SEAVR 
 

Home  
覧覧覧覧覧  
SE Asia fauna ...  
   
Primates
Carnivorans
Other Large Mammals
Squirrels & Small Mammals
Bats
覧覧
Birds
覧覧
Snakes
Lizards & Crocodilians
Turtles
覧覧
Amphibians
FFrogs & other calls
覧覧
Fishes
覧覧
Species Lists
 







 
覧覧覧覧覧  
New! SE Asia Vertebrate Records  (SEAVR)  
覧覧覧覧覧  
New Guinea fauna ...  
   
Snakes
Lizards
Frogs
 
覧覧覧覧覧  
Articles & Publications
News Links
Singapore sightings
Feedback
Image policy
 
覧覧覧覧覧  
 

Search this site ...

 
 


   

 
  覧覧覧覧覧  

Recently added ...
 
 
     
 
     
 
 
覧覧覧覧覧  
     
   
     
    Links :  
  HabitatID  
  Primatewatching  
  Intl. Otter Survival Fund
  Orang Utan Appeal (UK)  
  Wallace Online  
    Cicada Tree Eco-place  
  Malaysian Nature Society  
    Citizen Action for Tigers  
    Nature Society (Singapore)  
  Traffic  
    Wild Singapore  
     
  Text and photos by Nick Baker, unless otherwise credited.
Copyright ゥ Ecology Asia 2017
   

 

   
   
 
Peninsular Horned Tree Lizard
   
   

Fig 1


Fig 2
 

Fig 3
 
 

Family : AGAMIDAE
Species : Acanthosaura armata
Size (snout to vent) : males 14.4 cm, females 13.8 cm
Size (total length) : up to 22 cm

The Peninsular Horned Tree Lizard inhabits forested hills up to around 800 metres elevation, as well as lowland peatswamp forest. It is less common in disturbed habitats, but may survive in forest edge settings.

The species reportedly feeds on forest floor invertebrates, including earthworms, though sightings of these lizards on the ground are uncommon. Typically adults are encountered clinging to sturdy tree trunks.

The species exhibits the typical body form and spiny appearance which define agamid lizards. The body is thick and robust, the head short and angular, and the limbs moderately thick. There is a long curved spine behind each eye socket, and a row of spines of diminishing length along the back, starting at the neck and ending around the base of the tail. There is an expandable throat pouch which can be inflated when displaying (perhaps for courtship or territorial purposes).

Patterning typical comprises scattered oval or elongate lighter markings on a darker background. Colouration can be highly variable, ranging from reddish to brown to buff to various shades of green. Darkening of colour may occur when the lizard is stressed. The tail is banded.

According to Grismer (2011) this species occurs in southern Thailand, Peninsular Malaysia (including islands lying off the west and east coasts), Sumatra and Pulau Siantan (one of the Anambas Islands in the southern South China Sea). In Singapore, Baker & Lim (2008) categorise the species as 'doubtful', meaning that historical records of the species may be inaccurate, and there have been no recent, verifiable records.


Fig 1 : Specimen from Pulau Pinang, Penang, at the base of Penang Hill at an elevation of 50 metres. It was found resting on a tree trunk 2.5 metres from the forest floor, in a humid stream gully.

Fig 2 : The same specimen in habitat context -  an area of primary forest on a steep slope.

Fig 3 : The typical posture of this lizard is for the front legs to be raised, thus elevating the belly from the tree trunk. The head always points upwards.


References : H11