How can I control the Mediterranean fruit fly?

Author: نسرین خانزادی
February 2, 2026

Articles

For several years, the quarantine pest Mediterranean fruit fly (Ceratitis capitata) has been increasing in the country, causing concern for many farmers. Farmers frequently ask us about the best methods and timing for controlling the Mediterranean fruit fly. Some farmers have even tried using diesel fuel to eliminate it, but this method did not produce good results. This is because controlling the Mediterranean fruit fly requires a thorough understanding of its life stages, generations, and reproduction. In the following article, we examine this issue in more detail.

Mediterranean Fruit Fly Pest

The fruit fly is one of the most important pests of fruit orchards in temperate regions, attacking crops such as apples, pears, peaches, apricots, persimmons, citrus, and tomatoes, causing significant damage. It is a multivoltine pest, reproducing multiple times throughout the year. The Mediterranean fruit fly is native to tropical and subtropical regions of Africa and, until a few years ago, was considered a quarantine pest in our country.

Morphological characteristics:

The adult fly is 4–5 mm long and yellow or black in color. It has a large yellow head with a light brown stripe, red compound eyes, a yellow and black thorax with fine hairs, and transparent wings with distinct stripes. We have included a photo of the Mediterranean fruit fly for your reference.

Eggs: The eggs resemble rice grains; they are white and elongated.
Larvae: The larvae are white, curved, and spindle-shaped.
Pupae: The pupae are oval, brown, and 4–5 mm long.

Life cycle of the Mediterranean fruit fly pest

The adult insect lays its eggs in clusters of 5 to 15 under the skin of fruits. The area where the eggs are laid initially becomes pale and then turns brown. After hatching, the larvae begin feeding on the fruit tissue. After 9 to 50 days and three molts, the larvae leave the fruit by jumping out, burrow up to 10 cm into the soil, and pupate there. Under suitable environmental conditions, this pest can produce up to 12 generations per year. In cities such as Mazandaran, Tehran, and Alborz, it has 5 to 6 generations and damages fruits such as oranges, mandarins, peaches, nectarines, figs, and persimmons.

Damage Caused by the Mediterranean Fruit Fly
The adult fruit fly can live 6 to 8 months under favorable conditions. During the larval stage, it feeds on the fruit flesh. The punctures caused by egg-laying in the fruit skin provide ideal sites for fungal and bacterial growth, leading to fruit rot. Damaged fruits usually fall to the ground and are lost.

Management and Control of the Mediterranean Fruit Fly

Controlling the Mediterranean fruit fly is very difficult because it reproduces for much of the year and spends the winter deep in the soil. In recent years, farmers have tried various methods, such as using diesel fuel, to combat the Mediterranean fruit fly, but these methods have not been effective. Effective control requires careful attention to the insect’s life cycle and reproduction. First, infested orchards should be identified by installing attractant traps or sticky yellow traps.

Mechanical Control Method for Fruit Flies
In this method, all infested and fallen fruits under the trees and on branches should be collected, buried 50 cm deep in the soil, and covered with lime. At the end of winter, turn over the soil around the trees and perform shallow plowing. This simple practice of removing fruit residues can prevent a significant portion of the damage in subsequent years.

Chemical method in controlling Mediterranean flies

What is the best pesticide for fruit flies?
In case of severe infestation, bait should be sprayed on the trunks of trees using 20 to 30 parts per thousand protein hydrolysate along with a poison such as malathion. Usually, bait is not sprayed on all trees, except for one and two rows of trees on the southeast and southwest sides of the garden.The best time to combat the Mediterranean fly is usually from mid to late winter by installing attractant traps, which should be continued until September, and as the number of flies in the traps increases, the number of traps containing protein hydrolysate and malathion poison should be increased. Also, bait should be sprayed on the trees two to three times.The best way to combat the Mediterranean fly is not to take one action, but to take all of the above measures.

Attractant traps
One of the effective ways to control this pest is to use various types of traps with pheromone attractants or containing toxins. The yellow sticky trap, which is a sticky yellow plate and attracts the insect due to the substances it contains.This method can also be used to obtain the population rate of Mediterranean flies.

McPhail Trap 
This trap, which contains the substance ceratrope, attracts mostly female insects.

McPhail Pheromone Trap 
This type of trap is charged with a substance called Trimedlure and attracts male flies.

How to place traps: Traps are installed at a height of 150 to 180 cm from the ground and on the southern side towards the inside of the tree.

How to make a Mediterranean fly trap

In situations where you, dear ones, do not have the opportunity to obtain ready-made traps such as MacPhail or bucket traps, just look at the photo of one of these traps and make the trap you need.To make a Mediterranean fly trap, you will need an empty 1.5 liter soda bottle, a piece of wire, and a knife. The bottom third of the bottle is where you will pour the poison solution. Just above this, make two or three holes with a diameter of 3 cm and hang the top of the bottle from a tree with a wire.

Conclusion

This article provides information on ways to combat Mediterranean flies or fruit flies, the best time and best method to combat fruit flies, how to make a Mediterranean fly trap, and the amount of poison required in a Mediterranean fly trap, as well as useful tips and information needed by farmers.