Euhesma leonora, or Euhesma (Euhesma) leonora, 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 leonora refers to the type locality.
Description Body length of the female is 5.5 mm, wing length 4.0 mm; that of the male is body length 4.5 mm, wing length 3.7 mm. Colouration is mainly black, dark brown and yellowish.
Distribution and habitat The species occurs in southern inland Western Australia. The type locality is 50 km east of Leonora in the Goldfields–Esperance region.
Behaviour The adults are flying mellivores. Flowering plants visited by the bees include Eremophila pantonii.
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