Leioproctus rutiliventris, or Leioproctus (Fragocolletes) rutiliventris, is a species of bee in the family Colletidae and subfamily Colletinae. It is endemic to Australia. It was described by Australian entomologist Glynn Maynard in 2013.
Etymology The specific epithet rutiliventris (Latin: "red" + "abdomen") refers to the metasoma.
Description Male body length is about 6 mm. Integumental colouration is mainly black, with orange on the metasoma. The hair is mostly white.
Distribution and habitat The species occurs in north-western Queensland. The type locality is Knob Lagoon, 42 km north-west of Doomadgee Mission.
Behaviour The adults are flying mellivores.
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