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GAO Qun, HUANG Yong. Oncholaimus zhangi sp. nov. (Oncholaimidae, Nematoda) from the intertidal zone of the East China Sea[J]. HaiyangYuHuZhao, 2017, 35(5): 1212-1217

Oncholaimus zhangi sp. nov. (Oncholaimidae, Nematoda) from the intertidal zone of the East China Sea

College of Life Sciences, Liaocheng University, Liaocheng 252059, China
A new species of free-living marine nematode is described from intertidal sediment of the East China Sea. The new species belongs to the Oncholaimidae family. Oncholaimus zhangi sp. nov. is characterized by males having a large ventral swelling situated just posterior to the middle of the tail, no precloacal papilla, and a row of 6-7 ventral genital setae. The tails of both males and females are similar, being conico-cylindrical in shape. The new species is distinguished from other closely related species by the presence of a prominent ventral swelling at the tail of males and a similar tail shape in both sexes. About 110 valid species in this genus have been recorded to date.
Key words:    otolith|development|otolith microstructure|growth|Schizothorax davidi   
Received: 2016-04-19   Revised: 2016-05-24
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