Arhopala hylanderArhopala hylander is a butterfly in the family Lycaenidae. It was discovered by Henley Grose-Smith in 1894. It is found in Biak. This species is monotypic.DescriptionThe male is shining blue on the upperside, with a thin black border. The female is more purple with a broader black border on the upperside. The wings are uniform brown on the underside of both sexes, with the spots less clearly defined.