(Thorne & Malek,1968) Raski & Gereart, 1986
L = 0.66 mm; a = 30; b = 7.3; c = 8.2; V =
relaxed, especially in caudal portion. Cuticle with striae about
1u apart. Lateral field marked by 4 fine lines occupying
about 1/5 body width. Lip
regionsomewhat truncate, not striated. Spear8u-9u
long with small, sloping knobs, its muscles attached to arches of cephalic
framework. Intestine packed with coarse refractive granules,
obscuring details of gonads. Vulva-anus distance 2.5 times tail length.
hooked. Males not collected.
Tylenchus hamatus is distinctive because of the short spear with
sloping knobs and arcuate body ending in a bluntly rounded, hooked
Habitat: Cultivated field, Southeast South Dakota Experiment
Farm, Centerville, South Dakota.
DNA Sequences Obtained