Species Description: Mercurio & Andreone, 2007 Two new canyon-dwelling frogs from the arid sandstone Isalo Massif, central-southern Madagascar (Mantellidae, Mantellinae). Zootaxa 1574: 31-47
Brown dorsal coloration with slight spotting, particularly on canthus rostralis and posterior to the eyes. Supratympanic fold is darker brown than the tympanum. Faint crossbars on limbs. Venter is whitish with irregular brown markings (Mercurio and Andreone 2007).
Similar species: This species is related to Mantidactylus sp. aff. betsileanus (Glaw and Vences 2007). Adults of M. noralottae can be confused with juveniles of M. cf. femoralis and somewhat with adult specimens of M. sp. aff. ulcerosus (Mercurio and Andreone 2007).
M. noralottae can be distinguished from M. cf. femoralis by coloration (in M. noralottae, lighter dorsal coloration, lack of black stripes, presence of yellow spot on flank; slightly marbled ventrally, no black lines on throat; in M. cf. femoralis, darker dorsally, black stripes present, no yellow spot on flank; heavily marbled on throat, often with black lines on throat, spotted belly), body size (smaller in M. noralottae), body shape (slender in M. noralottae, stout in M. cf. femoralis), and shorter hindlimb length (in M. noralottae, tibiotarsal articulation reaches to between eyes and nostrils; in M. cf. femoralis, tibiotarsal articulation reaches to tip of snout or farther) (Mercurio and Andreone 2007).
M. noralottae can be distinguished from M. sp. aff. ulcerosus by coloration (slight spotting in M. noralottae vs. uniform color or dark patches in M. sp. aff. ulcerosus), smooth dorsal skin (vs. granular in M. sp. aff. ulcerosus), slender body (vs. stout in M. sp. aff. ulcerosus), and single prolonged note in the advertisement call (vs. 8-14 notes for M. sp. aff. ulcerosus) (Mercurio and Andreone 2007).
Distribution and Habitat
Country distribution from AmphibiaWeb's database: Madagascar
Life History, Abundance, Activity, and Special Behaviors
Calls consist of a single long note, with a train of 90-100 pulses per note. Each pulse lasts 10-26 milliseconds (ms), each note lasting 2400-2900 ms, and an interval between notes of 5000-7000 ms. The dominant frequency is 1300-1500 Hz, while the fundamental frequency is about 1000 Hz (Mercurio and Andreone 2007).
Breeding is not known. This species probably has larvae (Andreone and Vences 2008).
M. noralottae is sympatric with M. sp. aff. ulcerosus and is syntopic with M. cf. femoralis (Mercurio and Andreone 2007).
Trends and Threats
Andreone, F. and Vences, M. (2008). Mantidactylus noralottae. In: IUCN 2008. 2008 IUCN Red List of Threatened Species. www.iucnredlist.org. Downloaded on 29 April 2009.
Glaw, F., and Vences, M. (2007). Field Guide to the Amphibians and Reptiles of Madagascar. Third Edition. Vences and Glaw Verlag, Köln.
Mercurio, V., and Andreone, F. (2006). ''The amphibians of Isalo Massif: high diversity in an apparently unsuitable habitat.'' A Conservation Strategy for the Amphibians of Madagascar, Antananarivo 18–21 Sept. 2006, Book of Abstracts. F. Andreone and H. Randriamahazo, eds., Meeting proceedings.
Mercurio, V., and Andreone, F. (2007). ''Two new canyon-dwelling frogs from the arid sandstone Isalo Massif, central-southern Madagascar (Mantellidae, Mantellinae).'' Zootaxa, 1574, 31-47.
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 2009-04-29
Edited by Kellie Whittaker (2009-04-30)
Species Account Citation: AmphibiaWeb 2009 Mantidactylus noralottae <http://amphibiaweb.org/species/6986> University of California, Berkeley, CA, USA. Accessed Jan 22, 2019.
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Citation: AmphibiaWeb. 2019. <http://amphibiaweb.org> University of California, Berkeley, CA, USA. Accessed 22 Jan 2019.
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