Tomato potato psyllid attacks a range of plants including potato, tomato, eggplant, capsicum, chilli and tamarillo, along with sweet potato.
DAFWA is undertaking surveillance of the pest, and requests commercial vegetable producers and backyard growers to check for signs of the psyllid and report any unusual detections through the MyPestGuide Reporter app.
The department has quarantined the impacted properties to restrict the movement of vegetable and plant material off these properties.
This is the first time the psyllid has been detected in Australia. This insect pest is a significant production pest in other countries where it is present, including the USA, Central America and New Zealand.
What is a psyllid?
Tomato potato psyllid (Bactericera cockerelli) is an exotic plant pest which feeds on tomato, potato, capsicum, chilli and solanaceous weeds like nightshade, as well as sweet potato, leading to loss of plant vigour and yield.