Irregular Bow-fingered Gecko – Cyrtodactylus irregularis – (Smith, 1921)

Science name: Cyrtodactylus irregularis – (Smith, 1921)

Taxonomic:  Animalia>> Chordata>> Reptilia>> Squamata >> Gekkonidae >> irregularis

Species status: Endemic ; IUCN status: LC (Least Concern)

Description: Physical characteristics:

This species has a distinct pattern with yellow or light pink-brown reticulations separating pairs of large black or dark brown spots on the head and back.
A dark band encircles the back of the head.
The species is recognized by its enlarged subcaudal scales and 7 to 9 precloacal pores arranged in a wide angle.
The body is covered in small scales interspersed with larger tubercles along the back.
Coloration and Appearance:

The body features an intricate pattern of dark spots on a lighter background, with reticulations forming a striking contrast. The overall coloration serves as camouflage in the forested environment, helping the gecko blend into its surroundings.

Distribution and habitat: Elevation: Found at elevations between 1,067 and 1,400 meters above sea level.
Area: This species is endemic to Vietnam, primarily recorded in Ta Nung Commune (Da Lat City, Lam Dong Province) and other subpopulations in Xa Lat and Lac Xuan, also in Lam Dong Province. The type locality is the Langbian Plateau in southern Vietnam. While historical records suggest a wider range, some of these are considered uncertain due to potential misidentifications.
Habitat: Cyrtodactylus irregularis inhabits montane primary evergreen forests, specifically near streams. However, its original habitat at the type locality has been significantly degraded. The subpopulations in Xa Lat and Lac Xuan have been found in secondary evergreen forests, indicating some adaptability to modified habitats.

Behaviour and ecology: Lifestyle: Cyrtodactylus irregularis is nocturnal, inhabiting montane forests where it can be found on large trees and boulders. It is often associated with streams and damp forest areas. During the day, it likely hides under leaf litter or in crevices between rocks or trees.
Reproduction: The reproductive biology of this species is not well documented, though it is known to be oviparous.
Diet: As with many geckos, it likely feeds on a variety of small invertebrates, such as insects and spiders.

Conservation and status: IUCN Red List Category and Criteria: Listed as Data Deficient, primarily due to limited knowledge about its population size, distribution, and threats.
Threats: The degradation of its montane forest habitat, especially at the type locality, poses a significant risk to the species. Continuing deforestation and habitat alteration in the region are potential threats, though the exact impact on the population remains unclear.
Remarks:
Cyrtodactylus irregularis was first described in 1921 from the Langbian Plateau, and its distinct reticulated pattern makes it a visually striking species among the Cyrtodactylus genus. However, much of its ecology, behavior, and population dynamics remain poorly understood. Further research is needed to clarify its conservation status and to determine whether additional cryptic species exist within the Cyrtodactylus irregularis complex, as suggested by recent genetic studies.