Adults 22-29 mm. Head, dorsum and flanks deep black. Rostral and frenal stripes absent. Proximal part of femur and humerus generally red (exceptionally orange or yellow). This colour extending onto the flanks as small flank blotches, and is also present as a broad band on tarsus and foot (sometimes disrupted by black markings). A light spot below the eye sometimes present. No flashmarks. Iris without light pigment. Ventral side black with circular whitish-blue markings. Single markings on throat, but no horseshoe marking. Broad red bands on tibia, tarsus and foot which correspond to those on the dorsal surface. Colour morphs intermediate between baroni and cowani occur, probably due to hybridization.
Similar species: None, but hybrids with M. baroni occur.
Taken with permission from Glaw and Vences (2007).
- Andreone, F. and Vences, M. (2008). Mantella cowanii. In: IUCN 2008. 2008 IUCN Red List of Threatened Species. www.iucnredlist.org. Downloaded on 22 April 2009.
- Glaw, F., and Vences, M. (2007). Field Guide to the Amphibians and Reptiles of Madagascar. Third Edition. Vences and Glaw Verlag, KÃ¶ln.