L = 1.2 mm; a = 18.2; b = 5.7; c = 20; V = 70.0%
The duplex lips are separated by shallow axils and bear a circlet of
minute papillae. The labial probolae appear as three low, rounded,
smooth, thin plates set close about the mouth. The three posterior
sets of pharyngeal plates apparently are undeveloped but that portion of
the pharynx is heavily cutinized. The median swelling of the esophagus
is well developed. The intestine is at once one-third the body width
but gradually expands until it is five-sixths. The posterior lip
of the vulva is huge, the anterior small. The ovary is reflexed to
within one tail-length of the anus. The posterior lip of the anus
is distinctly raised above the anterior which is continuous with the body
contour. Male unknown.
From decaying pea roots at Logan, Utah, and sugar
beet field near Salem, Utah.
(Description- Thorne, 1925)