Three new species of the order Enoplida (Nematoda) from the Yellow Sea, China

Lingyun SUN; Hongxiu ZHAI; Yong HUANG

doi:10.1007/s00343-024-4068-y

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Three new species of the order Enoplida (Nematoda) from the Yellow Sea, China

Biology | Updated：2025-05-27

- Three new species of the order Enoplida (Nematoda) from the Yellow Sea, China
- Three new species of the order Enoplida (Nematoda) from the Yellow Sea, China
- 海洋湖沼学报(英文) 2025年43卷第3期页码：984-995
- Affiliations：
  
  College of Life Sciences, Liaocheng University, Liaocheng 252059, China
- Author bio：
  
  huangy@lcu.edu.cn
- Funds：
  
  the National Natural Science Foundation of China(41676146)
- DOI：10.1007/s00343-024-4068-y
  中图分类号：
- 收稿：2024-03-05，
  
  网络首发：2024-07-18，
  
  纸质出版：2025-05-01
- Accepted：
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Three new species of the order Enoplida (Nematoda) from the Yellow Sea, China[J]. 海洋湖沼学报(英文), 2025,43(3):984-995.

SUN Lingyun,ZHAI Hongxiu,HUANG Yong.Three new species of the order Enoplida (Nematoda) from the Yellow Sea, China[J].Journal of Oceanology and Limnology,2025,43(03):984-995.
Three new species of the order Enoplida (Nematoda) from the Yellow Sea, China[J]. 海洋湖沼学报(英文), 2025,43(3):984-995. DOI： 10.1007/s00343-024-4068-y.

SUN Lingyun,ZHAI Hongxiu,HUANG Yong.Three new species of the order Enoplida (Nematoda) from the Yellow Sea, China[J].Journal of Oceanology and Limnology,2025,43(03):984-995. DOI： 10.1007/s00343-024-4068-y.

摘要

Abstract

Three new free-living marine nematodes belong to the order Enoplida from the Yellow Sea

China are described. The first new species

Halanonchus gracilis

sp. nov. is characterized by inner labial sensilla papillose

outer labial setae and cephalic setae thick

with thin tips; oval amphideal fovea located posterior to buccal cavity; males possessing midventral row of 10–12 papilliform pharyngeal supplements and 13–15 unequal papilliform precloacal supplements; spicules almost straight

0.85–1.0 cloacal body diameter long; gubernaculum rod-shaped. The main difference between the described species

and other known species within the genus is that precloacal supplements are unequal

6–7 posterior supplements smaller and closer

the rest 7–8 proximal supplements larger and far

away. The genus

Halanonchus

is the first record from the Chinese sea area. The second new species

Micoletzkyia

oxycephalata

sp. nov.

is characterized by very sharp-pointed anterior part of body

paired spicules unequal and precloacal supplement situated anterior to proximal end of spicules. This new species can be easily distinguished from all other known species of

Micoletzkyia

by outstanding body shape

unequal spicules

stick shaped gubernaculum without apophysis

and the position of precloacal supplement. The third new species

Wieseria zhangi

sp. nov. is characterized by slender body with a clavate tail; large amphideal fovea oblong

double contour with a manubrium basally

situated posterior to cephalic setae; spicules short

slightly arcuated

not cephalated proximally

without internal stripe and ventral alae; gubernaculum rodlike

without apophysis; a short midventral spine positioned 11‍‍‍–‍12 µm anterior to the cloaca. Updated keys to species of three genera

Halanonchus

Micoletzkyia

and

Wieseria

are also given.

关键词

Keywords

references

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