Hynobius yangi Kim, Min & Matsui, 2003

Adult Snout-Vent Length

For Hynobius yangi, adult males have a snout–vent length of 42–63 mm (1.7–2.5 in), based on 18 measured individuals; adult females have a snout–vent length of 57–61 mm (2.2–2.4 in), based on 3 measured individuals.

Tail Characteristics

Tail length ranges from approximately 70% to 90% of snout–vent length, and males have relatively longer and higher tails than females.

Dorsal Coloration

The dorsum may be olive and lack dark speckles, or it may be dark brownish and finely dotted with yellow speckles in some individuals.

Ventral Coloration

The underside of the body is a lighter shade than the dorsum.

Breeding Period and Egg Sac Shape

This species breeds from late February to late March, and its egg sacs are coil-shaped.

Clutch and Egg Size

One measured female had a clutch size of 86 eggs, each around 2.8 mm (0.11 in) in diameter.

Habitat and Breeding Habitat

Hynobius yangi lives in hilly forest areas, and breeds in still water found in ditches.

Egg Sac Attachment

Egg sacs attach to water plants or fallen branches in these breeding sites.

Conservation Status

The IUCN has assessed Hynobius yangi as Endangered, due to its small distribution area and ongoing habitat loss.