This species is known only from northern and western Borneo. It probably occurs more widely than current records suggest, especially in areas between known sites. It is present at altitudes of 100-900m asl.
Habitat and Ecology
It is known only from lowland and mid-elevation primary rainforests where it has been found in the floor litter and along stream banks. It probably breeds on land by direct development, like other members of its genus.
No subpopulation size estimates have been made. At one or two localities it seems to be relatively common.
Deforestation is the most serious threat to this species.
The species is present in at least five protected areas. More needs to be learned of breeding habits and subpopulation sizes.
Red List Status
Least Concern (LC)
Listed as Least Concern in view of its wide distribution, presumed large population, and because it is unlikely to be declining fast enough to qualify for listing in a more threatened category.
This species probably does not belong in the genus Ingerana. It should probably be assigned to a new genus in the family Ceratobatrachidae, but we retain it in the genus Ingerana in the Dicroglossidae, pending resolution of this problem. We follow Inger and Tan (1996) in considering Ingerana sariba to be a synonym of this species.
Robert Inger, Djoko Iskandar, Indraneil Das, Robert Stuebing, Maklarin Lakim, Paul Yambun, Mumpuni 2004. Alcalus baluensis. The IUCN Red List of Threatened Species 2004: e.T58318A11764761. http://dx.doi.org/10.2305/IUCN.UK.2004.RLTS.T58318A11764761.en .Downloaded on 12 December 2018