Leioproctus castaneipes, or Leioproctus (Leioproctus) castaneipes, is a species of bee in the family Colletidae and subfamily Colletinae. It is endemic to Australia. It was described by British-American entomologist Theodore Dru Alison Cockerell in 1914.

Description Male body length is about 10 mm. Colouration is mainly black, with chestnut and red markings, the abdomen reddish, with white to brownish hair.

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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