Leioproctus davisi, or Leioproctus (Filiglossa) davisi, is a species of bee in the family Colletidae and subfamily Colletinae. It is endemic to Australia. It was described by Australian entomologist Glynn Maynard in 1994.

Etymology The specific epithet davisi honours G.J. Davis.

Description Female body length is about 5 mm, male body length 4–4.5 mm. Integumental colouration is mainly black; the metasoma of females is orange-brown, that of males black with a broad yellow band.

Distribution and habitat The species occurs in Victoria. The type locality is Powelltown. It has also been recorded from Mount Baw Baw.

Behaviour The adults are solitary flying mellivores that nest gregariously in the ground. Flowering plants visited by the bees include Persoonia arborea.

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