Trichocolletes brachytomus is a species of bee in the family Colletidae and the subfamily Colletinae. It is endemic to Australia. It was described in 2012 by Australian entomologists Michael Batley and Terry Houston.
Etymology The specific epithet brachytomus (Latin: 'clipped') refers to the hair on the supraclypeal area on the faces of the males.
Description The body length is about 12–13 mm. The eyes are hairy. Colouration is mainly black, red and dark to orange-brown, and with white and orange hair. The metasoma is red with indistinct, narrow gold bands.
Distribution and habitat The species occurs in South Australia and far western New South Wales. The type locality is 30 km west of Orroroo, South Australia.
Behaviour The adults are flying mellivores.
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