Celestus warreni, commonly called Warren's galliwasp or the giant Hispaniolan galliwasp, is a species of lizard in the family Anguidae. It is native to the island of Hispaniola, where it occurs in both the Dominican Republic and Haiti.
Identification
This species is among the larger members of its genus and has a robust, elongated body typical of galliwasps. Individuals are secretive and spend much of their time concealed beneath leaf litter, fallen wood, and other forest debris.
Distribution and habitat
Celestus warreni is found in lowland subtropical and tropical moist forests across parts of Hispaniola. It prefers ground-level microhabitats—loose leaf litter and piles of forest detritus—that provide cover and hunting opportunities.
Diet and behavior
Giant galliwasps are opportunistic predators. Their diet includes invertebrates such as insects and earthworms and can extend to small vertebrates, including tiny mammals and other reptiles when available. Much of their activity is crepuscular or nocturnal, and they rely on concealment to ambush prey and avoid predators.
Conservation
The species faces pressure from the reduction and fragmentation of its forest habitat. Primary causes of habitat loss on Hispaniola include agricultural expansion, logging, charcoal production and human settlement. Because populations are dependent on intact ground-layer habitat, ongoing deforestation poses a significant threat to their survival.
Research on population size, trends and life history is limited; conservation efforts would benefit from targeted surveys and habitat protection measures to clarify the species' status and needs.