Leioproctus pectinatus, or Leioproctus (Colletellus) pectinatus, 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 pectinatus refers to the strongly pectinate inner hind tibial spur.
Description The female holotype body length is 6.7 mm, head width 1.9 mm. Integumental colouration is mainly black, orange and brown. The hair is white to orange.
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 Calandrinia species.
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