A female individual of Alsodes vittatus (Credit: Edvin Riveros) CONCEPCIÓN, Chile — For 130 years, a small Chilean frog vanished from scientific view. Biologists searched. Nature enthusiasts kept their eyes open. But Alsodes vittatus remained stubbornly invisible, known only from a single preserved specimen and the yellowed pages of a century-old scientific description. That changed when a team of determined researchers from Chilean universities finally located not one but three populations of this mythical amphibian hiding in remote Andean streams. Their March 2025 paper in the journal ZooKeys documents what might be the most exciting amphibian rediscovery in South America...