Cupreous Blue
Common NameCupreous Blue
Scientific NameEuchrysops cnejus
FamilyLycaenidae
SubfamilyPolyommatinae
Wingspan (mm)30
Primary Colorsgrey, orange, black, white
HabitatGardens, grasslands, agricultural fields, open woodlands, forest edges
Geographic RangeSouth Asia, Southeast Asia, parts of Australia, Pacific Islands
Host PlantsCajanus cajan, Vigna unguiculata, Phaseolus vulgaris, Glycine max, Medicago sativa, Trifolium spp., Indigofera spp.
Flight PeriodYear-round in tropical regions
Conservation Statusleast-concern
Lifecycle NotesEggs are laid singly on host plant buds or young leaves. Larvae are flattened and often myrmecophilous (tended by ants). Pupation occurs on the host plant or nearby vegetation, with multiple generations per year.
Identification TipsKey features for identification are its small size, the greyish-brown underside, and the distinctive orange patch with a black spot on the hindwing near the tornus. Often found near legume host plants.
Description
A small butterfly with a greyish-brown underside, adorned with rows of black spots ringed in white. The hindwing prominently features an orange patch containing a black spot near the tornus.
