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| Glaridoglanis verruciloba Gong, |
Abstract
Glaridoglanis verruciloba sp. nov. is described from the Zayul River in southeastern Tibet, China. It has long been misidentified as G. andersonii. This new species is diagnosed by the following combination of characters: an enlarged lower lip bearing 4–7 verruciform lobes on the central-posterior margin; an anus situated close to the origin of the anal fin; the ventral surface at the base of maxillary barbels densely covered with striae; 11 branched pectoral-fin rays; 5–6 branched anal-fin rays; and relatively short mandibular barbels. Molecular phylogenetic analyses of mitochondrial cytochrome b sequences further supported the validity of this new species, which is within a well-supported clade with substantial genetic divergence from G. andersonii.
Key words: Cytochrome b gene, Glyptosterninae, morphological comparison, phylogenetic analysis, taxonomy
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| Dorsal, lateral, and ventral views of Glaridoglanis verruciloba sp. nov., holotype, IPBX F202504001, 147.8 mm SL. |
Glaridoglanis verruciloba Gong, sp. nov.
Diagnosis. Glaridoglanis verruciloba sp. nov. can be distinguished from its two congeneric species by the following combination of characters: enlarged lower lip bearing 4–7 verruciform lobes on the central-posterior margin; anus close to the anal-fin origin; ventral surface at the base of maxillary barbels densely covered with striae; 11 branched pectoral-fin rays; 5–6 branched anal-fin rays; head relatively short (HL 19.1–21.7% of SL); and mandibular barbels relatively short (inner mandibular barbel length 13.9–17.7% and outer mandibular barbel length 29.1–36.4% of HL).
Etymology. The specific epithet is derived from the Latin verruca (= wart) and lobus (= lobe), referring to the verruciform lobes on the central-posterior margin of lower lip. As Glaridoglanis is feminine (fide Kottelat 2013), the specific epithet is treated accordingly. The Chinese common name of this species is 疣叶凿齿鮡 (Yóu yè záo chǐ zhào), which literally means “wart-lobed chiseled-tooth catfish”.
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| Type locality of Glaridoglanis verruciloba sp. nov.: a mountain stream flowing into the Sangqu River, the eastern branch of the upper Zayul River (upper left); paratype locality: a mountain stream flowing into the Gongrigabu River, the western branch of the upper Zayul River (right); the mainstem of Gongrigabu River (lower left); and a living specimen (approx. 140 mm SL) photographed in an aquarium. |
Zheng Gong, Huanshan Wang, Yanchao Liu and Jianchuan Li. 2025. Glaridoglanis verruciloba sp. nov., A New glyptosternine catfish (Siluriformes, Sisoridae) from the Zayul River in southeastern Tibet, China. ZooKeys 1262: 289-301. DOI: doi.org/10.3897/zookeys.1262.172819
