Sri Lanka golden gecko

The Sri Lanka golden gecko, scientifically identified as Calodactylodes illingworthorum, is a striking species of gecko native to the island of Sri Lanka. It is distinguished by its vibrant coloration, featuring a yellow-ochre dorsum adorned with dark brown spots and a conspicuously bright yellow or orange throat. This species is adapted to a rock-dwelling lifestyle, primarily found in the dry zone and monsoon forests of eastern Sri Lanka, often inhabiting granitic caves where significant aggregations, sometimes numbering up to fifty individuals, have been observed.

Habitat and Distribution

Calodactylodes illingworthorum is specifically distributed within the monsoon forests of Sri Lanka's eastern regions, including notable areas like Namadagala, Monaragala, Nilgala, Gal Oya National Park, Buttala, and Ampara. Its preferred habitat consists of rocky biotopes, such as savannahs and monsoon forests featuring granitic caves.

Physical Characteristics

This large gecko possesses a head that is noticeably wider than its body, and its eyes feature a vertical pupil. Anatomical details include two pairs of enlarged, nearly rectangular lamellae under each finger and toe, aiding in its climbing ability. The tail is segmented into 27 distinct parts. Beyond the dorsal coloration and throat hue, its chest and venter are typically pale gray or yellow. The species also has 4 pre-anal pores and between 4 to 10 femoral pores.

Ecology and Diet

The Sri Lanka golden gecko is an active forager, departing its rock shelters by dusk to seek food in the adjoining vegetation, returning by morning. Its diet is carnivorous, comprising a variety of large insects such as dipterans and coleopterans, along with their larvae, glow-worms, and other arthropods. The species is also known for its vocalizations; it emits a harsh, chuckling call heard throughout the day, with increased frequency at dusk.

Reproduction

Calodactylodes illingworthorum reproduces oviparously, laying eggs that measure approximately 14.9 by 8.2 millimeters. These eggs are deposited at communal nesting sites, where they are glued to rock surfaces. A remarkable aspect of their reproduction is the potential for over 100 eggs to be laid at a single time. Hatchlings emerge with a total length of around 27 millimeters, including their tail.