

FOLLOWUS
College of Life Sciences, Liaocheng University, Liaocheng 252059, China
huangy@lcu.edu.cn
Received:05 March 2024,
Online First:18 July 2024,
Published:01 May 2025
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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.
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.
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.
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