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- Stout to moderately slender nematodes, body length 565-727 um.
- Cuticle 2 um thick, deeply annulated; annuli 2-3
um wide.
- Lateral field with two wings (three longitudinal incisures), occupying 15-19% of midbody diam., extending to tail tip.
- Lip
region continuous with body contour, with three pairs of asymmetrical
lips, one dorsal and two ventrolateral.
- Six labial and four
cephalic sensilla, primary axils forming a deep U-shape,
- Oral opening surrounded by three labial probolae, connected at
bases by tangential ridges, each labial probola with a short basal
part (stipe) and a longer and bifurcated distal part (furca) with
basal ridge and prongs very long and divergent, more or less
straight, lacking lateral tines (pinnae).
- Amphidial apertures clearly visible, large, rounded.
- Stoma cephaloboid, cheilostom with well-developed and rounded rhabdia,
gymnostom very short, stegostom with minute discernible rhabdia.
- Esophagus
cephaloboid,corpus subcylindrical, 2.4-3.0 times isthmus
length; swollen elongated metacorpus with a wide lumen, isthmus
slightly anteriorly wider, basal bulb ovoid, with well-developed valve
apparatus.
- Cardia conoid, surrounded by intestinal tissue.
- Excretory pore at 65-75% of neck length, situated at isthmus level,
30-35 annuli from anterior end.
- Deirids at 80-88% of neck length, situated at isthmus level,
35-42 annuli from anterior end.
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Female:
- Monodelphic-prodelphic, ovary short, lacking flexures, with
oocytes in one row, oviduct short, alveolated, spermatheca well
developed, 0.6-0.7 corresponding body diam. long, distally very
swollen and proximally tubular.
- Uterus 1.6-2.0 times as long as corresponding body diam., tubular,
proximally thinner,
- Post-vulval uterine sac long, 1.1-1.4 times body diam. with thin
walls.
- Vagina sigmoid, extending inward for 28-31% of body diam., vulva
ventral, not protruding.
- Rectum 0.7-1.0 anal body diam. long, three small gland-like cells
distinguishable around intestinerectum junction.
- Tail conoid, with finely rounded terminus, rarely mucronate.
Phasmids located at 35-42% of tail length.
Male:
- Monorchic, dextral in position, testis variable in development
and reflexed to left side anteriorly.
- Spicules
paired and symmetrical, rounded and ventrally curved manubrium,
conoid-elongate calamus and almost straight lamina with a ventrad
curved acute tip.
- Gubernaculumwell
developed, curved, about half of spicule length long, crura well
developed.
- Three gland-like cells around beginning of cloaca.
- Genital papillae in seven pairs: two precloacal pairs and five
caudal pairs (one subventral in middle part, one subventral and
one subdorsal in posterior part, and two pairs near tail terminus,
one ventral and one lateral at lateral field terminus).
- Tail conical and curved ventrad ending in a finely rounded or
almost acute tip.
- Phasmids located at 41-49% of tail length, slightly posterior
to anteriormost subventral postcloacal genital papillae.
Ref: Abolafia et al., 2020.
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