AMPHIBIAWEB
Pseudohynobius kuankuoshuiensis

Subgenus: Pseudohynobius
family: Hynobiidae
subfamily: Hynobiinae
 
Species Description: Xu, Zeng & Fu. 2007 A New Species of the Genus Pseudohynobius (Caudata: Hynobiidae) from China. Acta Zootaxonomica Sinica 2007 32 (1):230-233

AmphibiaChina 中国两栖类.

Conservation Status (definitions)
IUCN (Red List) Status Data Deficient (DD)
CITES
Other International Status None
National Status None
Regional Status None

Country distribution from AmphibiaWeb's database: China

 

View distribution map using BerkeleyMapper.

   

From the Encyclopedia of Life account:

Distribution

This species is so far only known from its type locality, Shuiyang, in Guizhou Province, China. The limits of its range are unknown (IUCN, 2010).


Authors: Wu, Yunke; Sparreboom, Max
License: http://creativecommons.org/licenses/by-nc/3.0/

Morphology

Head oval, slightly flattened. Snout rounded. Distance between nostrils larger than that between eyes. Labial fold absent. Vomerine teeth series have 12–17 teeth on each side. Trunk cylindrical, slightly flattened. Vertebral groove conspicuous. 11 costal grooves. When limbs are adpressed, digits only meet. Dorsal caudal fin starts from tail base; ventral caudal fin present at the posterior 2/3 of the tail. Skin smooth. Small white spots present on head, dorsum and the upper side of limbs. In life, dorsal coloration purplish brown with scattered oval yellow spots, which are largest on dorsum.


Authors: Wu, Yunke; Sparreboom, Max
License: http://creativecommons.org/licenses/by-nc/3.0/

Size

All measurements are from Xu et al. (2007). Tail is broken in all specimens.

Male (holotype). Snout-vent length: 89 mm; Head length: 23.3 mm; Head width: 15 mm; forelimb length: 22.7 mm; hind-limb length: 27 mm.

Female (2 paratypes). Snout-vent length: 87.5–93.5 mm; Head length: 24–25 mm; Head width: 15.8–15.9 mm; forelimb length: 24.1–26 mm; hind-limb length: 26–29.4 mm.


Authors: Wu, Yunke; Sparreboom, Max
License: http://creativecommons.org/licenses/by-nc/3.0/

Diagnostic Description

Dorsal color is purplish brown, with oval bright spots. Tail length is shorter than snout-vent length. When limbs are adpressed, digits only meet. 11 costal grooves.


Authors: Wu, Yunke; Sparreboom, Max
License: http://creativecommons.org/licenses/by-nc/3.0/

Look Alikes

Xu et al. (2007) state that Pseudohynobius kuankuoshuiensis resembles P. flavomaculatus. The former species differs from the latter by the shape of dorsal spots: oval or near rounded in P. kuankuoshuiensis but irregularly cloud-like in P. flavomaculatus. Xu et al. (2007) further claim that P. kuankuoshuiensis has a relatively longer head (head length/head width > 1.55) than P. flavomaculatus. But since only three adults of P. kuankuoshuiensis were measured, this difference needs verification.


Authors: Wu, Yunke; Sparreboom, Max
License: http://creativecommons.org/licenses/by-nc/3.0/

Habitat

This salamander lives in montane areas with dense vegetation (elevation 1,350–1,500 m). Thick layers of fallen leaves provide cool and moist shelter for this species, which has been dug out by locals. Larvae are found in nearby shallow streams, where water is clear and the current weak. Streams are covered by the canopy. Larvae are also found in small pools fed by springs (Xu et al., 2007).


Authors: Wu, Yunke; Sparreboom, Max
License: http://creativecommons.org/licenses/by-nc/3.0/

Reproduction

Breeding season is unknown. Larvae collected in September are 51.5–55.6 mm in total length (Xu et al., 2007).


Authors: Wu, Yunke; Sparreboom, Max
License: http://creativecommons.org/licenses/by-nc/3.0/

Evolution

Pseudohynobius kuankuoshuiensis was long considered a population of P. flavomaculatus (Fei & Ye, 1983; Fei et al., 2006). However, Zeng et al. (2006) found a fixed allozyme difference between the two species. Mitochondrial sequence data further revealed 14.2% divergence between P. kuankuoshuiensis and P. flavomaculatus. Pseudohynobius kuankuoshuiensis is not closely related to P. flavomaculatus, despite that they are morphologically similar. Pseudohynobius kuankuoshuiensis is the sister species to P. shuichengensis.


Authors: Wu, Yunke; Sparreboom, Max
License: http://creativecommons.org/licenses/by-nc/3.0/

Genetics

Mitochondrial DNA sequence data and allozyme data are available in Zeng et al. (2006).


Authors: Wu, Yunke; Sparreboom, Max
License: http://creativecommons.org/licenses/by-nc/3.0/

Conservation

The animal is rare. The species is threatened by habitat degradation due to human activities. Data are insufficient to make a statement about its status (IUCN, 2010).


Authors: Wu, Yunke; Sparreboom, Max
License: http://creativecommons.org/licenses/by-nc/3.0/