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Text and photos by Nick Baker, unless credited to others.
Copyright ゥ Ecology Asia 2024



Dwarf Bush Frog

Fig 1

Fig 2

Fig 3











Species : Philautus parvulus
Size (snout to vent) :
Female 2.1 cm,  Male 1.8 cm

The genus Philautus comprises 84 species (Bossuyt & Dubois, 2001) of small tree frog which occur in diverse habitats within much of mainland Southeast Asia, Sumatra, Java, Borneo and the Philippines.

The Dwarf Bush Frog Philautus parvulus is one of the smaller species, measuring up to 2.1 cm from snout to vent. It thrives in lowland, hill and montane forest, freshwater swamp and agricultural areas.

Bush Frogs (also called Shrub Frogs) lack a larval stage, and develop directly from a gelatinous egg into the adult form. In the absence of a tadpole stage they are able to breed in areas where there is no free-standing water. Egg masses are generally attached to the underside of leaves, though some species may bury their eggs in the forest soil.

The Dwarf Bush Frog is known to occur in western, northern and central Thailand (being particularly abundant at Khao Yai) and neighbouring countries including Myanmar, Cambodia and Vietnam. It is also likely to occur in Laos.

Fig 1 : Pale coloured male calling from low vegetation near the swampy margin of a lake at Khao Yai National Park, Thailand.

Figs 2 and 3 : Darker, mottled specimen with vocal sac deflated and inflated.  Khao Yai National Park, Thailand.

References :

Bossuyt, F. and Dubois, A. 2001. A review of the frog genus Philautus Gistel, 1848 (Amphibia, Anura, Ranidae, Rhacophorinae). Zeylanica. Vol 6 : 1, pp 112.