About Macrobrochis gigas (Walker, 1854)
Macrobrochis gigas is a moth species belonging to the family Erebidae. It was first described by Francis Walker in 1854. This species can be found in Yunnan (China), Sikkim (India), Bhutan, Nepal, Indonesia, Thailand, Hong Kong, and Taiwan. Its natural habitat is woodlands. Adult Macrobrochis gigas have been recorded flying from March to May, and the species produces one generation per year. Macrobrochis gigas is possibly involved in a mimicry relationship with Eterusia aedea. It can be distinguished from other species in the same genus by the following morphological features: head and collar are orange; the thorax is black with a green metallic tinge on its upper side, and orange on its lower side; tegulae are marked with orange stripes; abdomen is greenish black, with an orange extremity and ventral surface; each abdominal segment has white bands or lateral spots along its hind border; forewings are black with a green tinge, with a small white spot at the base, a larger white spot just beyond the base, a white spot at the end of the cell, and an additional white spot below the cell; the basal half of the hindwing is white, and the outer half is black. Mass aggregation and feeding behavior of both adult and larval Macrobrochis gigas has been observed at multiple sites in South India.
