It is monotypic, containing only Agatasa calydonia, the glorious begum, which is found from southern Burma, through the Thai-Malay Peninsula, to Borneo, Sumatra and the Philippines.
Agatasa calydonia is the sole species in this genus; it is known as the glorious begum. This plant is distributed across southern Burma, Thailand, Malaysia, Borneo, Sumatra, and the Philippines.