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Category Archives: Agamas

Agamids outside of Bangkok

Several other Agamid species can be found in Thailand outside of Bangkok. They include:

Green Crested Lizard
P1020563

Forest Crested Lizard
Emma Gray's Forest Lizard Calotes emma

Rough-bellied Mountain Dragon
Rough-bellied Mountain Dragon Acanthosaura lepidogaster

Burmese False Bloodsucker
Burmese False Bloodsucker Pseudocalotes microlepis

Indo-Chinese Water Dragon
Indo-Chinese Water Dragon Physignathus cocincinus

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Posted by on February 4, 2013 in Agamas, Lizards

 

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Oriental Garden Lizard

Calotes versicolor

Oriental Garden Lizard Calotes versicolor

Oriental Garden Lizard found in Phra Khanong

Changeable Lizard Calotes versicolor

Oriental Garden Lizard in Suan Luang showing especially gray coloration

Oriental Garden Lizard Calotes versicolor

Oriental Garden Lizard in Chiang Rai Province showing black throat patch

Changeable Lizard Calotes versicolor

Oriental Garden Lizard in Ko Samet

Oriental Garden Lizard Calotes versicolor

Male Oriental Garden Lizard in Phra Khanong showing breeding colors

Changeable Lizard Calotes versicolor

Male Oriental Garden Lizard in Rangsit showing breeding colors

Oriental Garden Lizard Calotes versicolor

Close-up of male Oriental Garden Lizard in Ramkhamhaeng biting finger

Changeable Lizard Calotes versicolor head shot

Head shot of Oriental Garden Lizard in Rangsit

Oriental Garden Lizard Calotes versicolor head shot

Head shot of very large adult male Oriental Garden Lizard in Payao Province

Changeable Lizard Calotes versicolor

Male Oriental Garden Lizard in Prawet showing aggressive behavior in breeding season

Oriental Garden Lizard Calotes versicolor juvenile

Juvenile Oriental Garden Lizard in Phra Khanong

Changeable Lizard Calotes versicolor

Head shot of juvenile Oriental Garden Lizard in Suan Luang

Oriental Garden Lizard Calotes versicolor sleeping

Oriental Garden Lizard sleeping at night in Bangkapi

English name: Oriental Garden Lizard (aka “Changeable Lizard”)
Scientific name: Calotes versicolor
Thai name: Ging-ga Hua Daeng or Ging-ga Rua

Description: To 37 cm long. Snout to base of tail is up to 10 cm. This spiny lizard differs from most lizards in Bangkok in having a robust body that is higher than it is wide. Color is highly variable, ranging from yellow-tan to olive to brown to grey, sometimes with dark markings along the back. Occasional young individuals will also have light markings or a light line running down the back. In breeding season males can show deep red or rust coloration on the front of the body, while females may become yellow. Breeding males also develop a black blotch on the throat. Skin is rough and spiny, unlike the smooth skinks or the soft geckos. Head is large. Adults have a crest that rises up from behind the eyes to the back. Small spines can be seen just above the external ear. Dark lines radiate out from the eye. Has long legs and long toes. Tail is very slender and more than twice as long as the body. Underbelly is white.

Similar Species:
Indo-Chinese Forest Lizard is usually larger, has a distinct white lip, is almost always greyish rather than tan, and has males that turn blue during the breeding season.
Forest Crested Lizard has unique, distinct spines above the eye and eardrum and does not tend to be found in heavily populated habitats like Bangkok.
Long-tailed Grass Lizard is wider than it is high, has smooth scales, lacks the dorsal crest, and has green coloration on the sides of its body.

Habitat: Naturally found in open forest and shrubland, but has adapted tremendously well to urban environments and can be found in agricultural areas, parks, empty lots, gardens, and even decorative shrubs in front of businesses. Usually seen off the ground in low vegetation.

Contribution to the ecosystem: Helps control insect populations. Will occasionally eat small lizards, baby rodents, or seeds. Provides food for snakes and birds.

Danger to humans: Will often bite when handled but rarely is strong enough to even draw blood.

Conservation status and threats: Is a widespread and common species that has adapted well to humans and has no known conservation threats. It has been introduced to Singapore, where it is considered an invasive species that threatens local lizard populations.

Interesting facts: The general public often considers reptiles and amphibians to be more “mysterious” than other animals, and this can be reflected in their common names. The Oriental Garden Lizard is referred to as the “Bloodsucker” in many areas, a name that stirs up unnecessary fears. Obviously, the Oriental Garden Lizard is an insect-eater and does not suck blood from anything, especially not humans. It is thought that the name “Bloodsucker” may have originated from the red head and throat that male garden lizards often display during the breeding season. In talking to people about snakes, lizards, turtles, frogs, and caecilians you can come across many other inaccurate common names that have developed alongside urban legends involving the animals.

The Oriental Garden Lizard is also known as the “Changeable Lizard”, due to its wide variation in coloration and ability to change colors significantly during the breeding season.

During breeding season, the male Oriental Garden Lizard will approach the female while extending its “gular” (throat sac), raise the front of its body as high as possible while nodding its head, and open and close its mouth repeatedly. Males may also demonstrate this aggressive behavior when approached by people during the breeding season.

References:
Ecology Asia: Changeable Lizard
Wikipedia: Oriental Garden Lizard
Hong Kong University: Calotes versicolor
Thailand Office of Environmental Planning and Policy: A Checklist of Amphibians and Reptiles in Thailand
A Photographic Guide to Snakes and Other Reptiles of Peninsular Malaysia, Singapore and Thailand
A Field Guide to the Reptiles of South-East Asia
The Lizards of Thailand

 
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Posted by on September 20, 2011 in Agamas, Lizards

 

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Indo-Chinese Forest Lizard

Calotes mystaceus

Indo-Chinese Forest Lizard Calotes mystaceus

Male Indo-Chinese Forest Lizard basking in Lumpani

Male Blue Crested Lizard Calotes mystaceus in breeding coloration

Indo-Chinese Forest Lizard on fence in Chatuchak, showing breeding colors

Male IndoChinese Forest Lizard Calotes mystaceus breeding colors

Indo-Chinese Forest Lizard in breeding colors in Sathon

Blue-crested Lizard Calotes mystaceus breeding colors

Close-up of Indo-Chinese Forest Lizard

IndoChinese Forest Lizard Calotes mystaceus

Female Indo-Chinese Forest Lizard on Ko Samet

IndoChinese Tree Agama Calotes mystaceus reddish spots

Male Indo-Chinese Forest Lizard in Ratchaburi Province, showing reddish body spots

female Blue Crested Lizard Calotes mystaceus on tree

Female Indo-Chinese Forest Lizard on tree in Chatuchak

Blue Crested Lizard Calotes mystaceus on ground

Indo-Chinese Forest Lizard found on ground during driving rainstorm

Indo-Chinese Forest Lizard Calotes mystaceus head shot

Head shot of Indo-Chinese Forest Lizard

IndoChinese Forest Lizard Calotes mystaceus juvenile

Juvenile Indo-Chinese Forest Lizard on tree in Sathon

English name: Indo-Chinese Forest Lizard (aka “Blue-crested Lizard” or “IndoChinese Tree Agama”)
Scientific name: Calotes mystaceus
Thai name: Ging-ga Hua Si Fa or Ging-ga Suan

Description: To 42 cm long. Snout to base of tail is up to 14 cm. Body is robust and higher than it is wide. Has rough body scales and a back crest that runs from near the back of its head down to the middle of its back. Males have a much more prominent crest than females. Background color is grey to olive with a series of 3-5 reddish spots often running down the side. Head is large. Small spines can be seen just above the outer ear. The upper lip is white. During breeding season the forebody of both males and females will turn a light electric blue.

Similar Species: Oriental Garden Lizards are smaller, are typically (though not always) tan rather than olive or grey, and lack the white lip coloration. Their males turn red and the females turn yellow, rather than blue, during the breeding season.

Habitat: Naturally found in forest, but appears to be able to adapt to encroachment by humans and can be found in treed neighborhoods and city parks. Is almost always found on tree trunks and branches well above the ground.

Contribution to the ecosystem: Helps control insect populations. Provides a food source for diurnal snakes and birds of prey.

Danger to humans: The Indo-Chinese Forest Lizard can give a painful bite if handled, but is not dangerous.

Conservation status and threats: No known conservation issues.

Interesting facts: The blue coloration isn’t the only extravagant aspect of mating for the Indo-Chinese Forest Lizard. During breeding season the male lizard will approach a female face-to-face with its back arched and throat puffed out. It makes strong bowing motions and noddings of the head which appear almost comical. Eventually the female responds with the same posture and jerky bowings and noddings, and breeding commences.

References:
Wikipedia: Calotes mystaceus
Checklist of Amphibians and Reptiles in Thailand
A Photographic Guide to Snakes and Other Reptiles of Peninsular Malaysia, Singapore and Thailand
The Lizards of Thailand
A Field Guide to the Reptiles of South-East Asia

 
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Posted by on September 20, 2011 in Agamas, Lizards

 

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