Euploea mulciber prefers tropical rainforests, agricultural and cultivated areas, mangroves and coastal wetlands.
   They fly at a slow pace, and females are often seen visiting flowers and bushes, while males are more often seen visiting mud or puddles.
   They are effective pollinators, fluttering from flower to flower, primarily guided by vivid colors and alluring scents.
   As they feed on pollen, they inadvertently collect and transfer pollen on their bodies, aiding in plant reproduction.
   The common name of this species describes the female, where the hindwing is striped with narrow white streaks.
   The male has bright blue shot dorsal forewings and a reddish brown hindwings.
   The ventral sides are drably colored with white submarginal spots.
   The male is bright blue in the forewing with diffuse white spots in the distal half, while the female is blue with embedded white spots in the distal half of the forewing and several white spots and streaks in the brown basal half.
   Both sexes have a brown hindwing  with the female having additional narrow white streaks arranged as per the Ideopsis species.  
   On the ventral side, the wings are brown with white spots and streaks arranged similarly to those on the dorsal side though with variation in size of the spots and streaks.
   The primary predators of these butterflies are ants, wasps, birds, spiders and rodents.