Blue Banded Eggfly or Hypolimnas alimena is a black butterfly with a blue band on its wings. You can also notice a double row of pale spots on the upper side. The underside is brownish with a smoky pale band. Blue Banded Eggfly is a nocturnal butterfly and is mostly dormant during daylight. They usually feed on Ganges Bluebell and can observe throughout the year. Blue Banded Eggfly’s wings can span up to 7 cm, making it a medium butterfly to observe. This butterfly largely lives in tropical northern Australia, New Guinea, Indonesia, and Soloman Islands. Blue Banded Eggfly has a fast and erratic flight style.