Hypochrysops piceatus, commonly referred to as the bulloak jewel, is a species of butterfly in the family Lycaenidae endemic to Australia. It was first described in 1969 by John Kerr, Jack Macqueen, and Don Sands. It is restricted to two present localities under 10 km² in area in Southeastern Queensland, with another locality's population extirpated due to land clearing. As a result, it has been described as "Australia's rarest butterfly", with an estimated 37% chance of extinction by 2040.

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