Leioproctus tarsalis, or Leioproctus (Protomorpha) tarsalis, is a species of bee in the family Colletidae and subfamily Colletinae. It is endemic to Australia. It was described by Australian entomologist Tarlton Rayment in 1959.
Description Male body length about 7 mm. Integumental colouration mainly black, hair white.
Distribution and habitat The species occurs across much of mainland Australia. The type locality is Caldwell, New South Wales, in the Riverina region.
Behaviour The adults are flying mellivores. Flowering plants visited by the bees include Eucalyptus species.
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