A new acrocirrid species, Flabelligena hakuhoae sp. nov., is described from off the South Orkney Islands, the Southern Ocean. Individuals of the new species were collected by rock dredging, 2036–2479 m in depth.
The new species can be distinguished from its congeners by the number of branchiae, position and length of paired ventral large papillae and length of body papillae.