Exoneura holmesiExoneura holmesi, or Exoneura holmesi, is a species of reed bee in the tribe Allodapini. It is endemic to Australia. It was described in 1946 by Australian entomologist Tarlton Rayment.DescriptionThe body length is 5–6 mm.Distribution and habitatThe species occurs in south-eastern Australia. The type locality is Heathcote, New South Wales.BehaviourThe adults are flying mellivores. One nesting site was a gallery in a dead Banksia branch. Flowering plants visited by the bees include Leptospermum species.