Leioproctus philonesus, or Leioproctus (Leioproctus) philonesus, 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 1929.
Description Female body length is about 9.5 mm. Colouration is mainly black; the hair white to grey-black and reddish.
Distribution and habitat The species only occurs on Australia's Lord Howe Island in the Tasman Sea. The type locality is Mount Gower.
Behaviour The adults are flying mellivores.
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