New frog species discovered in Costa Rican coffee plantations

Scientists have identified a new species of arboreal frog, Isthmohyla nacientes, endemic to Costa Rica. Discovered in the central Pacific region, the small amphibian measures less than four centimeters in length.

Commonly referred to as the “rana de las nacientes” (spring frog) or “rana cafetera” (coffee frog), the species inhabits the streams and vegetation within coffee plantations. The frogs utilize these areas for shade, moisture, and food, primarily consuming insects. Physical characteristics include a greenish body with large, irregular dark spots on the back and yellow-orange limbs. Male specimens feature a translucent throat that inflates to produce a short, high-pitched call.

The research was conducted by the University of Costa Rica and the National Scientific and Technical Research Council of Argentina. Researchers have noted that while coffee plantations provide a suitable habitat, the use of pesticides in these areas poses a potential threat to the species' survival.