Raorchestes resplendens Biju, Shouche, Dubois, Dutta & Bossuyt, 2010
Resplendent Shrub Frog
|Species Description: Biju SD, Shouche Y, Dubois A, Dutta SK, Bossuyt F 2010 A ground-dwelling rhacophorid frog from the highest mountain peak of the Western /ghats of India. Current Science 98:1119-1125.|
© 2016 Benjamin Tapley / ZSL (1 of 1)
This frog’s distinct red, orange, yellow, and blackish coloration distinguishes it from other Raorchestes. The limbs are also short relative to other members of the genus. This results in a pronounced mode of crawling dissimilar to the other members of Raorchestes (Biju et al. 2010).
In life, this frog is brightly colored, displaying reds, yellows, oranges, and blackish-browns. The blackish-brown coloration is found along the sides and around the eyes. The back is primarily a deep brick red, with blackish-brown filling the irregularities caused by the macro glands in the skin. The limbs are deep brick red all throughout. The underside is light yellow throughout. This frog has bright red irises. In alcohol, the deep brick red fades to brown, contrasting with the black furrows, and the sides fade to light yellow. The limbs fade from deep brick red to reddish gray, and the underside to yellowish white (Biju et al. 2010).
No sexual dimorphism is apparent other than females being slightly larger in snout-vent range (Biju et al. 2010).
Distribution and Habitat
Country distribution from AmphibiaWeb's database: India
Life History, Abundance, Activity, and Special Behaviors
Raorchestes resplendens has a peak breeding season between May and September (Das et al. 2020). Calling males vocalize at ground level often within layers of vegetation to attract mates (Garg et al. 2021). Due to its expansion, the gular pouch becomes large and transparent when calling (Biju et al. 2010). Males produce a non-pulsatile call differing from those of other bush frogs, as well as pulsatile calls (Das et al. 2020; Garg et al. 2021).
Once a female is attracted to a male’s call, they engage in inguinal and axillary amplexus for fertilization. The female deposits her eggs in burrows at the base of bamboo clumps under moss covering and potentially mate multiple times each season and/or with other mates. There is no parental care; the nest is abandoned by both parties following oviposition (Biju et al. 2010).
Raorchestes resplendens undergoes direct development, without a free swimming tadpole stage, over the course of 22 - 27 days (Biju et al. 2010).
Trends and Threats
Possible reasons for amphibian decline
General habitat alteration and loss
At the time of the species description, Maximum Likelihood and Bayesian Inference analyses of a matrix of mtDNA sequences indicated that R. resplendens was most closely related to the clade compose of R. beddomii and R. munnarensis. The next most closely related species is R. dubois. However, the support for these relationships was low and thus any of these three species could be the sister taxon (Biju et al. 2010). Further Maximum Likelihood and Bayesian Inference analyses on three mtDNA and two nuclear gene fragments indicate that R. resplendens is sister to R. munnarensis. Together they are sister to the clade composed of R. beddomii and R. theuerkaufi, with R. dubois being basal to the group, and rounding out the R. beddomii species complex (Garg et al. 2021).
The genus name, “Raorchestes”, is derived from “Rao”, which is in honor of C. R. Narayan Rao, a major contributor to batrachology in India, and “orchestes”, which is a generic term originally used to describe the Philautus genus, a genus nested in the Rhacophoridae family (Biju et al. 2010).
The species epithet, “resplendens”, is Latin and refers to their bright coloration (Biju et al. 2010).
Biju, S. D., Shouche, Y., Dubois, A., Dutta, S. K., and Bossuyt, F. (2010). "A ground-dwelling rhacophorid frog from the highest mountain peak of the Western Ghats of India." Current Science, 98(8), 1119-1125. [link]
Das, S., Rajkumar, K.P., Sreejith, K.A., Royaltata, M., Easa, P.S. (2020). “New locality records and call description of the resplendent shrub frog Raorchestes resplendens (Amphibia: Anura: Rhacophoridae) from the Western Ghats, India”. Journal of Threatened Taxa 12(11): 16502–16509. [link]
Garg S., Suyesh R., Das S., Bee M.A., Biju S.D. (2021). “An integrative approach to infer systematic relationships and define species groups in the shrub frog genus Raorchestes, with description of five new species from the Western Ghats, India.” PeerJ 9:e10791 [link]
IUCN SSC Amphibian Specialist Group. (2011). “Raorchestes resplendens.” The IUCN Red List of Threatened Species 2011: e.T189814A8772103. https://dx.doi.org/10.2305/IUCN.UK.2011-1.RLTS.T189814A8772103.en. Accessed in February 2022.
Originally submitted by: Katia Goldberg, Jaime Menendez, Mia Reed (2022-07-22)
Description by: Katia Goldberg, Jaime Menendez, Mia Reed (updated 2022-07-22)
Distribution by: Katia Goldberg, Jaime Menendez, Mia Reed (updated 2022-07-22)
Life history by: Katia Goldberg, Jaime Menendez, Mia Reed (updated 2022-07-22)
Trends and threats by: Katia Goldberg, Jaime Menendez, Mia Reed (updated 2022-07-22)
Comments by: Katia Goldberg, Jaime Menendez, Mia Reed (updated 2022-07-22)
Edited by: Ann T. Chang, Michelle S. Koo (2022-08-18)
Species Account Citation: AmphibiaWeb 2022 Raorchestes resplendens: Resplendent Shrub Frog <https://amphibiaweb.org/species/7509> University of California, Berkeley, CA, USA. Accessed Mar 28, 2023.
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Citation: AmphibiaWeb. 2023. <https://amphibiaweb.org> University of California, Berkeley, CA, USA. Accessed 28 Mar 2023.
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