Sergeant Emperor
Common NameSergeant Emperor
Scientific NameDilipa fenestra
FamilyNymphalidae
SubfamilyApaturinae
Wingspan (mm)60
Wing Patternstriped
Primary Colorspale blue, orange-brown, white, black
HabitatForested areas, woodland edges, often near streams or damp places
Geographic RangeEast Asia (China, Korea, Japan)
Host PlantsCeltis
Flight PeriodMay to September
Conservation Statusleast-concern
Lifecycle NotesEggs are laid singly on the leaves of host plants from the genus Celtis. Larvae feed on these leaves, and pupae are typically green and suspended.
Identification TipsKey identification features include the unique pale blue-grey underside with wide orange-brown borders and a clear white band on the forewing. The upper side is generally dark brown with white bands.
Description
A medium-sized butterfly with a distinctive underside featuring a pale blue-grey ground color, broad orange-brown margins, and a prominent white band across the forewing.
