Leioproctus nigrofulvus, or Leioproctus (Leioproctus) nigrofulvus, 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 11.5 mm. Colouration is mainly black and dark red, with pale ochraceous to brown and black hair.

Distribution and habitat The species occurs in eastern Australia. Type localities include Shoalhaven, New South Wales, and Adelaide in South Australia.

Behaviour The adults are solitary flying mellivores that nest in termite mounds. Flowering plants visited by the bees include Daviesia and Dillwynia species.

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