Neves, M. O., L. A. Silva, P. S. Akieda, R. Cabrera, R. Koroiva & D. J. Santana

A new species of poison frog, genus Ameerega (Anura: Dendrobatidae), from the southern Amazonian rain forest. pp. 485-493 plus Supplementary document 1 (list of GenBank sequences) and Supplementary document 2 (uncorrected p-distances).

Abstract. A new species of poison frog in the Ameerega picta group is described from Amazonia, states of Pará and Mato Grosso. It inhabits rock outcrops in open areas near streams of the central Teles Pires River system. The new species differs from congeners by the combination of four characters: 24.87–28.59 mm adult SVL, black immaculate dorsum, white ventral side with black vermicular blotches, and an orange stripe in the axillar region. Genetically, the new species is most closely related to A. flavopicta.

Key words. Amphibia, Anura, Dendrobatidae, Ameerega sp. n., A. picta group, systematics, taxonomy, Brazil.