Description (from Thorne, 1974)
Body slightly arcuate, usually somewhat twisted. Lip region angular, set off by narrowing and depression. Spear 35 um long with broad flanged knobs, the duplex portion occupying 3/5 its length. Esophagus as slender tube until suddenly expanded into the basal bulb which is about half the neck width and twice as long as wide. Cardia simple, conoid. Anterior uterine branch a rudimentary pouch 2-3 times as long as body width, forming a large spermetheca which often is filled with sperms. Posterior ovary slender and elongated, often reflexed almost to vulva and composed of 25-30 oocytes in single file. Female prerectum length 4-5 times body width.
Male tail more arcuate, with or without a single ventromedian supplement. Spicula with a slight ventral angle.
Habitat: Native prairie sod in numerous locations from Trinidad, Colorado north through Nebraska and South Dakota. Sometimes also collected from windbreaks.