Hylaeus nigrescens, or Hylaeus (Prosopisteron) nigrescens, is a species of bee in the family Colletidae and subfamily Hylaeinae. It is endemic to Australia. It was described by British-American entomologist Theodore Dru Alison Cockerell in 1918.
Description Integumental colouration is mainly black, with brown markings.
Distribution and habitat The species occurs in eastern Australia. The type locality is Bribie Island in south-eastern Queensland.
Behaviour The adults are flying mellivores.
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