Genus Rhabditis
Dujardin, 1845
Photo Gallery- Forensic Nematology

GEN.CHAR. Body tapering at extremities.   Caudal sucker none.  Integument having longitudinal as well as transverse striae;  setae none;  papillae none.  Pharyngeal cavity long cylindrical.  Esophagus distinctly muscular, having two swellings, one elongated near its middle, and the other terminal, rounded, and containing a simple valvular apparatus. Intestine rather sparsely covered with fat-particles, the large containing cells of which can sometimes be recognized.  Vulva near the middle of body.  Uterus bifid, segments symmetrical.  Oviparous or vivparous. Spicules of moderate size, slightly curved.  Accessory piece single, posterior, median, about half as long. Caudal alae lateral, membranous, supported by sets of rays. Ventral gland wanting. Lateral vessels or cellular canals not seen.  Movements active.
Although I have looked very carefully for them, I have been unable to distinguish either lateral vessels or the ventral excretory gland in any of the representatives of this genus.
The typical Rhabditis terricola of Dujardin seems undoubtedly to correspond as regards structural details wth the other species that I have placed in this genus; and, since it is now evident that Dujardin associated with this animal others of such diverse types as Anguillula aceti and Tylelenchus tritici, we shall have the less difficulty in imagining that he may have confounded with them also members of the genus Plectus, not only because they seem to be much more abundant than are the proper representatives of the genus Rhabditis, but also because he speaks of the latter as possessing that remarkable tenacity of life which belongs to species of the two former genera, when , as far as my exp[erience goes, it is not possessed by th real allies of the typical Rhabditis terricola.
(Description- Bastian, 1865)

Definition:  Rhabditinae.  Lips closed, not forming an open cup.  Oesophageal collar always present.  Metarhabdions with 5 or 3 tubercules in place of teeth, often anisoglottid, sometimes anisomorphic.  Vulva median, ovaries paired, oppposed reflexed.  Female tail of various shapes.  Male tail usually leptoderan, peloderan in one subgenus.  Spicules separate.
Bionomics.  All species occur where bacteria are plentiful, on which they feed.  Hirschmann (1952) showed that breeding of Rhabditids depends on ingestion of living bacteria.
(Description- Goodey, 1963)

Species found:      at:
R. terricola Konza Prairie
R. longicaudata Konza Prairie