Ranwella's Spined Treefrog (English), Ranwellage anga gas gemba (Sinhala), Ranwellavin mul marath tavalai (Tamil)
Species Description: Wickramasinghe LJM, Munindradasa DAI, Fernando P. 2012. A new species of Polypedates Tschudi (Amphibia, Anura, Rhacophoridae) from Sri Lanka. Zootaxa 3498: 63-80.
© 2012 L. J. Mendis Wickramasinghe (1 of 1)
Colour in life. The body colour varies from black spots on white to green, yellow being more frequent; dorsal part of head and dorsum, and upper part of flank with very small black spots on bright luminous yellow; lower part of flank marbled with black and off-white; loreal and tympanic regions and tympanum with small black spots on luminous yellow; upper lip small and moderate, black spots on light yellow; forelimb with faint black stripes on yellow and small black spots all over, upper arm with two-three stripes and lower arm with one stripe; lower arm having faint black stripe on yellow with black spots; tibia and tarsal with three faint black stripes on yellow and scattered small black spots, occasional stripe on knee; posterior part of femur marbled with black and whitish yellow, ventral part white with shaded black; throat, vocal sacs, chest and belly all white; margin of throat whitish yellow with black spots; webbing dark brown (Wickramasinghe et al., 2012).
Colour in alcohol. Colour of spots and stripes degraded a little from above. Body colour turned to light grey. Female colour pattern is the same as the male both in life and after preservation (Wickramasinghe et al. 2012).
Distribution and Habitat
Life History, Abundance, Activity, and Special Behaviors
Breeding. A pair of P. ranwellai have been observed in axillary amplexus on a branch 1.5 m above ground in the subcanopy shrubs. Slowly the pair came down the branch onto the ground. Then the female started slowly moving backwards burrowed into the leaf litter and upon reaching the soil layer, the female started slowly digging with a movement of her hind limbs but due to low light conditions and camouflaged nature they could not be relocated. However, this observation was not sufficient to conclude if they are foam-nesters or a direct developing species (Wickramasinghe et al. 2012). Other members of Polypedates are known to be foam-nesters (e.g., Polypedates leucomystax).
As of yet, no molecular phylogenetic analysis has been done on this species to determine its relation to other members of the same genus. When such analysis is done, it is highly likely that this species may be assigned to a different genus or a totally new genus of its own.
Wickramasinghe L.J.M., Munindradasa D.A.I. and Fernando P. (2012). "A new species of Polypedates Tschudi (Amphibia, Anura, Rhacophoridae) from Sri Lanka." Zootaxa, 3498, 63-80. [link]
Originally submitted by: Dayupathi Eranda Nipunika Mandawala (2021-05-21)
Description by: Dayupathi Eranda Nipunika Mandawala (updated 2021-05-21)
Distribution by: Dayupathi Eranda Nipunika Mandawala (updated 2021-05-21)
Life history by: Dayupathi Eranda Nipunika Mandawala (updated 2021-05-21)
Comments by: Dayupathi Eranda Nipunika Mandawala (updated 2021-05-21)
Edited by: Michelle S. Koo (2021-08-01)
Species Account Citation: AmphibiaWeb 2021 Polypedates ranwellai: Ranwella's Spined Treefrog (English) <https://amphibiaweb.org/species/7911> University of California, Berkeley, CA, USA. Accessed Jul 1, 2022.
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Citation: AmphibiaWeb. 2022. <https://amphibiaweb.org> University of California, Berkeley, CA, USA. Accessed 1 Jul 2022.
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