Euhesma atra, or Euhesma (Euhesma) atra, is a species of bee in the family Colletidae and the subfamily Euryglossinae. It is endemic to Australia. It was described in 1998 by Australian entomologist Elizabeth Exley.
Etymology The specific epithet atra refers to the dull black colour of head and thorax.
Description Body length of the female holotype is 5.0 mm, wing length 4.0 mm. Colouration is black, dark brown and yellowish.
Distribution and habitat The species occurs in southern inland Western Australia. The type locality is Boorabbin Rock.
Behaviour The adults are flying mellivores. Flowering plants visited by the bees include Eremophila species.
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