At about 8–11.5 mm (0.31–0.45 in) in snout–vent length, M. mum and M. scule are two of the world's smallest frogs, and the larger M. ature is only c. 15 mm (0.6 in).[1][2][3][4] They were formerly confused with Stumpffia, another genus of tiny frogs from Madagascar. All are well-camouflaged brown frogs.[1]
Species
The genus name is derived from English prefix "mini-", denoting a small version of an object. All the binomials names are examples of wordplay as they sound like words for small in English. There are currently 3 species:[1]
Diminutive terrestrial frogs (adult SVL 8.2–14.9 mm) with divided vomers, procoelous vertebral column, divided sphenethmoids, and genetic affinities. Skin smooth to slightly granular, occasionally iridescent. A lateral colour border is present but varies in intensity among species. Highly reduced fingers and toes, fusion or loss of carpal 2, and paedomorphic skull morphology: laterally displaced narrow nasals, teeth absent from vomer, in some species present on the maxilla and premaxilla, otic capsule sometimes dorsally ossified, brain case comprising most of the skull’s length and width.[1]
Distribution
The genus Mini is apparently endemic to low-elevation habitats (0–350 m a. s. l.) of southeastern Madagascar.[1]
