The Problem

Fruit Fly

Order: Diptera: Family: Tephritidae Qld. Fruit Fly: Dacus tryoni

What are Fruit Flies?

Fruit flies are small flies with a reddish-brown body, red eyes and yellow markings on
the body. Fruit flies are attracted to ripening and fermented fruits and vegetables. Fruit can be stung when
they are just changing colour or later. The adult fly lays the eggs just under the fruit outer surface. When the
larvae hatch, they tunnel into the fruit centre and their feeding causes the fruit to rot. At this point, chemical
control is less effective. Numbers of fruit fly build up in warm moist weather, for example, wet summers and
autumns. Fruit fly attacks a large range of host plants which include avocados, bananas, citrus, stonefruit,
passionfruit, tomatoes and capsicums. For control, spray plants well before the fruit changes colour. The
protein and sugar based bait attracts the fruit fly and kills them when they ingest the bait. Infected fruits
need to be removed, placed in plastic bags and disposed of in council waste.

What are the symptoms?

Sting marks may show up as yellow spots or oozing gum. Larvae (which look like maggots) can also be found in fruit.

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