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

 
     
 

 

 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 

   
   
 
Balloon Frog
   
   

Family : MICROHYLIDAE
Species : Glyphoglossus molossus
Size (snout to vent) :  5 cm

The genus Glyphoglossus comprises a group of 10 species (as of 2024) of mainly medium-sized microhylids. These frogs have broad, flattened bodies and heads, small eyes and a blunt snout. They occur in southern China and mainland and insular Southeast Asia, particularly Borneo.

Glyphoglossus molossus
(Balloon Frog, Blunt-headed Burrowing Frog) is widespread in central and southern Indochina, occurring in many lowland locales below 600 metres elevation in Myanmar, Thailand, Laos, Cambodia and Vietnam.

It naturally occurs in dry dipterocarp forest and deciduous forest. It typically lies hidden beneath loose sandy soil,  amongst leaf litter or beneath rotting logs, but it will emerge during rainstorms to congregate at seasonal pools to breed, sometimes in large numbers. The fertilised eggs float on the surface of such pools, and the tadpoles are bottom dwelling.

In some parts of its native range it is sold in wet markets for human consumption, particularly in Thailand, Laos and Cambodia. There have been attempts to farm the species, and thus localised feral populations may occur.


Figs 1 to 3: Example from Siem Reap, Cambodia, found beneath a log in secondary forest. Its body is inflated, particularly in figures 2 and 3. All photos thanks to Derek Clark.


References : 

IUCN SSC Amphibian Specialist Group. 2021. Glyphoglossus molossus. The IUCN Red List of Threatened Species 2021: e.T57820A117297620.


 
 
Fig 1
 
©  Derek Clark
Fig 2
 

©  Derek Clark

Fig 3 
 

©  Derek Clark