Euhesma melanosoma, or Euhesma (Euhesma) melanosoma, is a species of bee in the family Colletidae and the subfamily Euryglossinae. It is endemic to Australia. It was described in 1914 by British-American entomologist Theodore Dru Alison Cockerell.
Description Female body length is about 4.5 mm. Colouring is mainly glossy black.
Distribution and habitat The species occurs in south-west Western Australia. The type locality is Yallingup.
Behaviour The adults are flying mellivores.
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