Leioproctus altispinosus, or Leioproctus (Colletellus) altispinosus, is a species of bee in the family Colletidae and subfamily Colletinae. It is endemic to Australia. It was described by entomologist Remko Leijs in 2018.
Etymology The specific epithet altispinosus is both an anatomical reference to the robust setae on the tip of the ventral apical lobe of male sterna 7, and a translation of the name of the authors’ linguistic advisor Wiebe Hogendoorn.
Description The male holotype body length is 5.8 mm, head width 2 mm. Integumental colouration is mainly black, with orange and brown markings. The hair is mostly white.
Distribution and habitat The species occurs in Western Australia. The type locality is 25 km south-west of Tangadee in the Mid West region.
Behaviour The adults are flying mellivores. Flowering plants visited by the bees include Parakeelya polyandra and Dicrastylis flexuosa.
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