Leioproctus mutabilis, or Leioproctus (Euryglossidia) mutabilis, is a species of bee in the family Colletidae and subfamily Colletinae. It is endemic to Australia. It was described by entomologist Michael Batley in 2025.
Etymology The specific epithet mutabilis (Latin: "changeable") refers to the variable surface sculpture.
Description The female body length is 7 mm, the male 5 mm. Integumental colouration is mainly black, with weak iridescence and brown markings. The hair is white to brown.
Distribution and habitat The species occurs in inland Western Australia. The type locality is 6 km west-south-west of Nalbarra Station, near Paynes Find in the Mid West region.
Behaviour The adults are flying mellivores. Flowering plants visited by the bees include Grevillea eriostachya, Hakea multilineata and Hakea preissii.
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