Pseudophilautus dilmah Wickramasinghe, Bandara, Vidanapathirana, Tennakoon, Samarakoon & Wickramasinge, 2015
Dilmah Shrub Frog, Dilmah panduru madiya (Sinhala)
|Species Description: Wickramasinghe LJM, Bandara IN, Vidanapaathirana DR, Tennakoon KH, Samarakoon SR, Wickramasinghe N 2015 Pseudophilautus dilman, a new species of shrub frog (Amphibia: Anura: Rhacophoridae) from a threatened Habitat Loolkandura in Sri Lanka. J Threat Taxa 7:7089-7110.|
Colour in life: Dorsum cream with light brown patches, dark brown cross band between eyes, pair of dark brown dots placed behind the cross band, a pair of broad light brown longitudinal bands ending at the sacrum, dark brown blotches on groin, lateral body lighter with a light olive greenish tinge; limbs cream, fore limbs, hind limbs, fingers and toes with light brown cross bands; ventral side belly off white with light brown blotches, chest off white with few blotching, throat uniform off white, hands, feet and webbing lighter. Colour in alcohol: Colour pattern remains with a little darkening, ventral side off white with dark brown blotching (Wickramasinghe et al. 2015).
Diagnosis: Although Pseudophilautus dilmah is genetically most closest to P. hankeni and P. schmarda, with genetic distances of 1.6% and 1.9% respectively, the species is morphologically distinct and can be separated by the presence of the following combination of characters: from P. hankeni, by snout in lateral aspect rounded (vs pointed), fringe on fingers present (vs absent), interorbital area smooth (vs glandular warts bearing horny spinules), dorsum having tubercles (vs glandular warts bearing horny spinules), upper flank weakly granular (vs glandular warts bearing horny spinules), chest and belly coarsely granular (vs granular); from P. schmarda by snout rounded in lateral aspect (vs obtusely pointed), canthus rostralis rounded (vs sharp), interorbital area smooth (vs glandular folds, glandular warts and horny spinules), dorsum having tubercles (vs glandular folds, glandular warts and horny spinules), upper flank weakly granular (vs glandular warts bearing horny spinules), throat granular (vs glandular warts), chest and belly coarsely granular (vs granular), underside of thigh smooth (vs granular). Furthermore P. hankeni is distributed in the Knuckles massif which is geographically well separated, and although P. schmarda is distributed in the Central Hills, they are allopatric. (Wickramasinghe et al. 2015).
Distribution and Habitat
Country distribution from AmphibiaWeb's database: Sri Lanka
Life History, Abundance, Activity, and Special Behaviors
All frogs of this genus are terrestrial direct developers (Bahir et al. 2005).
Possible reasons for amphibian decline
General habitat alteration and loss
Bahir, M. M., Meegaskumbura, M., Manamendra-Arachchi, K., Schneider, C. J., and Pethiyagoda, R. (2005). ''Reproduction and terrestrial direct development in Sri Lankan shrub frogs (Ranidae: Rhacophorinae: Philautus).'' The Raffles Bulletin of Zoology, 12, 339-350. [link]
Batuwita S, Udugampala S, DeSilva M, Diao J and Edirisinghe U. (2019). "A review of amphibian fauna of Sri Lanka: distribution, recent taxonomic changes and conservation." Journal of Animal Diversity, 1(2), 44-82. [link]
Wickramasinghe, LJM, Bandara IN, Vidanapathirana DR, Tennakoon KH, Samarakoon SR and Wickramasinghe N. (2015). "Pseudophilautus dilmah, a new species of shrub frog (Amphibia: Anura: Rhacophoridae) from a threatened habitat Loolkandura in Sri Lanka." Journal of Threatened Taxa, 7(5), 7089–7110. [link]
Originally submitted by: Dayupathi Eranda Nipunika Mandawala (2021-05-09)
Description by: Dayupathi Eranda Nipunika Mandawala, Michelle S. Koo (updated 2021-05-09)
Distribution by: Dayupathi Eranda Nipunika Mandawala (updated 2021-05-09)
Life history by: Dayupathi Eranda Nipunika Mandawala (updated 2021-05-09)
Comments by: Dayupathi Eranda Nipunika Mandawala (updated 2021-05-09)
Edited by: Michelle S. Koo (2021-05-09)
Species Account Citation: AmphibiaWeb 2021 Pseudophilautus dilmah: Dilmah Shrub Frog <https://amphibiaweb.org/species/8324> University of California, Berkeley, CA, USA. Accessed Mar 26, 2023.
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Citation: AmphibiaWeb. 2023. <https://amphibiaweb.org> University of California, Berkeley, CA, USA. Accessed 26 Mar 2023.
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