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Description
Bynoe’s Gecko
Scientific Name: Heteronotia binoei
Common Name: Bynoe’s Gecko
Species Overview
Size: Adult Bynoe’s Geckos typically reach 3.5–5 inches (9–13 cm) in total length, including the tail. They are small, slender-bodied geckos with fine granular scales, short limbs, and a relatively broad head.
Appearance: Bynoe’s Geckos display an incredible range of colours and patterns depending on their locality. Most individuals show a mottled or marbled pattern of grey, tan, and brown with lighter blotches or banding, which provides excellent camouflage against desert sands or rocky outcrops. Their eyes are large with vertical pupils, and their skin has a dry, pebbled texture. The tail is thick at the base and often tapers to a narrow point, serving as a fat reserve.
Distribution: Endemic to Australia, Bynoe’s Gecko is one of the country’s most widespread reptiles, found across arid deserts, grasslands, woodlands, and coastal regions. Its adaptability allows it to thrive in nearly every habitat type across the continent.
Habitat: In the wild, this species inhabits dry, open areas with abundant ground cover such as leaf litter, rocks, or fallen logs. They are often found sheltering in cracks or burrows during the day. In captivity, they thrive in terrestrial enclosures with secure hides and a dry, warm environment that reflects their natural habitat.
Behaviour: Bynoe’s Geckos are nocturnal and terrestrial, spending their nights actively hunting small insects. They are curious and alert but can be skittish when startled. Despite their small size, they are hardy, adaptable, and thrive in stable conditions.
Captive Care
Enclosure: Provide a terrestrial enclosure of at least 18 inches × 12 inches × 12 inches (45 × 30 × 30 cm) for a single adult. Use a compacted sand-soil mix or clay-based substrate to mimic arid ground. Include rocks, bark, and low décor for hiding and climbing. A naturalistic or semi-arid setup with multiple hides is ideal.
Temperature & Humidity: Maintain a warm side temperature of 90–94°F (32–34°C) with a cooler end around 75–80°F (24–27°C). Nighttime temperatures can drop to 68–72°F (20–22°C). Keep humidity low, between 30–40%, though a slightly damp hide can assist with shedding.
Lighting: Provide low-level UVB lighting (2–5%) on a 12-hour day/night cycle. While nocturnal, they benefit from a natural light rhythm and mild UVB exposure for overall health and calcium processing.
Diet: Offer a variety of gut-loaded insects such as crickets, small roaches, and mealworms. Supplement occasionally with silkworms or black soldier fly larvae. Dust all feeders regularly with calcium and multivitamin supplements. Juveniles should be fed daily; adults every 2–3 days.
Behaviour in Captivity: Bynoe’s Geckos are active and inquisitive once settled. They are best suited as display animals but may tolerate minimal handling if done gently. Their small size and quick movements make them better for experienced keepers.
Special Considerations: Always regulate heating with a thermostat. Avoid overly humid environments, as prolonged moisture can lead to skin issues. Ensure tight-fitting lids—this species can climb textured surfaces and escape through small gaps.
Taxonomy Note
The Bynoe’s Gecko (Heteronotia binoei) belongs to the family Gekkonidae and is one of the most diverse gecko species in Australia, with numerous regional forms and parthenogenetic (self-reproducing) populations. This adaptability has contributed to its wide range and success across the continent. H. binoei differs from species like Diplodactylus and Lucasium by its granular scales and smooth, dry texture.
Genetics Note
There are currently no established morphs or colour lines of Heteronotia binoei in captivity. However, wild populations display significant natural variation, with some localities showing more orange, reddish, or pale sand tones. Certain inland populations are known to reproduce parthenogenetically (females producing viable offspring without males), a rare trait among reptiles.