Parahystrignathus, Zhang & Yin & Carreno & Zhang, 2021

Zhang, Ningning, Yin, Shi, Carreno, Ramon A. & Zhang, Luping, 2021, Three new genera and new species of hystrignathid nematodes (Nematoda: Thelastomatoidea) from passalid beetles (Insecta: Passalidae) from Yunnan Province, China with phylogenetic analysis of Hystrignathidae, Zootaxa 5071 (2), pp. 206-222 : 218

Parahystrignathus gen. n.

Diagnosis. Female: Body relatively stout. Cuticle strongly annulated in spiny area; annulations less pronounced in other parts of body. Female reaching its maximum width in middle of body. Cervical cuticle bearing alternating rows of spines. First row with 16 spines. Spines originating a short distance from head and extending to level of vulva. Lateral alae absent. Head well-developed, set off from body by a deep groove and bearing 8 papillae arranged in 4 pairs. Procorpus clavate, bulb spherical, valve-plate well-developed. Reproductive system didelphic-amphidelphic. Vulva located posterior to mid-body. Tail short, conical. Male unknown.

Type species: Parahystrignathus tongbiguanensis gen. n. et sp. n.

Distribution: China.

Etymology: The genus name refers to the close resemblance between this genus and Hystrignathus Leidy, 1850 .