27-28 mm. Dorsal colour variable: uniformly brown, or with partly or almost entirely green back. Flanks black or partly greenish, with relatively large green flank blotches. No sharply delimited rostral stripes and no flashmarks. Iris with light pigment in its upper part. Ventrally black with blue spots and without red colour. Throat without continuous horseshoe marking (Glaw and Vences 2007).
Similar species: M. pulchra and M. baroni differ by reddish ventral colour (Glaw and Vences 2007).
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, KÃ¶ln.
- Raxworthy, C. and Andreone, F. (2008). Mantella nigricans. In: IUCN 2008. 2008 IUCN Red List of Threatened Species. www.iucnredlist.org. Downloaded on 22 April 2009.