Curetis brunnea is a species of butterfly in the lycaenid subfamily Curetinae.

[1] It was described by Alfred Ernest Wileman in 1909 as Curetis acuta var.

[2] The type locality of Curetis brunnea is on Taiwan.

[1] The species is also distributed from the eastern coast of China to the Himalayas.

[2] The species was described by Wileman as being almost entirely brown, with a faint red area that may be visible on the hindwings, and having an expanse of 46 to 48 mm.