Mylonchulus laocaiensis

Contents

Rev 11/25/2024

• Moderately slender to slender, medium sized nematodes, 1.0-1.5 mm long,
• Body cylindrical, slightly tapering towards  extremities
• Cuticle smooth, two layers,
•  Lip region angular, prominent, set off from body contour by depression, 2.8-3.7 times as wide as high.
•  Lips moderately separated, distinct, with prominent labial and cephalic sensilla. Anterior sensilla in two circles: anterior with six inner labials and posterior with six outer labials and 4 cephalic papillae.
•  Amphidial fovea small, fusiform 4-5 um from anterior end of buccal cavity, at level of dorsal tooth apex.
• Vestibulum 6-7 um long. Buccal cavity goblet shaped, tapering at base, 1.7-1.9 times as long as wide, walls heavily cuticularized.
• Dorsal tooth large, 11-12 um long, claw-like, forward directed,. A small tooth  present in the subventral wall. Five transverse rows of rasp-like denticles on subventral walls.
• Two foramina at base of buccal cavity lying close to each other. Posterior fourth of buccal cavity embedded in pharyngeal tissue.
• Pharynx cylindrical, nerve ring at 30% of neck length. Secretory-excretory pore indistinct, at 33% of neck length.
• Pharyngointestinal junction non-tuberculate,
• Rectum strraight, 0.8 x abd
•  Tail short 0.9-1  x abd, ventrally bent; tail tip rounded.
• Three caudal glands well developed; opening sub-terminally at tail terminus

Female:

• Didelphic-amphidelphic,  both branches equally developed, each  occupying 11.5% of body length.

• Ovaries reflexed awith oocytes first arranged in several rows and then in single row

• Uterus simple, 1.3-1.5 x vbd;

• Pars proximalis vaginae short; pars refringens vaginae small, sclerotized in teardrop-shapes.

•  Vulva transverse, slit-like, at 64%-67% of body length.