2.2 mm; a = 25; b = 4.1; c = 60; V = 53
Body practically straight. Lateral field
1/3 body width. Lips
set off by deep constriction. Amphid a prominent feature as illustrated.
almost as wide as adjacent cuticle, 33u long with aperture occupying
2/5 its length.
double. Esophagus 1/3 neck width narrowing to 1/6 as it passes through
nerve ring, then gradually expanding until half as wide as neck.
elongate conoid, half as long as body width. Intestinal cells with
scattered dark brown granules, often slightly tesellated. Prerectum
length twice body width. Vulva
longitudinal. Ovaries reflexed about half-way back to vulva.
Males not collected and females contained no sperms.
Labronema obesum is distinctive because
of its massive body, unusual amphid, monosexuality, and elongate hemispheroid
tail with distinctive central core.
Habitat: A single collection
from prairie sod west of Sidney, Montana.