Pristimantis rupicola Taucce, Nascimento, Trevisan, Leite, Santana, Haddad & Napoli, 2020
Rock-Dwelling Robber Frog
|Species Description: Taucce PPG, JS Nascimento, CC Trevisan, FSF Leite, DJ Santana, CFB Haddad, and MF Napoli. 2020. A New Rupicolous Species of the Pristimantis conspicillatus Group (Anura: Brachycephaloidea: Craugastoridae) from Central Bahia, Brazil. Journal of Herpetology 54: 245-257.|
Pristimantis rupicola can be distinguished from other similar species based on a few key morphological traits. The frog can be differentiated from species in the P. conspicillatus group, which includes its most closely related species, P. gaigei, because P. rupicola has a dorsal surface that is similar in appearance to granite rock and it has a varying amplitude advertisement call. Pristimantis rupicola can also be differentiated from P. gaigei in that the former has a rounded snout, a granular dorsal surface, and a smooth ventral surface. Additionally, male P. rupicola frogs can be further differentiated from P. gaigei due to their possession of vocal slits (Taucce et al. 2020).
In life, the skin of the dorsum most often appears in a range from light brown to yellowish-brown, interrupted by blackish-brown marks, which resemble that of a granite rock surface. Additionally, P. rupicola is found with skin in varying shades of rust. With respect to the ventral surfaces, it often appears as a pinkish-white shade that features dark spots. The spotting pattern is often concentrated on the extremities. Pristimantis rupicola does not have dorsal stripes, and the eyes of most observed specimens appear bluish or yellowish (Taucce et al. 2020).
Most adult female specimens of P. rupicola had a greater size than the males, and males possess vocal slits and nuptial pads. In terms of variation between observed specimens, some snouts appeared more prominently truncated in dorsal view, and Finger I is either slightly smaller, equal to, or slightly larger than Finger II. Additionally, some specimens exhibited a pattern of dark brown spots in the shape of a W on the dorsum (Taucce et al. 2020).
Distribution and Habitat
Country distribution from AmphibiaWeb's database: Brazil
Life History, Abundance, Activity, and Special Behaviors
The advertisement calls of P. rupicola are relatively short (0.011 – 0.086 s) and composed of single notes that are either pulsed or not. When notes are pulsed there can be 2 - 23 pulses that last 0.002 - 0.015 s each at a rate of 166.7 - 500.0 pulse/s. Intercall intervals ranged from 1.74 - 5.30 s. The calls show amplitude modulation with energy decreasing throughout the length of the call and a dominant frequency from 2.41 to 3.49 kHz. Two additional, but less emphasized frequency peaks are also present with the second peak ranging from 4.0 to 6.9 kHz and the third peak ranging from 8.09 to 10.47 kHz (Taucce et al. 2020).
Trends and Threats
The genus, Pristimantis, is known to be highly diverse and therefore likely to contain cryptic species. To determine genetic relationships, a phylogenetic tree was created based on Bayesian Inference and Maximum Likelihood analysis of the 16S ribosomal RNA gene. In that tree, P. gaigei and P. rupicola formed a clade, suggesting that they are sister taxa and are most closely related to each other (Taucce et al. 2020).
The species epithet is derived from the word “rupes”, which is Latin for “rocks” in combination with the suffix “-cola”, meaning “dweller”. Therefore, put together, the species epithet, “rupicola” signifies the frog as a “rock dweller” (Taucce et al. 2020).
OTHER INTERESTING INFORMATION:
A suggested vernacular name for P. rupicola is “Rock-Dwelling Robber Frog” (Taucce et al. 2020).
Taucce, P. P. G., Nascimento J. S., Trevisan C. C., Leite, F. S. F., Santana, D. J., Haddad, C. F. B., Napoli, M. F. (2020). "A new rupicolous species of the Pristimantis conspicillatus group (Anura: Brachycephaloidea: Craugastoridae) from Central Bahia, Brazil." Journal of Herpetology, 54(2), 245-257. [link]
Originally submitted by: Darilyn Blumenfeld (2022-11-22)
Description by: Darilyn Blumenfeld (updated 2022-11-22)
Distribution by: Darilyn Blumenfeld (updated 2022-11-22)
Life history by: Darilyn Blumenfeld (updated 2022-11-22)
Trends and threats by: Darilyn Blumenfeld (updated 2022-11-22)
Comments by: Darilyn Blumenfeld (updated 2022-11-22)
Edited by: Ann T. Chang (2022-11-22)
Species Account Citation: AmphibiaWeb 2022 Pristimantis rupicola: Rock-Dwelling Robber Frog <https://amphibiaweb.org/species/9190> University of California, Berkeley, CA, USA. Accessed Mar 29, 2023.
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Citation: AmphibiaWeb. 2023. <https://amphibiaweb.org> University of California, Berkeley, CA, USA. Accessed 29 Mar 2023.
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