This species is only known from the holotype from Weh Island, at the northern tip of Sumatra, in Indonesia and the species is mapped to the boundary of the island.
Habitat and Ecology
No information is available on its habitat and ecology, although it is likely to be a lowland forest species that presumably breeds in water by larval development, though this has not been confirmed.
Its population status is unknown as there have been no recent surveys (D. Iskandar pers. comm. May 2017). It is not certain that the species still survives as Weh Island, however there was an unconfirmed sighting of the species in 2017, suggesting that it still occurs there (Mistar Kamsi pers. comm. May 2017).
There is no direct information known regarding threats to this species, although forest destruction might be a threat.
It is not known to occur in any protected areas.
An assessment of this species is urgently needed to determine whether or not it is taxonomically valid (D. Iskandar pers. comm. May 2017), and the type specimen should be examined as part of this process. Surveys are also needed to determine whether or not this species in fact still survives on Weh Island.
Red List Status
Data Deficient (DD)
Listed as Data Deficient in view of continuing doubts as to its taxonomic validity as well as absence of recent information on its extent of occurrence, status and ecological requirements.
In 2009 Van Bocxlaer et al. suggested to transfer this species from genus Bufo to genus Duttaphrynus.
IUCN SSC Amphibian Specialist Group 2018. Duttaphrynus valhallae. The IUCN Red List of Threatened Species 2018: e.T54788A95639789. http://dx.doi.org/10.2305/IUCN.UK.2018-1.RLTS.T54788A95639789.en .Downloaded on 16 November 2018