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Issue: Vol. 5361 No. 3: 2 Nov. 2023
Type: Article
Published: 2023-11-02
DOI: 10.11646/zootaxa.5361.3.1
Page range: 301-322
Abstract views: 163
PDF downloaded: 12

Three new free-living marine nematode species of Subsphaerolaimus Lorenzen, 1978, Halichoanolaimus de Man, 1886 and Belbolla Andrássy, 1973 from mangrove wetlands in Taiwan

State Key Laboratory of Mariculture Breeding; Fisheries College of Jimei University Fujian Provincial Key Laboratory of Marine Fishery Resources and Eco-environment; Fisheries College; Jimei University; Xiamen 361021; P. R. China
State Key Laboratory of Mariculture Breeding; Fisheries College of Jimei University Fujian Provincial Key Laboratory of Marine Fishery Resources and Eco-environment; Fisheries College; Jimei University; Xiamen 361021; P. R. China
Nematoda Free-living marine nematode Subsphaerolaimus danshuiensis sp. nov. Halichoanolaimus sicaoensis sp. nov. Belbolla forkyspicula sp. nov. taxonomy Taiwan Island

Abstract

Three new species of free-living marine nematodes belonging to the genera Subsphaerolaimus, Halichoanolaimus and Belbolla are described from the mangrove wetlands of western Taiwan Island. Subsphaerolaimus danshuiensis sp. nov. is characterized by a body length of 1345–1693 µm, subcephalic setae 22.5–65.0 µm long, cervical setae 16.5–33.0 µm long, an “L”-shaped spicule 66.9–76.4 μm long, and a gubernaculum with a caudally-dorsally directed apophysis 16.4–23.0 µm long. Halichoanolaimus sicaoensis sp. nov. is characterized by an amphidial fovea with 3.5–3.75 turns, a conico-cylindrical tail with the cylindrical portion approximately 3/4 of the total tail length, and 13–14 not equidistant papillose precloacal supplements. Belbolla forkyspicula sp. nov. is characterized by seven oesophageal bulbs, a short tail, a spicule with a proximal fork, and two winged supplements. Differentiating characteristics of the genera Subsphaerolaimus, Halichoanolaimus and Belbolla are provided. Types are deposited in the College of Fisheries, Jimei University.

 

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