M 21-23 mm. Tibiotarsal articulation reaches slightly beyond snout tip. Hand without webbbing, foot with rudimentary webbing. Two dorsolateral dermal ridges. Colouration predominantly light brown. A continuous light stripe along the upper lip (Glaw and Vences 2007).
Variation: It is likely that G. blanci as well as G. boulengeri contain numerous undescribed cryptic species (Glaw and Vences 2007).
Distribution and Habitat
Country distribution from AmphibiaWeb's database: Madagascar
Ambalamarovandana, Fivahona, Imaitso forest, Iorantjatsy, Ivohibe, Ranomafana (Maharira forest, Vohiparara) (Glaw and Vences 2007). It has been recorded from 800-1,200 m asl and may possibly also occur at lower elevations (Vences and Glaw 2008).
Life History, Abundance, Activity, and Special Behaviors
Habits: Similar to G. boulengeri, in which males call during the day from the forest floor, or from perches up to 100 cm above the ground, in both dense rainforest and dense secondary vegetation, away from water (Glaw and Vences 2007).
Calls: Similar to those of G. boulengeri, but with a faster note repetition rate and often with less notes per call (up to 14) (Glaw and Vences 2007).
Trends and Threats
Found within two protected areas: the Parc National de Ranomafana and the Parc National d’Andringitra. Threatened by habitat loss due to increasing subsistence agriculture, logging, charcoal manufacture, invasion and spread of eucalyptus, livestock grazing and expanding human settlement (Vences and Glaw 2008).
Possible reasons for amphibian decline
General habitat alteration and loss
Habitat modification from deforestation, or logging related activities
Intensified agriculture or grazing
Subtle changes to necessary specialized habitat
Taken with permission from Glaw and Vences (2007).
Glaw, F., and Vences, M. (2007). Field Guide to the Amphibians and Reptiles of Madagascar. Third Edition. Vences and Glaw Verlag, Köln.
Vences, M., and Glaw, F. (2008). Gephyromantis blanci. In: IUCN 2008. 2008 IUCN Red List of Threatened Species. www.iucnredlist.org. Downloaded on 24 March 2009.
Written by Miguel Vences and Frank Glaw (m.vences AT tu-bs.de), Assistant Professor and Curator of Vertebrates at the Institute for Biodiversity and Ecosystem Dynamics in the Zoological Museum at the University of Amsterdam
First submitted 2009-03-17
Edited by Kellie Whittaker (2009-03-24)
Species Account Citation: AmphibiaWeb 2009 Gephyromantis blanci <http://amphibiaweb.org/species/6169> University of California, Berkeley, CA, USA. Accessed Feb 23, 2019.
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Citation: AmphibiaWeb. 2019. <http://amphibiaweb.org> University of California, Berkeley, CA, USA. Accessed 23 Feb 2019.
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