Schrenck's emperor
Common NameSchrenck's emperor
Scientific NameDilipa fenestra
FamilyNymphalidae
SubfamilyApaturinae
Wingspan (mm)65
Wing Patternstriped
Primary Colorspale blue-grey, orange-brown, black, white, iridescent purple
HabitatForest clearings, forest edges, riverbanks
Geographic RangeEast Asia (Russian Far East, China, Korea, Japan)
Host PlantsUlmus spp. (elm)
Flight PeriodJune to August
Conservation Statusleast-concern
Lifecycle NotesEggs are laid on elm leaves, which serve as the host plant for the larvae. The caterpillars feed on the leaves before pupating, typically producing one generation per year.
Identification TipsKey identification features include the distinctive pale blue-grey underside with its orange-brown and black border, and the iridescent purple-blue sheen on the dark upperside, visible when the wings are open.
Description
A medium-sized butterfly with a striking appearance, featuring a pale blue-grey underside with a prominent orange-brown and black marginal band, and a dark upperside with white bands and an iridescent purplish sheen.
