About Hypolimnas alimena (Linnaeus, 1758)
Hypolimnas alimena has a wingspan of 80–90 mm. The base colour of its wings is black, marked with a row of white dots and a blue band. This butterfly species is very similar in appearance to the related species Hypolimnas bolina. Compared to H. bolina, male H. alimena have less visually elaborate structural coloration. The dorsal blue colour of H. alimena has weak iridescence and is not very bright. This difference comes from H. alimena's simpler nanoscale wing surface structure, unlike the more complex nanoscale multilayer array structure found in H. bolina that produces a brighter sheen and greater colour saturation.