Leioproctus exilicrinitus, or Leioproctus (Minycolletes) exilicrinitus, is a species of bee in the family Colletidae and subfamily Colletinae. It is endemic to Australia. It was described by entomologist Michael Batley in 2025.
Etymology The specific epithet exilicrinitus (Latin: "weak" + "hair") is an anatomical reference to "the sparse hind tibial scopa of the female".
Description The holotype female body length is 5.2 mm, head width 1.7 mm; male body length 4.4 mm, head width 1.6 mm. Integumental colouration is mainly black with brown markings, male metasoma dark brown. The hair is white to brown.
Distribution and habitat The species occurs in eastern New South Wales. The type locality is Mellong Swamp in Wollemi National Park.
Behaviour The adults are flying mellivores. Flowering plants visited by the bees include Poranthera ericifolia, Isopogon anemonifolius and Mitrasacme polymorpha.
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