Skip to content

56. Anodonthyla vallani

Anodonthyla vallani


Anodonthyla theoi is a frog endemic to Madagascar and is known only from a single locality within the Ambohitantely Species Reserve.

This reserve encompasses the remaining forest fragments in this area of Madagascar and it is likely that this species is confined to the protected area. The area in which this species occur is only 29km². Unfortunately, the forest is disappearing at a rapid rate, due to the impacts of fire, illegal woodcutting by local people and overgrazing by life stock and this species is likely to become extinct if this is not addressed. This species is restricted to high elevation habitats and no other suitable habitat is found near anywhere nearby. The Ambohitantely Special Reserve is poorly protected, small and isolated and so better management of the reserve and remaining habitat of this species is urgently needed. Reforestation is a possible method to combat these problems and also methods such as captive breeding should be considered. This species is part of the Microhylid frog family and molecular data has shown that the initial divergence of the Microhylidae family to have taken place about 66 millions of years ago, or immediately after the Cretaceous extinction event.

  • Order: Anura
  • Family: Microhylidae
  • Population: Common
  • Trend: decreasing

EDGE Score

EDGE Score: 6.01 (?)
ED Score: 24.45 (?)
GE / IUCN Red List (?)
Not Evaluated Data Deficient Least Concern Near Threatened Vulnerable Endangered Critically Endangered Extinct in the Wild Extinct


This species is known from a single locality within Ambohitantely Special Reserve, Madagascar, around 1,580 metres above sea level.

Habitat and Ecology

This species lives in high-altitude forest. Individuals have been found on tree trunks several metres above the ground, and they are active in drier conditions than many other frogs. It is presumed they breed in water-filled tree holes.

Find out more

This wordcloud illustrates the threats facing this species. The size of each word indicates the extent of a species range that is affected by that threat (larger size means a greater area is affected). The colour of the word indicates how much that threat impacts the species (darker shades of red mean the threat is more severe).

Livestock Logging Fire

Threat wordcloud key:

Small area affected
Large area affected
Least severe
Most severe
Severity unknown
Source: The IUCN List of Threatened Species. Version 2017.1.
Available at: