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Raorchestes signatus

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Taxonomy [top]

Kingdom Phylum Class Order Family
ANIMALIA CHORDATA AMPHIBIA ANURA RHACOPHORIDAE

Scientific Name: Raorchestes signatus
Species Authority: (Boulenger, 1882)
Synonym/s:
Ixalus signatus Boulenger, 1882
Philautus signatus (Boulenger, 1882)
Pseudophilautus signatus (Boulenger, 1882)
Taxonomic Notes: Specimens recorded from Ponmudi Hills (and possibly Wayanad) as Philautus signatus are in the process of being described as the new species Philautus sp. nov. 'Ponmudi_3' (S.D. Biju pers. comm.).

Assessment Information [top]

Red List Category & Criteria: Endangered B1ab(iii) ver 3.1
Year Published: 2004
Date Assessed: 2004-04-30
Assessor/s: S.D. Biju, Gajanan Dasaramji Bhuddhe, Bexel Ayyasamy Daniel, Sushil Dutta, Karthikeyan Vasudevan
Reviewer/s: Global Amphibian Assessment Coordinating Team (Simon Stuart, Janice Chanson and Neil Cox)
Justification:
Listed as Endangered because its Extent of Occurrence is less than 5,000 km2, its distribution is severely fragmented, and there is a continuing decline in the extent and quality of its forest habitat.

Geographic Range [top]

Range Description: This species is known with certainty only from the Nilgiri Hills of the southern Western Ghats of India. It is a highland species occurring up to 2,000m asl.
Countries:
Native:
India
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: It is commonly seen in the Nilgiri Hills (Bossuyt and Dubois 2001), but is believed to be declining.
Population Trend: Decreasing

Habitat and Ecology [top]

Habitat and Ecology: It is an arboreal species associated with tropical moist evergreen forest, although it can occur in modified areas. Breeding is by direct development.
Systems: Terrestrial

Threats [top]

Major Threat(s): The major threat is the conversion of native forest to intensively cultivated areas (including timber and non-timber plantations).

Conservation Actions [top]

Conservation Actions: It has been recorded from the Nilgiri Biosphere Reserve. The species was recently included in field studies by Biju (1998-2001).
Citation: S.D. Biju, Gajanan Dasaramji Bhuddhe, Bexel Ayyasamy Daniel, Sushil Dutta, Karthikeyan Vasudevan 2004. Raorchestes signatus. In: IUCN 2013. IUCN Red List of Threatened Species. Version 2013.2. <www.iucnredlist.org>. Downloaded on 21 April 2014.
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