Filenchus exiguus
de Man, 1876
Syn: Tylenchus exiguus
(species inquirende et incertae sedis -Siddiqi, 1986)
L = 0.7 mm; V = 66; a=34; b=5.6; c= 5.3;
L = 0.6 mm; T = 41; a = 35; b = 4.8; c = 5.2
Tails
of both sexes filiform. Lateral fields 1/4 - 1/5 as wide as body, marked
by 4 fine incisures. Lip
region slightly set off, minutely striated. Spear
about
10u long, strongly knobbed, its muscles attached to cephalic framework.
Cardia conoid.
Excretory
pore slightly anterior to basal bulb. Hemizonid adjacent to pore.
Ovary outstretched with oocytes in single file. Poterior uterine branch
half as long as body width.
Body
tapering
uniformly from vulva to terminus, the vulva-anus
distance being about equal to tail length.
Male
similar to female with typical tylenchoid
spicula
and short, slightly arcuate gubernaculum. Measurement and morphological
characters well within range of those from European specimens.
Habitat: Probably the most widespread of all Tylenchus
in the region, appearing in practically all soil samples from virgin and
cultivated fields, especially grass pastures.
