Leioproctus leai, or Leioproctus (Exleycolletes) leai, 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 1913.

Description Female body length is about 12 mm. Colouration is mainly glossy black, the abdomen metallic, with white and cream to reddish-brown hair.

Distribution and habitat The species occurs across Australia. Type localities include Ulverstone, Tasmania; Oakleigh, Victoria; and Yallingup, Western Australia.

Behaviour The adults are flying mellivores. Flowering plants visited by the bees include Bursaria spinosa as well as Carpobrotus, Brassica, Eucalyptus and Melaleuca species.

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