MEASUREMENTS:
4
females and 6 males.
Female: 1.4-1.6mm., a = 32, b = 6, c = 11,. V =
54%.
Male: 1.2-1.5 mm., a= 35, b = 7, c =; 11.
_
FEMALE:
Cuticle with very fine transverse striations.
Body widest in middle,
tapering to a moderately-broadly rounded head and a slender hooked tail.
Head without distinct lips, but with a circlet of 6 prominent papillae
(Fig. 1 B,C).
Stoma much deeper than wide, consisting of a well-defined
cheilostom and protostom, the cheilorhabdions forming part of the cephalic
arch; the meso, meta and telorhabdions fused to form the telostom and
extending
well back into the procorpus of the esophagus (Fig. 1 B);
Amphids opening at the anterior 1/3 of the telostom (Fig. 1, A, B).
The
esophagus with a cylinclricaJ precorpus and corpus, without a median bulb,
the isthmus swelling into a valvate terminal bulb(Fig. 1 A).
Nerve ring
at the middle of the isthmus.
Excretory pore slightly anterior to the
terminal bulb.
Amphidelphic ovaries at times with reflexed termini,
oocytes tandemly arranged in a single row.
Vulva located at midbody,
transverse and protuberant (Fig. 1E).
Anal opening very prominent,
rectaI.glands present (Fig. 1 F).
Tail terminus hooked as in Fig . 1 F
.
MALE: Testis single, reflexed.
Rectal glands present ( Fig.
1D).
Spicules paired, gubernaculum present.(Fig. 1D).
Tail terminus
hooked.
There are13 pairs of caudal papillae, 4 pair subventral and
preanal, 1 pair lateral and preanal, -1 pair postanal and lateral, 4 pair
postanal and subventral, 3 pair postanal and subdorsa (Fig. 1 D)..
Description from Massey, 1963 |