Leioproctus nasutiformis, or Leioproctus (Euryglossidia) nasutiformis, 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 nasutiformis (Latin: "in the form of a snout") is an anatomical reference to the prominent clypeus.
Description The female body length is 8 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 the south of Western Australia. The type locality is 60 km north of Norseman in the Goldfields–Esperance region.
Behaviour The adults are flying mellivores. Flowering plants visited by the bees include Eremophila scoparia.
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