Diagnosis: Female: 1.0 mm; a = 28; b = 4.5; c = 60-80; V
= 36
Body rather cylindroid, tapering in the anterior third of the neck
until the lip region is two-fifths as wide as the neck base. Cuticle
without visible transverse striae but with innumerable refractive radial
elements. Lateral cords one-third as wide as body with two lines
of coarse ducts reaching to their large pores. Amphid almost as wide
as head. Lip region set off by depression. Six conspicuous
projecting liplets around the oral opening. Vestible muscular without
cuticularized elements. Guiding ring simple. Spear dorylaimoid
but somewhat angular in contour, the aperture occupying only about one-fifth
of its length. Spear extensions well cuticularized, surrounded by
a muscular bundle. Esophagus a slender tube until it expands to form
the pyriform basal bulb. This bulb is about as long as the neck width
and its lumen is divided into two sections, the shorter, posterior one
apparently forming a narrow, triquetrous, valvular chamber. Three
esophageal gland nuclei are usually visible. Cardia cylindroid, often
forming a short isthmus between the esophagus and intestine. Intestinal
cells obscure, containing fine scattered, light brown grannules.
Prerectum length about twice body width. Vulva a transverse slit half as
wide as the body. Anterior female sexual branch a short rudimentary
pouch; posterior branch normal., the ovary reflexed halfway back
to vulva. Eggs twice as long as body width. Tail hemispheroid,
the core imperfect, leaving an irregular chamber. Males unknown and
the many gravid females contained no sperms.
Habitat: Moist soil, Arlington Farm and Broad Run, Virginia,
U.S.A.
(Description- Thorne, 1939)
