Adults of the Australian plague locust can be readily distinguished from other species by the large dark spot on the tip of the hindwings and distinctive scarlet hindleg shanks. IMAGE: Supplied.
Landholders have been urged to be on the lookout for locust activity.
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Riverina Local Land Services suspects dormant locust eggs may form localised bands when they hatch later this month. The LLS said eggs in areas north of Narrandera and around Jerilderie were a cause for concern.
Senior biosecurity officer Toby O'Brien urged landholders to be vigilant.
Adult plague locusts usually lay eggs on compact roads next to crops, tree lines and farm buildings. Mr O'Brien said the best time to control outbreaks was when locusts begin to "band".