Aphelenchoides clarus
Thorne and Malek, 1968
Photo Gallery- Konza Prairie

0.3 mm; a = 21; b = 6.2; c = 19; V = 67
Cuticle marked by very fine striae which are interrupted on the lateral fields by a plain band about 1/5 body width near middle. Lip region framework lightly sclerotized with refractive cheilorhabdions about oral opening. Spear 11u long with small but distinct knobs. Esophageal gland located on left dorsal side, 3 or 4 times as long as body width. Intestine with broad lumen directed back and forth, dividing it into relatively huge cells each apparently with only a single nucleus. Vulva with slightly elevated lips; vagina extending somewhat forward. Ovaries with only 5 to 10 oocytes, arranged in single file. An immature egg was almost 3 times as long as body width. Posterior uterine branch a slender tube extending 1/2 to 2/3 back to anal region with spermatozoa sparsely arranged. Prerectal cells without granules, forming a rather clear area about as long as rectum. Terminus broadly rounded with apical mucro. Phasmids almost terminal, located sublaterally. Males not collected but sperms present in females.
Aphelenchoides clarus is distinctive because of its small size, narrow band-like lateral fields, peculiar arrangement of spear muscles, limited number of oocytes in ovary, elongate posterior uterine branch serving as a spermatheca and transparent prerectal cells.
Habitat: Soil about roots of Scotch Pine, Pinus sylvestris, near Watertown, South Dakota.

(Description- Thorne and Malek, 1968)

DNA Sequences Obtained
Specimen: Collected:
KonzaI CC-13 Konza Prairie, First survey