The Wing Atlas
Sumatran Sunbeam

Sumatran Sunbeam

Common NameSumatran Sunbeam
Scientific NameCuretis saronis
FamilyLycaenidae
SubfamilyCuretinae
Wingspan (mm)35
Wing Patternspotted
Primary Colorspale grey, white, brown
HabitatTropical forests, forest edges, clearings
Geographic RangeSumatra, Southeast Asia
Host PlantsDerris, Pongamia, Robinia
Flight PeriodYear-round
Flight Styledarting
Conservation Statusleast-concern
Lifecycle NotesLarvae are often myrmecophilous, forming symbiotic relationships with ants that protect them from predators in exchange for honeydew secretions.
Identification TipsLook for the distinctive pale underside with faint crescent markings and the angular wing shape. The upper side, if seen, is typically iridescent orange or red.

Description

This butterfly displays pale greyish-white undersides with subtle, crescent-shaped markings and a thin brown border along the wing edges. Its body is dark, and its legs are reddish-brown.

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