IUCN threat status:

Endangered (EN)

Comprehensive Description

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Description

Hynobius hidamontanus has a snout vent length of 44-58 mm and a total length of 76-105 mm. It has 12, or rarely 13, costal grooves. Its limbs are fairly short, such that when its limbs are adpressed to the flank, there is a space of 0.5-3 costal grooves between the toes. Its hind feet have only 4 toes. Its dorsal ground color is purplish brown, flecked with light yellow spots and its tail usually has a lichen-like pattern. H. hidamontanus is most similar to Hynobius lichenatus, but it can be distinguished from H. lichenatus by its relatively short and high tail, long trunk, and short limbs (Goris 2004).

The vernacular name comes from Mt. Hakuba of the Hida Mountains, a subdivision of the northern Japanese Alps (Goris 2004). [3684] Hynobius tenuis is now included in this taxon.

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