Dorylaiminae. Predacious. Body rather cylindrical from anus
to middle of neck. Cuticle marked by easily visible transverse striae.
Lip region discoid, set off by deep constriction, of almost the same width
as the adjacent head which is about one-half as wide as the neck base.
An inner circlet of six rounded liplets about the vestibule. Guiding
ring of spear far forward in pharynx, like that of Discolaimus. Lateral
cords with a conspicuous series of gland-like organs. Anterior portion
of esophagus very slender, without visible radial musculature, frequently
set off by a slight constriction. Posterior portion of esophagus
cylindrical, frequently with a sheath-like membrane about its base.
Dorsal esophageal gland located about one body width behind the esophageal
constriction with its outlet distinctly farther forward than that of Discolaimus.
Vulva a small, transverse slit, the labia lacking the inner cuticularization
found in Dorylaimus. Vagina extending one-fourth to one-third across
the body, refractive, supsherical. Ovaries two in all known species.
Spicula and supplements dorylaimoid.
Type species: Discolaimoides
Diagnosis: Dorylaiminae with the above general description. The
genus differs from Discolaimus, its most closely related genus, in that
the lip region is not wider than the adjacent neck, the anterior esophagus
is more slender and without visible musculature and sometimes set off by
constriction and the pore of the dorsal esophageal gland is located somewhat