Leioproctus sarogaster, or Leioproctus (Euryglossidia) sarogaster, 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 sarogaster (Greek: "brush + belly") is an anatomical reference to the sternal hair of the female.
Description The female body length is 5.8 mm, the male 5.9 mm. Integumental colouration is mainly black, with yellow-brown markings. The hair is white to pale brown.
Distribution and habitat The species occurs in south-west Western Australia. The type locality is 65 km east of Southern Cross in the central Wheatbelt.
Behaviour The adults are flying mellivores. Flowering plants visited by the bees include Acacia species.
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