Overview
The Buleli Gecko (Lepidodactylus buleli), discovered during the landmark 2006 SANTO global biodiversity expedition and scientifically described in 2008, is an exquisite, arboreal lizard confined strictly to the high rainforest canopy of Espiritu Santo, the largest island in the nation of Vanuatu. Living dozens of meters above the jungle floor in giant emergent trees, this secretive reptile is named ‘buleli’ in tribute to the indigenous language name for canopy lizards on the Santo plateau.
Biology and Physical Characteristics
Lepidodactylus buleli is recognized by its slender, flattened body and distinctive dorsal ornamentation. Its coloration consists of a pale fawn to grayish-brown ground color overlaid with a bold, dark zigzag vertebral stripe and delicate lateral chevrons that mimic moss and tree lichen. Its digits feature well-developed, divided subdigital lamellae and specialized claw attachments that allow it to sprint effortlessly across smooth, wind-blown canopy leaves. Its large golden eyes possess vertical pupils with lobed margins for nocturnal vision.
Behavior and Ecology
An obligate canopy dweller, the Buleli gecko spends its entire lifecycle high in the forest strata, rarely if ever descending to the forest floor. By day, it shelters within the moist microclimates provided by massive bird’s-nest ferns (Asplenium) and hollow epiphytic root masses. At night, it ventures onto outer branches and foliage to forage for nocturnal flying insects, small spiders, and sweet floral nectar from blooming canopy vines. Females produce clutches of two hard-shelled eggs adhered firmly into tree trunk crevices.
Conservation and Human Impact
Evaluated as Endangered by the IUCN, Lepidodactylus buleli has an extremely restricted geographic extent of occurrence within the remaining old-growth forests of Espiritu Santo. Major conservation threats include commercial logging of emergent hardwood trees, conversion of lowland forests to cattle pasture and agriculture, and the proliferation of invasive predators like the invasive black rat and yellow crazy ant (Anoplolepis gracilipes). Protection of customary tribal conservation areas is critical to its survival.
Interesting Factoid
The Buleli gecko lives so high in the rainforest canopy of Vanuatu that scientists only discovered it by using specialized single-rope climbing techniques to ascend over 100 feet into the crowns of giant ancient trees.
Last updated: October 2026