Dull Oak-Blue

About the Dull Oak-Blue

Arhopala centaurus, the centaur oakblue or dull oakblue, is a species of lycaenid or blue butterfly found in India and southeast Asia to the Philippines. Male. Upperside very dark blue with a violaceous tint, with black outer marginal fine border and black cilia, a rather broad black tail at the end of vein 2, a slight angular, black projection at the end of vein 1, abdominal space pale. Underside. Forewing with the basal half above the median vein dark violet-brown, the outer portion above that vein somewhat paler, the lower portion of the wing pale ochreous brown; a large round spot inside the cell near the base, a large bar in the middle, and another, larger still, at the end, very slightly darker than the ground colour, formed by their very prominent pale blue edgings, a small pale ringed spot on the costa, above the outer bar, an oblique angled spot below it on its inner side, a round spot below the middle bar, both edged with pale blue, a discal band of large conjoined more or less square spots increasing in size hindwards to vein 2, where it is joined on its inner edge to a large square spot in the next interspace, all edged on both sides with whitish; a sub... Wikipedia →