Leioproctus rugosus, or Leioproctus (Goniocolletes) rugosus, 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 rugosus (Latin: "skinny") refers to the relatively slender metasoma of the females.
Description Female body length is about 12 mm. Integumental colouration is mainly black, the metasoma orange. The hair is white to pale brown.
Distribution and habitat The species occurs in southern Western Australia. The type locality is Balladonia.
Behaviour The adults are flying mellivores.
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