Tylencholaimellus magnidens
Thorne, 1957
L = 0.9 mm; a = 30; b = 5.3-6.0; c = 35; V = 33
Lip region set off by a slight depression, the lips
low and rounded. Amphids stirrupform, about half as wide as head.
Spear typical of the genus, its length, combined with that of the knobbed
extensions, equal to three times the lip width. Esophageal bulb length
averaging one and one-half times the neck width and a third as wide as
long. Intestinal cells containing scattered, dark, refractive granules.
Vulva transverse. Vagina extending three-fifths the distance across
body. Anterior female sexual branch a short pouch, posterior branch
normal, the ovary reflexed half way to the vulva. Prerectum length
two to three times the body width. Rectum frequently as long as the
tail. Tail slightly conoid to the rounded terminus. Male unknown.
Diagnosis: Tylencholaimellus with the
above measurements and general description. This species is distinctive
because of the rounded lip region and the larger spear. Probably
most closely related to T. sagittifer from which it differs principally
in the much smaller size.
Habitat: Alfalfa fields, Parma, Idaho,
and Salem, Utah, U.S.A.
DNA Sequences Obtained
