Female: 0.8 mm; a = 36; b = 4.3; c =
15; V = 43
Tail uniformly conoid to the acute terminus. Excretory pore located
in about the same position as that of Alaimus parvus. Sensillae
about three-fifths the distance back to nerve ring. Esophagus one-fourth
as wide as neck at nerve ring, being of about this same width throughout
the anterior four-fifths of its length, the posterior fifth enlarged by
gradual expansion to an elongate-conoid bulb attaining a width equal to
two-thirds that of the neck. Intestine rather colorless except
for a few scattered, refractive, dark brown granules. Anus and rectum
obscure. Core of tail generally incomplete, not extending into terminus.
Diagnosis:Alaimus with the above measurements
and general description. The species is characteristic becauseof its small
size combined with the tail form and the relative locations of the excretory
pore and sensillae.
Habitat: A rare species from mountain soil. Horse
Creek, Summit County; summit of Mt. Timpanogos elevation 12,000 feet, and
Bells Canyon, near Draper, Utah, U.S.A.
(Description- Thorne, 1939)
