Proleptonchus aestivus and Tyleptus projectusfrom Cuc Phuong natural forest are described and illustrated for the first time in Vietnam. Proleptonchus aestivus species is characterized by its body 1.14-1.21 mm long; lip region cap-like with lips amalgamated and papillae little protruding; odontostyle very slender and odontophore rod-like, arcuate; female genital system mono-prodelphic; tail short and rounded, hemispheroid. Tyleptus projectus species is characterized by its body 0.79-0.95 mm long; lip region set off by marked depression or weak constriction; six lips conspicuous projecting liplets around the oral opening; odontostyle small but robust, odontophore rod-like; female genital system mono-opisthodelphic, male genital system diorchic, with opposite testes. Tail short and rounded, to hemispheroid.
Anh Duong, N. T., Thanh Tam, V. T., & Peña-Santiago, R. (2012). Two new recorded species of the family Leptonchidae (Nematoda: Dorylaimida) for Vietnam’s fauna from Cuc Phuong national park. Academia Journal of Biology, 34(3), 275–282. https://doi.org/10.15625/0866-7160/v34n3.2456