Xanthesma robusta, or Xanthesma (Chaetohesma) robusta, is a species of bee in the family Colletidae and the subfamily Euryglossinae. It is endemic to Australia. It was described in 1978 by Australian entomologist Elizabeth Exley.
The species occurs in inland Far North Queensland. The type locality is 15 km east of Forsayth. Other published localities are Georgetown and Mount Surprise.
The adults are flying mellivores. Flowering plants visited by the bees include Eucalyptus species.