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 Stylotheristus Lorenzen, 1977 Diagnosis. Anterior sensilla arranged in two crowns with the number of setae in the second crown depending on the sex and life stage, 6+4 in females and juveniles and 6+10 in males, inner labial sensilla conical; buccal cavity conical; pharyngeal muscles well-developed around the buccal cavity; amphidial fovea transversely oval; spicules short; spermatheca present on the right side of intestine; three caudal glands opening at separate pores; tail conico-cylindrical with three terminal setae ( Pinto and Neres 2020 ).