Extended distribution of two frogs from Madagascar: Mantella crocea and Mantella manery (Anura: Mantellidae)

The genus Mantella is composed of 16 species of frogs endemic to Madagascar. More than half of the genus is considered threatened with extinction according to the IUCN. The geographical distribution of several species is still poorly understood and this hinders conservation efforts. I confirm several new localities for two species of Mantella and report geographic coordinates that significantly extend their known distribution. Mantella crocea was confirmed at Zahamena National Park, which broadens its distribution to the north. Mantella crocea was also confirmed in forest bordering the north of Torotorofotsy marsh. Frogs that phenotypically appear to be M. manery were found near Daraina in northeast Madagascar. Here, they occur alongside M. ebenaui, with some individuals intermediate in coloration between the two species, suggesting possible hybridization.