A new Reed Frog (Hyperoliidae: Hyperolius) from coastal northeastern Mozambique

Area of Science:

• Herpetology
• Biodiversity research
• Molecular systematics

Background:

• The Eastern Africa Biodiversity Hotspot is rich in endemic species.
• The genus Hyperolius (reed frogs) is diverse and requires ongoing taxonomic research.
• Limited data exists on amphibian diversity in Mozambique's coastal pans system.

Purpose of the Study:

• To describe a new species of African reed frog.
• To determine the phylogenetic placement of the new species within the Hyperolius genus.
• To differentiate the new species from closely related taxa using multiple criteria.

Main Methods:

• Field surveys in northeastern Mozambique's coastal forests.
• Phylogenetic analysis using mitochondrial 16S ribosomal RNA (16S mtDNA) gene sequences.
• Comparative analysis of morphology, vocalizations, and dorsal coloration.

Main Results:

• A new Hyperolius species is described from northeastern Mozambique.
• Phylogenetic analysis places the new species as the sister taxon to Hyperolius mitchelli, forming a distinct complex.
• The new species exhibits significant genetic divergence (>5.6% 16S mtDNA sequence divergence) and unique characteristics in morphology, vocalization, and coloration compared to related Hyperolius.

Conclusions:

• The newly described reed frog is a distinct species within the Hyperolius genus.
• Its restricted known range highlights the importance of conserving the Mozambican coastal pans system.
• Further research is needed to ascertain its full distribution, potentially including southeastern Tanzania.