Hylaeus baudinensis, or Hylaeus (Prosopisteron) baudinensis, is a species of bee in the family Colletidae and subfamily Hylaeinae. It is endemic to Australia. It was described by British-American entomologist Theodore Dru Alison Cockerell in 1905.

Distribution and habitat The species occurs in northern Australia. The type locality is Baudin Island on the Kimberley coast of Western Australia. It has also been recorded from Darwin, Northern Territory.

Behaviour The adults are flying mellivores.

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