Lyssa zampa, the tropical swallowtail moth or Laos brown butterfly, is a moth of the family Uraniidae. The species was first described by British entomologist Arthur Gardiner Butler in 1869.
The species is native to a wide range of tropical South-East Asia: Indonesia, Singapore, Malaysia, Thailand, and the Philippines. It is also recorded from Andaman Islands, southern China, the Himalayas, and sporadically in East Asia: Taiwan, Japan and South Korea. The forewing length is about 70 mm (2.8 in)[6] and the wingspan reaches a maximum of 160 mm (6.3 in).