Leptonchus granulosus
Cobb, 1920
Photo Gallery- Konza Prairie
Photo Gallery- Nine-mile Prairie
Photo Gallery- Forensic Nematology

1.2 mm; a = 26; b = 4.6; c = 79; V = 60
Body slightly arcuate when relaxed.  Subcuticle coarsely striated, frequently separated from outer layer.  Lateral cords 1/3 body width with 2 rows of coarse pores.  Lip region cap-like, set off by constriction.  Amphids beaker shaped, almost as wide as head.  Spear very slender, often slightly curved with indistinct aperture.  Spear extensions well developed.  Esophagus a slender tube with fusiform to pyriform basal bulb.  Intestine a conspicuous feature because it is only 2 to 5 times longer than body width.  Prerectum extending forward past reproductive system, a most unusual feature of this species.  Vulva transverse with muscular labia.  Ovaries reflexed half way to vulva.  Eggs about 3 times body width, forcing ovaries out of position when present.  Males not found in this area, and very infrequently in other regions where associated females do not contain sperms.

Leptonchus granulosus is immediately recognized by the elongated prerectum and very short, hemispheroid tail.

Habitat: A common inhabitant of virgin and cultivated soil from Nebraska to  eastern Montana, Minnesota, Iowa and the Dakotas.

DNA Sequences Obtained
Specimen: Collected:
9 Mile 4 Cone 2-15a 9 Mile Prairie, Preliminary Survey
9 Mile 4 Cone 2-15b 9 Mile Prairie, Preliminary Survey
9 Mile 4-30 SW2-24 9 Mile Prairie, Preliminary Survey