Researchers report the discovery of a tiny, greenish nocturnal frog species in Costa Rica’s central Pacific region. The frog, described as a tree frog and nicknamed the “coffee frog” or “spring frog,” is found in and around coffee plantations.

Reporting from AFP observations, outlets describe the animal as less than four centimeters long and marked with dark green spots. Researchers say the species is endemic to Costa Rica and is characterized by calls made by males with a distinctive translucent throat that inflates as they sing. They note the frogs are active at night and perch on coffee shrubs.

The accounts also converge on the environmental context: scientists say the species is exposed to agrochemicals used in coffee farming. One reported concern is that pesticides can travel through air and soil and reach aquatic systems where tadpoles develop. While outlets differ slightly in wording and emphasis, they present the same core findings—new species status, its coffee-plantation habitat, and potential risks from pesticide use.