Adaina scalesiae is a moth of the Pterophoridae family that is endemic to the Galapagos Islands, where it was discovered by Bernard Landry on Bella Vista on April 1, 1992 and on May 25 of the same year on the island of Santa Cruz. The species was also found in Volcan Darwin, a province 15 kilometres (9.3 mi) from Puerto Villamil, on May 25, and 400 metres (1,300 ft) above sea level on Pinta Island where it was found from March 13 to 21. The species is attracted to various lamps including mercury-vapor lamps.