Deudorix epijarbas, the cornelian or hairy line blue,[1][2] is a species of lycaenid or blue butterfly found in south and southeast Asia from India to Fiji, including the Philippines, and also the tropical coast of Queensland in Australia.

Forewing with a thick bar, with a pale white line splitting it at the end of the cell; a discal almost straight rather broad band narrowing gradually hindwards, a sub-marginal series of thick lunular marks, edged outwardly with white, its lower end close to the lower end of the discal band.

Hindwing with a thick bar with a pale white line running through it, at the end of the cell; a discal series of seven conjoined spots, the upper six squarish, the seventh angled, the series irregular, the second spot a little outwards, the fifth a little inwards, touching the lower end of the spot of the discoidal band, decreasing in size hindwards, the angular .spot running in on to the abdominal margin one-third above the anal augle, a submarginal series of similar spots, increasing in size liinclwards, anal lobe black, a linear white mark, and a curved streak of metallic blue scales above it, a black spot in the first interspace, ringed with orange.

Forewing with some fulvous suffusion below the median vein, varying in extent in different examples.

The larvae feed on Sapindus trifoliatus, Euphoria longan, Litchi chinensis, Aesculus indicus, Connarus species (in seed capsules), Harpullia pendula, Pometia pinnata, Caryota rumphiana and Sarcopteryx martyana.