Genus Coslenchus
Siddiqi, 1978
syn.: Cosaglenchus Siddiqui & Khan, 1983
Paktylenchus Maqbool, 1983
Diagnosis
Tylenchinae. Body small (0.33 - 0.65 mm), straight
to slightly arcuate when relaxed. Body cuticle coarsely annulated
(annules 1.5 - 3.6 um wide at midbody, 117 - 228 in number between
end of body and anus) and modified into longitudinal ridges (except
on head and tail tip), 10-22 in number, excluding those of lateral fields,
at midbody. Lateral fields with two to three ridges being more elevated
tahn other body ridges. Cuticle surface outside lateral fields showing
minute squares or rectangles formed by transverse and longitudinal striae
or grooves. Cephalic region continuous or only slightly offset, usually
striated. Labial plate dumbbell-shaped, more elongate in male than
in female, bearing round, pore-like amphid apertures not extending on
lateral sides of cephalic region. Stylet under 15 um long with
conus less than half its total length. Median oesophageal bulb pyriform
or more elongate; cardia rounded to discoidal. Deirids at level of
excretory pore or just posterior to it. Phasmids dorso-sublateral,
postmedian, in females usually just behind level of vulva. Vulva
with thick lips and lateral membranes. Vagina at right angles
to body axis or slightly directed forward, with walls appearing swollen.
Ovary single, outstretched. Spermatheca usually without sperm. Postvulval
uterine sac present, rarely absent. Tail straight, elongate-conoid
to filiform. Male usually rare, with adanal bursa and cloacal
lips forming a short tube.
Type species: Coslenchus
costatus (de Man, 1921) Siddiqi, 1978
syn.: Coslenchus acceptus Andrassy, 1982
(Description- Siddiqi, 2000)
Species
List
Species found: at:
