Photo Gallery- Nine-mile Prairie
fusiform, tapering uniformly towards the extremities. Annules about
3u wide at midbody, gradually diminishing until they are almost
invisible on the head and completely lacking on the spicate terminus. Lateral
field a bright band with unstriated refractive borders, about 1/4 body
width at midbody. Rarely an obscure median incisure is present.
Head without sclerotized framework.
Spear 10u long with rounded knobs, the muscles attached to the
sclerotized inner walls of the lip region. Only dorsal esophageal
gland nucleus observed. Cardia discoid. Hemizonid not seen.
with obscure lateral membranes. Ovary outstretched, its details obscured
by massive intestinal granules. An egg was 12u x 46u. Posterior
uterine branch about 1/3 as long as body width. Vulva-anus
distance about 3/4 tail length. Anus and rectum obscure. Intestinal
cells adjacent to rectum hyaline, not granular. Neither phasmids
nor deirids seen.
Tylenchus fusiformis is immediately distinguished by the fusiform body, strong annulation, and non-crenate lateral fields.
Habitat: Prairie sod near grave of Indian Chief Sitting Bull, west side of Missouri River opposite Mobridge, S. Dakota.
(Description- Thorne and Malek, 1968)