Xanthesma euxesta, or Xanthesma (Argohesma) euxesta, is a species of bee in the family Colletidae and the subfamily Euryglossinae. It is endemic to Australia. It was described in 1969 by Australian entomologist Elizabeth Exley.
The species occurs in northern Western Australia. The type locality is the Kimberley Research Station, Wyndham.
The adults are flying mellivores.