Family Neodiplogastridae

Revised 01/20/26

Classification:

Phylum Nematoda
Class Chromadorea Subclass Chromadoria Order Rhabditida Suborder Rhabditina
Superfamily Diplogastroidea
Neodiplogastridae Paramonov, 1952

Characteristics:

Lips with setose papillae
Amphid apertures large, visible
Stoma wide, well-developed, sometimes narrower posteriorly
Metastom asymmetrical with large, mobile, claw-like tooth paired with a smaller tooth.
Esophagus with anterior muscular portion and median bulb
Female diovarial, amphidelphic
Male without bursa but with nine pairs of genital papilae
Tails of both sexes elongate to filiform

Family Neodiplogastridae is distinguished from Diplogastridae in the asymmetric versus symmetric metastom and the movable teeth versus fixed teeth.

Predominantly terrestrial nematodes mainly occurring in habitats rich in bacteria.
In some species there are phorectic associations with insects.

Two subfamilies: Neodiplogastrinae Paramonov, 1952 and Mononchoidinae Andrassy, 1976.

Mononchoidinae: Stegostom always with a serrate plate in left subventral position.

Neodiplogastrinae: Stegostom with one or two denticles, or without any armament in left subventral position

In some genera the stoma has two forms, a longer, narrower form with less armamentation (stenostomous form) and a shorter, wider, more heavily armed form (eusrystomous form), eg., in Pristionchus. Prevalence of the two forms may relate to food availability and whether the species is in predatory or becterivore mode.

Go To Dictionary of Terminology

Body size range for the species of this Family in the database - Click:

References

Andrassy, I. 2005. Free-living nematodes of Hungary Vol I. Hungarian Natural History Museum.

De Ley, P. and Blaxter. M. 2004. A new system for Nematoda: combining morphological characters with molecular trees, and translating clades into ranks and taxa. Nematology Monographs and Perspectives, 2004: 633-653.

Gagarin, V.G. & Nguyen Vu Thanh. 2006. Re-classification of Neodiplogasteridae with notes on the genus Glauxinema Allgen, 1947 and description of G. aquaticum sp. n. from Vietnam (Nematoda). Zoosystematica Rossica, 15:1-6

Return to Neodiplogastridae menu

Return to Rhabditida menu

Want more information about nematodes? Go to Nemaplex Main Menu.