributional, and Ecological Synthesis of the World Fauna inhabiting Subterranean Waters (including the Marine Interstitial) pp. 125–132. E. J. Brill/Dr W. Backhuys: Leiden.
[FB90] Freckman, D. W., & J. G. Baldwin. 1990. Nematoda. In: Dindal, D. L. (ed.) Soil Biology Guide pp. 155–200. John Wiley & Sones: New York.
[LB02] Ley, P. de, & M. Blaxter. 2002. Systematic position and phylogeny. In: Lee, D. L. (ed.) The Biology of Nematodes pp. 1–30. Taylor & Francis: Florence (Kentucky).