Photo Gallery- Homestead Prairie
Body tapering uniformly both ways from near the middle. Lip region
rounded, the papillae visible only under the most favorable conditions.
From a face view the vestibule is found to be triradiate, probably allowing
for considerabe expansion while feeding. Sensillae located near the
end of the first third of neck. Amphidal aperture exceedingly minute
and obscure. Esophagus a uniform tube in the anterior two-thirds
then slowly expanding to form an elongate swelling similar to that of Alaimus
arcuatus. Vulva a transverse slit. Ovary reflexed about
half way to vulva. Eggs five to six times as long as the body width.
Body tapering uniformly to the sharply-pointed, elongate conoid, arcuate
tail. Male tail, according to de Man, shorter and less tapering than
that of female. Spicula about as long as anal body diameter witha
slight ventral angle. Supplements four, appearing as low, rounded
Females of this species are rather common in Utah fields but males have not been observed.
Habitat: The Netherlands; Sydenham, England; Erlangen, Laibach, Frankfurt and Stade, Germany. Cultivated fields near Lewiston, Ogden, Salem and Salt Lake City, Utah, U.S. A.
(Description- Thorne, 1939)
Body slender, tapering in front and behind from near middle of body.
Cuticle smooth. Head papillae very obscure, only visible under very
favourable conditions. No special stomatal structures but mouth in
the form of a minute cup leading into a narrow tube which traverses the
oesophagus. Latter a narrow tube until the terminal 1/6 or 1/7 of
its length where it becomes a clavate swelling. Tail of female long
and filiform. Male tail more or less ventrally coiled and shorter
than that of female. Spicules simple, almost straight, knobbed distally;
gubernaculums absent. 4-6 pre-anal, ventro-median supplements present
causing slight prominences on cuticle.
(Description- Goodey, 1963)