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Pulau Tioman Dibamid Lizard

Dibamus tiomanensis


As a defensive behaviour, the Pulau Tioman dibamid lizard makes itself look wrinkled by flaring the outer dorsal scales mimicking the syntopic toxic earthworm.

The Pulau Tioman dibamid lizard belongs to the family Dibamidae (legless lizards) which diverged from all other lizards over 65 million years ago.

This species does not live in any protected areas, the main threat to this species is tourism and its island home is undergoing development for both residential and tourist areas, degrading and removing the forest required for this species.

The islands that the Pulau Tioman dibamid lizard lives on are within the boundaries of a protected marine park – however this does not provide and protection for the land. It is recommended that the islands’ forest are included in this protected area system. Further research into the trends in abundance and the impact of habitat change is required.

  • Order: Squamata
  • Family: Dibamidae
  • Population: Unknown
  • Trend: stable

EDGE Score

EDGE Score: 5.98 (?)
ED Score: 48.30 (?)
GE / IUCN Red List (?)
Not Evaluated Data Deficient Least Concern Near Threatened Vulnerable Endangered Critically Endangered Extinct in the Wild Extinct


This species is only known from the islands of Tioman (Pahang State) and Tulai (Johor State) in the Seribuat Archipelago, Malaysia, with an area estimated to be 226km².

Habitat and Ecology

The Pulau Tioman dibamid lizard is fossorial (burrowing into soft soil) living in soft soil under surface objects such as rocks or logs. It lives in a range of habitats from the edge of mangrove swamps tolowland and hill resin tree forests.

Find out more

This wordcloud illustrates the threats facing this species. The size of each word indicates the extent of a species range that is affected by that threat (larger size means a greater area is affected). The colour of the word indicates how much that threat impacts the species (darker shades of red mean the threat is more severe).


Threat wordcloud key:

Small area affected
Large area affected
Least severe
Most severe
Severity unknown
Source: The IUCN List of Threatened Species. Version 2017.1.
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