Acrodipsas arcana, the black-veined ant-blue or arcana ant-blue, is a butterfly of the family Lycaenidae.

It is found inland on hills in southern Queensland and northern New South Wales in Australia.

They are brown on top, with iridescent blue patches.

The underside is brown, with dark white-edged arcs.

Each hindwing has a pair of black spots on both the over- and underside.