Leioproctus spinescens, or Leioproctus (Euryglossidia) spinescens, 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 spinescens refers to the spiny hind legs.
Description The male body length is 6.3 mm. Integumental colouration is mainly black, with bronze apical tergal margins. The hair is white.
Distribution and habitat The species occurs in south-west Western Australia. The type locality is 14 km west-south-west of Eneabba.
Behaviour The adults are flying mellivores. Flowering plants visited by the bees include Scholtzia laxiflora.
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