"Centrolene" medemi is a species of frog in the family Centrolenidae. The species occurs in the Cordillera Oriental in the Tolima, Caquetá, and Putumayo Departments in Colombia and adjacent Napo in Ecuador. The generic placement of this species within the subfamily Centroleninae is uncertain (incertae sedis). The specific name medemi honors Fred Medem, collector of the holotype. Common name Medem giant glass frog has been coined for it.
Adult males measure 26–31 mm (1.0–1.2 in) and adult females 35–44 mm (1.4–1.7 in) in snout–vent length. The snout is rounded in dorsal profile and truncated to slightly protruding when viewed laterally. The tympanum is indistinct and partly covered by the supra-tympanic fold. The fingers have absent to extensive webbing (from inner to outer fingers). The toes are extensively webbed. The dorsal surfaces of head, body, and limbs are olive green to grayish brown and bear large cream spots. The ventral parietal peritoneum is white. Adult males have a large humeral spine. The pre-pollical spine is not separated from the first finger. The iris is grayish brown and has dark reticulation.
Habitat and conservation
This species lives on streamsides in montane cloud forests at elevations of 790–1,800 m (2,590–5,910 ft) above sea level. It also occurs in secondary forest, as long as there is good vegetation cover close to streams. The eggs are laid on leaves overhanging the water.
It is locally common in Colombia, but only one specimen, collected in 1975, is known from Ecuador. The specific threats are poorly known but probably include habitat loss, introduction alien predatory fishes, and pollution from the spraying of illegal crops. Chytridiomycosis might also be a threat.
- IUCN SSC Amphibian Specialist Group 2019. Centrolene medemi. The IUCN Red List of Threatened Species 2019: e.T54926A49364088. Downloaded on 20 July 2019.
- Cochran, Doris M. & Goin, Coleman J. (1970). "Frogs of Colombia". Bulletin of the United States National Museum. 288: 1–678. doi:10.5962/bhl.part.6346. (Centrolenella medemi: p. 511–513)
- Frost, Darrel R. (2017). ""Centrolene" medemi (Cochran and Goin, 1970)". Amphibian Species of the World: an Online Reference. Version 6.0. American Museum of Natural History. Retrieved 11 February 2018.
- Acosta Galvis, A. R. & Cuentas, D. (2017). "Centrolene medemi (Cochran & Goin, 1970)". Lista de los Anfibios de Colombia V.07.2017.0. www.batrachia.com. Archived from the original on 12 February 2018. Retrieved 11 February 2018.
- Ortiz, D.A.; et al. (2011–2016). Ron, S. R.; Yanez-Muñoz, M. H.; Merino-Viteri, A.; Ortiz, D. A. (eds.). "Centrolene medemi". AmphibiaWebEcuador. Version 2018.0. Museo de Zoología, Pontificia Universidad Católica del Ecuador (QCAZ). Retrieved 11 February 2018.
- Guayasamin, J. M.; Castroviejo-Fisher, S.; Trueb, L.; Ayarzagüena, J.; Rada, M. & Vilà, C. (2009). "Phylogenetic systematics of glassfrogs (Amphibia: Centrolenidae) and their sister taxon Allophryne ruthveni". Zootaxa. 2100: 1–97.
- Guayasamin, Juan M.; Cisneros-Heredia, Diego F.; Yánez-Muñoz, Mario & Bustamante, Martín (2006). "Amphibia, Centrolenidae, Centrolene ilex, Centrolene litorale, Centrolene medemi, Cochranella albomaculata, Cochranella ametarsia: range extensions and new country records". Check List. 2 (1): 24–25, 23–26. doi:10.15560/2.1.70.
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