Photo Gallery- Forensic Nematology
Photo Gallery- South Dakota bearberry
Description (from Thorne, 1974)
Body cylindroid, arcuate, especially posteriorly. Lip region 1/3 neck base. Lateral field 1/3 body width, granular without visible cellular structure. Lip region slightly set off with low, rounded, but distinct papillae. Spear 15 um long with aperture occupying about 2/5 its length. Guiding ring a closely fitted muscular collar. Esophagus enlarged slightly anterior to middle by very gradual expansion. Cardia discoid, then elongate conoid. Intestinal cells somewhat tesellated with fine dark brown granules. Prerectum 2-3 times as long as body width. Rectum about equal to tail length. Vulva transverse with labia forming a cephalated vagina with prominent cells. Tail dorsally convex conoid to blunt rounded terminus. One pair of caudal pores and numerous saccate glands. Males unknown and females did not contain sperms.
Thonus saccatus is distinguished by the slightly elevated labial papillae, posteriorly arcuate body, form of vulva-vagina, and dorsally convex conoid tail with numerous saccate bodies.
Habitat: Hillside thicket 6 miles west of Wilmot, South Dakota.
DNA Sequences Obtained
|SD JS3-03||South Dakota Bearberry|