Litinium Cobb, 1920

Wen, Guo, Huixin, Liang, Mengna, Wang & Chunming, Wang, 2023, Description of two new species of Nematoda: Litinium macramphida sp. nov. (Oxystominidae) and Cyartonema breviseta sp. nov. (Cyartonematidae) from the Yellow Sea, China, Zootaxa 5339 (6), pp. 577-586 : 578

Genus Litinium Cobb, 1920

Diagnosis (based on Leduc & Zhao 2021): Circles of six inner and six outer labial papillae (<2 μm) or setae (≥ 2 μm) situated close together on anterior end, subapically, with circle of four cephalic papillae or setae posterior to circles of inner and outer labial sensilla. Amphideal fovea situated between circles of outer labial and cephalic sensilla.Amphideal fovea varies in shape between species and may differ in males and females of same species: may be ovoid with anterior round aperture, horseshoe-like or crescent contoured or more complex. Only one posterior antidromously reflexed ovary present; vulva shifted anteriorly. Tail never clavate, more or less short, cylindrical with rounded tip, occasionally conical or conico-cylindrical with pointed tip; terminal caudal capsule (thick cuticular lining at tip of tail) absent or weakly developed.