Arhopala democritus or white-dot oakblue, is a species of butterfly belonging to the lycaenid family described by Johann Christian Fabricius in 1793."Arhopala Boisduval, 1832" at Markku Savela's Lepidoptera and Some Other Life Forms. Retrieved June 9, 2017. It is found in Southeast Asia (Burma, Thailand, Mergui, Indochina, Langkawi, Peninsular Malaya, Singapore, Sumatra and Borneo).Seitz, A., 1912-1927. Die Indo-Australien Tagfalter. Theclinae, Poritiinae, Hesperiidae. Grossschmetterlinge Erde 9: 799-1107, pls. 138-175Eliot, J. N. 1992. With plates by D'Abrera, in Corbet & Pendlebury. The Butterflies of the Malay Peninsula 4th Edn. Malayan Nature Society, Kuala Lumpur
Male above Morpho-blue, female likewise of a bright blue, though not reflecting so much, with a broad black marginal band of the forewing which begins thin before the centre of the costa, growing 5 mm broad behind the cell, and ending again thin at the anal angle. The under surface is particularly characteristic, since on the dark chestnut-brown ground all the rings and bands are broken up into small commata and dots, so that the chains are hardly noticeable.Seitz, A. Band 9: Abt. 2, Die exotischen Großschmetterlinge, Die indo-australischen Tagfalter, 1927, 1197 Seiten 177 Tafeln
Subspecies Arhopala democritus democritus (Burma, Thailand, Mergui, Indo China, Langkawi, northern Peninsular Malaysia) Arhopala democritus lycaenaria (C. & R. Felder, 1860) (southern Peninsular Malaya, Singapore) Arhopala democritus buxtoni (Hewitson, 1878) Sumatra Arhopala democritus olinda (Druce, 1873) Borneo
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