Leioproctus aliceafontanus, or Leioproctus (Colletellus) aliceafontanus, is a species of bee in the family Colletidae and subfamily Colletinae. It is endemic to Australia. It was described by entomologist Remko Leijs in 2018.

Etymology The specific epithet aliceafontanus refers to the distribution of the species in the vicinity of Alice Springs.

Description The male holotype body length is 5.1 mm, head width 1.62 mm. Integumental colouration is mainly black and brown. The hair is mostly white.

Distribution and habitat The species occurs in central Australia. The type locality is the James Range, west of Alice Springs in the south of the Northern Territory.

Behaviour The adults are flying mellivores.

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