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Cite this paper: |
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Yuzhen CHEN, Huilan ZHU, Yuqing GUO. A new species and a new record of free-living marine nematode of genus Diplolaimelloides (Monhysteridae) from Futian mangrove reservation in Shenzhen, China[J]. Journal of Oceanology and Limnology, 2023, 41(1): 314-326 |
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A new species and a new record of free-living marine nematode of genus Diplolaimelloides (Monhysteridae) from Futian mangrove reservation in Shenzhen, China |
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| Yuzhen CHEN, Huilan ZHU, Yuqing GUO |
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| Fisheries College, Jimei University, Xiamen 361021, China |
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| Abstract: |
| A new species and a new record of free-living marine nematode of genus Diplolaimelloides (Monhysteridae) inhabiting the sediment of mangrove reservation in Shenzhen, China are described and illustrated. Diplolaimelloides contortus sp. nov. is characterized by the combination of the following characters: ocelli present; four pairs of post-cloacal papillae arranged in (2+2) pattern, two midway on bursa and two near posterior extremities; spicules complicated in shape, twisted and curved at middle portion; gubernaculum wedge-shaped, with distal dorsal ridge well cuticularized, proximal dorsal ridge obscure sleeve-like, proximal end wrap the spicule; vulva located at 52.1%–53.6% of body length; male tail slender, 10.0–11.4 times of anal body diameter, and female tail long filiform, 13.1–13.6 times of anal body diameter. Diplolaimelloides delyi Andrássy, 1958 is first recorded from China and redescribed in detail, it differs from the original description by Andrássy in 1958 for having larger body size of male, shorter tail, and posterior situation of vulva. However, it is much conform to the redescription to specimens from East Pakistan by Timm in 1966, except for shorter tail in female and absent pre-anal seta. Specimens are deposited in the Institute of Oceanology, Chinese Academy of Sciences. |
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| Key words:
taxonomy|Diplolaimelloides contortus sp. nov.|Diplolaimelloides delyi Andrá
ssy, 1958|mangrove nematode|China
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| Received: 2021-07-01 Revised: |
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