Ewartia oldfieldi is a species of cicada, also known as the broad-striped wattle cicada, in the true cicada family, Cicadettinae subfamily and Cicadettini tribe. It is endemic to Australia. It was described in 1883 by English entomologist William Lucas Distant.
The length of the forewing is 20âÂÂ26 mm.
The species occurs in south-eastern Queensland from the Tropic of Capricorn southwards to the New South Wales border. Its associated habitat is low shrubland and open forest with wattles.
Adults are heard from September to April, clinging to the outer stems and upper branches of wattles, uttering repetitive, lilting calls.