Castalius rosimon FabriciusFamily: LycaenidaeSubfamily: PolyommatinaeTribe: PolyommatiniSubtribe: PolymatitiGenus: CastaliusSpecimensCastalius rosimon rosimonCollector: H. S. BarlowLocality: Telaga Hill, Raub, Pahang, MalaysiaDate: 23-12-2017UppersideUnderside