Two new species of the order Monhysterida (Nematoda) from the sea of China Author Li, Ting https://orcid.org/0009-0003-5630-314X College of Life Sciences, Liaocheng University, Liaocheng 252059, China Author Huang, Yong https://orcid.org/0000-0002-1846-8088 College of Life Sciences, Liaocheng University, Liaocheng 252059, China Author Huang, Mian https://orcid.org/0000-0003-3343-1520 College of Life Sciences, Liaocheng University, Liaocheng 252059, China huangmian@lcu.edu.cn text ZooKeys 2024 2024-02-29 1193 63 79 http://dx.doi.org/10.3897/zookeys.1193.110188 journal article http://dx.doi.org/10.3897/zookeys.1193.110188 1313-2970-1193-63 25CA8263FF244596AC1C93491C796E2A CA8BA289A7B8571EA158BB3DF43AC9C2 Genus Halomonhystera Andrassy , 2006 Diagnosis. Cuticle thin, smooth with few somatic setae; labial region not or only slightly off-set; outer labial and cephalic setae short, usually no longer than one-quarter of labial width; buccal cavity cuticularized, cup-shaped or funnel-shaped; amphidial fovea circular, located one to three head diameters from anterior end; pharynx relatively short, without basal bulb; secretory-excretory system well developed with large ventral gland and opening in anterior third of pharynx; females with single anterior ovary to the right of intestine; vulva usually close to anus; males with single outstretched testis; spicules thin, arcuate, with or without a capitulum; gubernaculum short, often with caudal apophysis; one or two ventral precloacal papillae and two or three pairs of smaller caudal papillae; rectum short and thin; tail conical, usually shorter in males than females; three or two caudal glands; spinneret surrounded by tube-like structure (modified from Leduc 2014 ).