A tiny greenish, nocturnal frog that thrives in coffee plantations was discovered in Costa Rica's central Pacific region, where it also faces risks from agrochemicals used in farming. Measuring less than 4 centimeters and known as the "spring frog," AFP reporters observed the dark green-spotted amphibians in San Lorenzo de Tarrazu. View of a "Rana de las nacientes" (Isthmohyla nacientes), a newly discovered frog species, in San Jose, Costa Rica, on Aug. 6, 2026. Also nicknamed the "coffee frog," the species has another distinctive trait: males have a translucent throat that inflates with their short, high-pitched call. Costa Rican scientists from the International Institute for Wildlife Conservation and Management at the National University of Costa Rica photograph a newly discovered frog species, "Rana de las nacientes" (Isthmohyla naciente).