IUCN threat status:

Endangered (EN)

Comprehensive Description

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Description

This is a very small species of Thorius. Average length in four adult males was 17.0 mm (range 16.1-18.4mm). In seven females the mean length was 17.2 mm (range 15.2-20.0). The salamander have a very slender body and a relatively wide head with a bluntly pointed snout. The mean ratio of SL to head width is 6.7 in both males and females (range 6.1-7.3). The nostril is round or slightly oval; the mean ratio of major to minor axis is 1.3 (range 1.0-1.7). The eyes are moderately large and protrudant. There is a suborbital groove intersecting the lip on both sides. Individuals of the species have very few teeth. Some have one premaxilliary tooth. Mean number of vomerine teeth is 6 (range 5-7) in males and 4.5 (range 4-5) in females. Limbs are long; limb intervals were 4 in one male and average of 3.4 in females (range 2-4.5). Hands and feet are narrow. The tail is relatively long and tapers from midpoint to tip.

The species has a reddish dorsal stripe. Some individuals may have an ornate pattern, others a normal stripe. Legs and venter may be lighter in color. Also, there may be whitish spots on the tip of the snout and below the eye (Hanken and Wake 1994).

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