Arsacia is a monotypic moth genus of the family Noctuidae.

It is found from the Indo-Australian tropics of India, Sri Lanka to Queensland and the Solomon Islands.

Inner margin lobed and with slight tufts of hair near base and at outer angle.

There is an oblique line runs from apex to middle of inner margin, the area beyond it suffused with pink and with indistinct sub-marginal and marginal series of patches of dark scales.

[2] The larvae feed on the young leaves of Dalbergia species.