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Category Archives: Treefrogs

Treefrogs outside of Bangkok

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

Northern Treefrog (Polypedates mutus)
Northern Treefrog Polypedates mutus

Pied Warty Frog (Theloderma asperum)
Bird Poop Treefrog Theloderma asperum

Dwarf Bush Frog (Philautus parvulus)
Dwarf Bush Frog Philautus parvulus

 
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Posted by on June 21, 2013 in Frogs, Treefrogs

 

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Four-lined Treefrog

Polypedates leucomystax

Four-lined Treefrog Polypedates leucomystax

Four-lined Treefrog calling from tree in Chatuchak

Common Treefrog Polypedates leucomystax

Four-lined Treefrog on ground in Chiang Mai Province

White-lipped Treefrog Polypedates leucomystax

Large female Four-lined Treefrog on house in Payao Province

White-lipped Treefrog Polypedates leucomystax

Underside of treefrog

Four-lined Treefrog Polypedates leucomystax

Four-lined Treefrog found calling in vegetation in Khlong Toei

Common Treefrog Polypedates leucomystax

Male Four-lined Treefrog calling in Chatuchak

Four-lined Treefrog Polypedates leucomystax

Four-lined Treefrog at pond edge in Suan Luang

Four-lined Treefrog Polypedates leucomystax

Head shot of Four-lined Treefrog in Sukothai Province

White-lipped Treefrog Polypedates leucomystax

Four-lined Treefrog in pondside vegetation in Suan Luang

Four-lined Treefrog Polypedates leucomystax metamorph

Metamorph Four-lined Treefrog in marsh in Chiang Mai Province

Four-lined Treefrog Polypedates leucomystax

Four-lined Treefrog tadpole in Rangsit

Four-lined Treefrog Polypedates leucomystax egg mass

Fresh Four-lined Treefrog egg mass in pond in Suan Luang

Four-lined Treefrog Polypedates leucomystax egg mass

Dried Four-lined Treefrog egg mass in Suan Luang

English name: Four-lined Treefrog (aka “White-lipped Treefrog”, “Common Tree Frog”)
Scientific name: Polypedates leucomystax
Thai name: Pad ban

Description: To 8cm long. Has the characteristic large head, flattish body, long legs and toes, and adhesive toepads of a treefrog. Body coloration is variable, but is usually brown or gray with a dark W-shaped mark on top of the head and a black stripe on the front of the side. Some specimens have other markings, including four indistinct lines across the back.

Tadpoles are up to 5cm long with a tall tail-fin that narrows to a point. They are grey-green to brown on the top, silver on the bottom, and have a dark stripe on the side of the tail. The eyes are far to the sides and mouth is on the bottom.

Call: The most common call is a single “QUACK” that bears a resemblance to a quacking duck. It also can make what has been described as a “throaty chuckle”.

Similar Species: The flat body and long legs distinguish the Four-lined Treefrog from most other types of frog in Bangkok.

The Inornate Froglet, which is also rather flat, is much smaller with a narrower head, patterned body, and no toepads.

Habitat: Found in wetlands, forests, city parks, and gardens. Occasionally is seen on the ground, but more often will be off the ground on bushes, trees, or the walls of buildings. At night the frogs hide inside of hollow trees or within thick vegetation. Breeds in ponds and ditches.

Contribution to the ecosystem: Helps control insect populations. Provides food for snakes, birds, and lizards.

Danger to humans: This frog poses no danger to humans.

Conservation status and threats: The Four-lined Treefrog is not considered to be at risk because of its wide distribution, ability to tolerate a wide range of habitats, and healthy population. It has been introduced to Japan, the Philippines, and New Guinea.

This species is believed to contain a number of different, cryptic species. More research will likely cause the species to be split up into several different species in the future, some of what may potentially be more threatened than others.

Interesting facts: During the breeding season mating Four-lined Treefrogs will lay over three hundred eggs in a 10cm wide foam nest that hangs in vegetation over the water. When the eggs hatch, the tadpoles drop into the water to start their life. This method of egg-laying keeps the eggs safe from aquatic predators while they develop.

References:
AmphibiaWeb: Polypedates leucomystax
Ecology Asia: Four-lined Treefrog
Frogs of Borneo: Polypedates leucomystax
IUCN Red List: Polypedates leucomystax
Online Field Guide: Polypedates leucomystax
Thailand Office of Environmental Planning and Policy: A Checklist of Amphibians and Reptiles in Thailand
Simon and Schuster’s Guide to Reptiles and Amphibians of the World

 
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Posted by on December 26, 2011 in Frogs, Treefrogs

 

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