Exoneura melaenaExoneura melaena, or Exoneura melaena, is a species of reed bee in the tribe Allodapini. It is endemic to Australia. It was described in 1918 by British-American entomologist Theodore Dru Alison Cockerell.DescriptionThe body length of the female holotype is 5 mm.Distribution and habitatThe species occurs in south-east Queensland. The type locality is Caloundra.BehaviourThe adults are flying mellivores.