Leioproctus gaudii, or Leioproctus (Euryglossidia) gaudii, is a species of bee in the family Colletidae and subfamily Colletinae. It is endemic to Australia. It was described by entomologist Michael Batley in 2025.
Etymology The specific epithet gaudii refers to the species of plant on which the first specimens were collected.
Description The female body length is 9.3 mm. Integumental colouration is mainly black. The hair is mostly white to pale brown.
Distribution and habitat The species occurs in south-eastern Australia. The type locality is Cocoparra National Park in the Riverina region of New South Wales.
Behaviour The adults are flying mellivores. Flowering plants visited by the bees include Gaudium divaricatum.
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