Description
Centrolene sabini has several traits in common with the Glassfrog genus Centrolene including the presence of humeral spines in the males, nuptial pads in males, tetralobed liver, translucent hepatic peritoneum, a white ventral anterior peritoneum, which covers the heart, green bones, and melanophores turning lavender in preservative, and various behavioral traits. C. sabini is distinguishable by a distinct yellowish white labial stripes which continue into lateral stripes, being larger than its most similar congener C. lemniscatum (ranges 29 - 31 mm), strongly protruding nostrils, depressed internarial area, an obtuse snout profile and by a comparatively long advertisement call. It has a small tympanum, about 16 - 23% of eye diameter, with a pigmented membrane (Catenazzi et al. 2012).

Its coloration in life is green-yellowish, with yellowish patches and spots. Across its back, it is covered with yellowish-green tipped spicules. Its iris is silvery-bronze or cream bearing fine black reticulations. The bones are green (Catenazzi et al. 2012).

Distribution and Habitat

Country distribution from AmphibiaWeb's database: Peru

View distribution map using BerkeleyMapper.

Centrolene sabini was discovered in small streams of the Kosnipata valley, upper Manu National Park in Peru, between the elevations of 2,750 and 2,800 m. At the time of discovery, this is the southernmost occurrence of a species of the Centrolene genus (Catenazzi et al. 2012).

Life History, Abundance, Activity, and Special Behaviors
Catenazzi and colleagues (2012) report that males were active and calling at night at temperatures ranging between 11 - 12.7 degrees celsius. The advertisement calls are long consisting of 8 - 14 peaked notes. Eggs are laid on top of leaves above fast-flowing streams in clutches of 35-45 eggs. The peritoneum of tadpoles have a greenish cast.

Trends and Threats
Catenazzi et al. (2011) also reported the fungus Batrachochytrium dendrobatidis (the causative agent for chytridiomycosis) in several amphibian species from the same valley but none in C. sabini.

The inaccessibility of this region makes it hard to assess.

Comments
The etymology honors Andrew Sabin, in recognition of his support of herpetology.

References

Catenazzi, A., Lehr, E., Rodriguez, L., and Vredenberg, V. (2011). ''Batrachochytrium dendrobatidis and the collapse of anuran species richness and abundance in the Upper Manu National Park, southeastern Peru.'' Conservation Biology, 5, 382-391.

Catenazzi, A., Von May, R., Lehr, E., Gagliardi-Urrutia, G., Guayasamin, J.M. (2012). ''A new, high-elevation glassfrog (Anura: Centrolenidae) from Manu National Park, southern Peru.'' Zootaxa, 3388, 56-68.

Species Account Citation: AmphibiaWeb 2012 Centrolene sabini: Sabin's Glassfrog <http://amphibiaweb.org/species/7868> University of California, Berkeley, CA, USA. Accessed Dec 10, 2018.

Citation: AmphibiaWeb. 2018. <http://amphibiaweb.org> University of California, Berkeley, CA, USA. Accessed 10 Dec 2018.

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