Mabuya rugifera

Eutropis rugifera: The Rough-Scaled Sun Skink

The Eutropis rugifera, commonly referred to as the Nicobar Island skink or the rough-scaled sun skink, is a distinct species of skink found throughout southeastern Asia. Its scientific classification places it within the family Scincidae, a diverse group of lizards known for their smooth, overlapping scales.

Physical Characteristics

This skink is recognized by its unique scale structure, particularly the strongly quinquecarinate (five-keeled) dorsal, nuchal, and lateral scales, which give it a rough texture. The snout is short and obtuse, and its lower eyelid is scaly. Coloration typically consists of a dark olive-brown on its upper surfaces, contrasting with a greenish-white underside. Adults generally measure between 2 to 5 inches from snout to vent, with a tail that is approximately 1.6 times the length of the head and body.

Distribution and Habitat

Eutropis rugifera has a broad geographical distribution, being found across various islands and peninsulas in Southeast Asia. Its known range includes the Nicobar Islands in India, the Malay Peninsula (encompassing southern Thailand, Peninsular Malaysia, and Singapore), the Sunda Islands of Indonesia (including Sumatra, Nias, Mentawai Islands, Java, and Bali), Borneo, and Mindanao in the Philippines. The species is typically found inhabiting forest environments within these regions.

Taxonomy and Classification

While historically referred to under the genus Mabuya, recent systematic studies have led to its placement within the genus Eutropis. This taxonomic revision reflects a deeper understanding of its evolutionary relationships. The species name rugifera itself hints at its characteristic rough, or rugose, scale texture.