Lichtenfelder’s Gecko – Goniurosaurus lichtenfelderi – (Mocquard, 1897)

Science name: Goniurosaurus lichtenfelderi – (Mocquard, 1897)

Taxonomic:  Animalia>> Chordata>> Reptilia>> Squamata >> Eublepharidae >> lichtenfelderi

Species status: Endemic ; IUCN status: VU (Vunerable)

Description: Physical characteristics: Goniurosaurus lichtenfelderi is a medium-sized gecko. Adult males have a snout-vent length (SVL) ranging from 80.6 to 113.5 mm, while females range from 81 to 105.5 mm. The head is triangular and covered with granular scales, with distinct tubercles on the temporal and occipital regions. The dorsal side features smooth tubercles arranged in 15–22 rows, and the body has 117–130 midbody scales.

Coloration and Appearance: The gecko’s body is gray to chestnut brown, with four distinct yellow dorsal bands separated by dark brown margins. Juveniles have a lighter, spotless appearance. The tail is thick at the base, with alternating light and dark bands.

Distribution and habitat: Elevation: Found at elevations between 100 and 600 meters above sea level.
Area: Goniurosaurus lichtenfelderi is endemic to northern Vietnam, with known populations in the Bai Tu Long Archipelago, Hai Duong Province, Bac Giang Province, and Lang Son Province. The species inhabits granitic substrates, primarily in forested areas near streams.
Habitat: This species lives in mixed forests composed of broad-leaved trees, bamboo, and shrubs, including secondary forests. It is commonly found near streams and rocky areas, such as granite rock boulders.

Behaviour and ecology: Lifestyle: This species is nocturnal and primarily active at night, where it forages on the forest floor and hides in rock crevices or under decaying trees during the day. It is found near streams in forested areas, where its large eyes help it see in low light conditions.

Reproduction: Goniurosaurus lichtenfelderi is oviparous, laying clutches of eggs in rock crevices. Males possess 24–33 precloacal pores, while females lack them.

Conservation and status: IUCN Red List Category and Criteria: Listed as Vulnerable (B1ab(iii,v)) due to its restricted range and the continuing decline of its habitat and populations caused by exploitation for the pet trade.

Threats: The species faces significant threats from habitat destruction due to mining and development, as well as over-collection for the international pet trade. Populations are declining due to these pressures.

Conservation actions: Protecting its habitat, especially in areas like Bai Tu Long National Park, is critical. Enforcing regulations on the illegal pet trade and monitoring population trends are necessary to ensure its long-term survival. Further research on the species’ ecology and distribution is also recommended.