Leioproctus pachyodontus, or Leioproctus (Odontocolletes) pachyodontus, is a species of bee in the family Colletidae and subfamily Colletinae. It is endemic to Australia. It was described by British-American entomologist Theodore Dru Alison Cockerell in 1915.
Description Male body length is 8–9 mm. Colouration is mainly black and red, with white to brownish hair.
Distribution and habitat The species occurs in Western Australia. The type locality is Yallingup. It has also been recorded from north of Geraldton and the Hamersley Range.
Behaviour The adults are flying mellivores. Flowering plants visited by the bees include Baeckea, Seringia and Ptilotus species.
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