Trichocolletes rufibasis is a species of bee in the family Colletidae and the subfamily Colletinae. It is endemic to Australia. It was described in 1929 by British-American entomologist Theodore Dru Alison Cockerell.
Description The male body length is 12 mm. The eyes are not hairy. Colouration is mainly back, with gold, orange-brown and red markings, and with white and yellow hair.
Distribution and habitat The species occurs in Western Australia and South Australia. The type locality is Eradu.
Behaviour The adults are flying mellivores. Flowering plants visited by the bees include Daviesia costata, Daviesia aphylla, Dryandra arborea, Mirbelia depressa and Swainsona microphylla.
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