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Abstract
Two new species of free-living marine nematodes, Ptycholaimellus ocellatus sp. nov. and Prochromadorella gracilis sp. nov. from the Yellow Sea, China are described. Ptycholaimellus ocellatus sp. nov. is characterized by the presence of ocelli, an abruptly narrowing anterior cervical region, a cuticle with transverse rows of punctations, a lateral differentiation with two longitudinal rows of thick elongate dots, and voluminous ventral gland with a large ampulla. Prochromadorella gracila sp. nov. is characterized by the combination of lateral differentiations in the anterior pharyngeal region, a small conical stoma with outstretched teeth, slit-like amphidial fovea, and five pre-cloacal supplements.
Acknowledgements
This work was supported by National Natural Science Foundation of China (No: 30770250). The author is very grateful to Ms Guilan Qi and Xiuqin Wu for their kind help in sample collection and slide making. Two anonymous reviewers are thanked for their valuable comments and revisions on the paper.