Two new species of Xyalidae (Nematoda: Monhysterida) from intertidal zone of the Bohai Sea, China
In: Zootaxa. Magnolia Press: Auckland. ISSN 1175-5326; e-ISSN 1175-5334, more
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| Keywords |
Taxa > Species > New taxa > New species
Amphimonhystrella boucheri Zhai, Geng & Sun, 2022 [WoRMS]; Paramonohystera gracilis Zhai, Geng & Sun, 2022 [WoRMS]; Xyalidae Chitwood, 1951 [WoRMS]
Marine/Coastal |
| Author keywords |
Nematoda; free-living marine nematodes; taxonomy; Paramonohystera gracilis sp. nov.; Amphimonhystrella boucheri sp. nov. |
| Authors | | Top |
- Zhai, H.
- Geng, C.
- Sun, J.
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| Abstract |
Two new nematode species are described from the intertidal zone of the Bohai Sea, China. Paramonohystera gracilis sp. nov. is characterized by slender body with a long filiform tail; oval amphidial fovea 6 µm in diameter; spicules slender, 3.4 a.b.d. long; gubernaculum small, plate shaped without apophysis. It differs from the most similar species P. riemanni (Platt, 1973) Lorenzen, 1977 by much slender body and longer filiform tail. Amphimonhystrella boucheri sp. nov. is characterized by short body, deep buccal cavity with funnel shaped anterior portion, circular amphids, conico-cylindrical tail with two thirds conical anterior portion and a third cylindrical posterior portion, small spicules L-shaped and gubernaculum with short apophysis. It is distinguished from the most similar species A. unita Lorenzen, 1977 in buccal cavity funnel shaped, small amphidial fovea circular, spicules short with tapered distal end. Updated keys for valid species of Paramonohystera and Amphimonhystrella are provided. |
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