The Indonesian blue-tongued skink ( Tiliqua gigas) is a lizard in the family Skink. It is a close relative of the eastern blue-tongued lizard. They are endemic to the island of New Guinea and other various surrounding islands. They are found typically in the rainforest, and in captivity, require high humidity. In comparison to Tiliqua scincoides, they are fairly lean. They also have long tails (60–90% of their snout-vent length).
The subspecies T. gigas gigas is the most tropical and known for having the skinniest tail. They have solid, dark, or near solid dark limbs. Tiliqua gigas evanescens are easily recognized for having slightly more colored speckling on their limbs, a single, centered stripe on the back of their neck, and not always but most often, having very thin body banding. They also have the longest tail. Tiliqua gigas keyenesis is known for is all-over body speckling, including speckling all over the face.
The Australian northern blue-tongued skink (Tiliqua scincoides intermedia) is recognized as the largest of all the species and subspecies. Not enough studies have been conducted to give that title to any of the Tiliqua gigas subspecies. What is irrefutable is that T. gigas evanescens is the longest of all the blue tongues, often reaching lengths that exceed 30 inches from snout to tip of tail.
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