Biosecurity alert: Tomato potato psyllid

The Department of Agriculture and Food, WA (DAFWA) is working with the WA horticulture industry to respond to the detection of tomato potato psyllid, an exotic plant pest.

Tomato potato psyllid attacks a range of plants including potato, tomato, eggplant, capsicum, chilli, and tamarillo, along with sweet potato. The weeds nightshade, ground cherry, matrimony vine and field bindweed are also hosts of the pest.

The pest has been detected in several Perth backyard vegetable crops and a commercial property north of Perth. 

Biosecurity alert for vegetable growers - check and report

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.

Industry Updates for commercial growers and industry

Industry Updates are distributed by the department to keep commercial growers and industry informed of the current situation. 

The most recent Industry Update is available here

Quarantine Area Notice

A Quarantine Area Notice has come into effect for the Perth metropolitan area to limit the spread of TPP. This will impose certain restrictions on the movement from the Quarantine Area (QA) of host plants and other materials that could spread tomato potato psyllid.

Movement restrictions will also apply to any machinery, equipment, soil or other plant growing medium used in connection with host plants.

The QA extends to include Wanneroo in the north, Serpentine-Jarrahdale in the south and Mundaring in the east.

The notice requires treatment or certification of host material and potential carriers before movement outside of this specified area. Targeted compliance inspections will be undertaken. 

Quarantine Area Notice - Frequently Asked Questions for commercial growers and industry

Frequently Asked Questions (FAQs) about the Quarantine Area Notice are now available to assist commercial growers and industry.

Please note, these FAQs will be updated regularly. The most recent FAQs are availble here: FAQs Quarantine Area Notice - tomato potato psyllid as at 23 Feb 2017.

Quarantine Area Notice map

Find out if your property is within the quarantine area by using the interactive map below.

Type your address including your street name and suburb into the search bar and click on "Go".

If you are a commercial grower located within the quarantine area refer to the quarantine area notice.

If you have a backyard vegetable patch check for signs of the psyllid and report any unusual detections using the department's MyPestGuide Reporter app. The app is available from Google Play or App Store.

Alternatively, email photos with your name, address and mobile number to or call the Pest and Disease Information Service on 1800 084 881.

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.

The psyllid is a tiny sap-sucking insect. Tomato potato psyllids go through three stages of development – adult, egg and nymph. Adults and nymphs of tomato potato psyllid cause injury to plants by feeding with sucking mouth parts.

  • Adult psyllids resemble small winged aphids in appearance about 3mm long. The body is brownish and has white or yellowish markings on the thorax and a broad white band on the abdomen. Wings are transparent and held vertically over the body.
  • Nymphs are 2mm long, oval shaped, flattened and scale-like in appearance. Young nymphs are yellowish green to orange with a pair of red eyes and three pairs of short legs. Older nymphs are greenish and fringed with hairs and have visible wing buds.
  • Psyllid eggs are less than 1mm long and are attached to the plant by a short vertical thread. They are usually laid on the lower surface of leaves or along the leaf stalk. Eggs are white when first laid then turn yellow to orange after a few hours.

The tomato potato psyllid can carry the bacterium “Candidatus Liberibacter solanacearum”, causing the ‘zebra chip’ disease in potato.

Symptoms of psyllid infestation to look for

Look for damage on the underside of leaves.
Signs of tomato potato psyllid include:

  • Insects jumping from the foliage when disturbed.
  • Severe wilting of plants caused by high numbers of psyllids feeding.
  • Yellowing of leaf margins and upward curling of the leaves caused by the injection of salivary toxins.
  • Honeydew which makes the leaves sticky and can cause severe infestations, which can lead to the development of sooty mould.
  • Shortening of stem internodes, and
  • Stem death are similar to other potato and tomato disorders.

Report the pest if you find it

If you suspect tomato potato psyllid, send a photo to the Department of Agriculture and Food, WA via the MyPestGuide Reporter app available from the Google Play or the App Store or email photos with your name, address and mobile number to Alternatively, call the Pest and Disease Information Service on 1800 084 881.

Symptoms in tomatoes

Plants may become stunted or abnormally elongated. Foliage symptoms include leaf curling and yellowing. Fruit development is uneven.

Tomatoes may be misshapen, or no fruit is produced or there is an over-production of small, noncommercial grade fruit. Symptoms vary in severity between cultivars.

Symptoms in capsicums and chillies

Parts of the plant may die back. Foliage symptoms include leaves becoming misshapen, pale green or yellow with spiky tips and leaf stalks appear stunted. Flowers may drop prematurely. Symptoms vary in severity between cultivars.

Symptoms in potatoes

Potato plants may have shortened internodes and aerial tubers may develop in the leaf nodes. Potato tops are likely to be smaller than normal. The foliage turns yellow and may have a burnt or purplish appearance. Stems may die completely but regrowth from the base may occur. Tubers from affected plants may have small stalked tubers protruding from the main tuber (called ‘chaining’) and when cut may show internal browning of the vascular ring or brownish streaks along the medullary rays. 

Below: Mature adult psyllid in comparison to 5 cent piece. Note the small size of the insect and how the wings are held vertically.

Bactericera cockerelli with 5 cent piece

Biosecurity reminder

Practice sound crop hygiene/biosecurity practices to prevent the entry, establishment and spread of pests and diseases.

  • Check the plants you purchase are free of pests and don’t bring infested plants into your property.
  • Regularly monitor your plants for any unfamiliar pests or diseases.
  • Report any suspect pests or diseases to the Department of Agriculture and Food, WA’s Pest and Disease Information Service (PaDIS) by email at or freecall 1800 084 881.
  • The Pest and Disease Information Service (PaDIS) provides advisory and identification services on animal and plant pests, weeds and diseases that impact Western Australia’s agriculture and food industries.
  • Report suspect pests or diseases via the MyPestGuide Reporter app available from the Google Play or the App Store.

Contact information

Pest and Disease Information Service (PaDIS)
1800 084 881
Page last updated: Monday, 27 February 2017 - 6:16pm