The Drosophila fly with spotted wings, Drosophila suzukii (Matsumura) is a small fly of vinegar that has been constituted as the greatest potential danger for many fruit crops. Unlike other species of the same genus, D. suzukii is characterized by its attack A FRUTA SANA, during its maturation process. The females (2-3 mm length) have a serrated ovipositor, which allows them to make incisions on the epidermis of the fruits and place the eggs inside the pulp. This causes a necrosis and entry point of microorganisms that generate the rot of the fruit, with the loss of quality of the product and uselessness for its commercialization.
Its target plants are a large number of soft-flesh fruit trees such as plums, apple trees, kiwis, figs, cherry trees or peach trees, but it also attacks other crops such as strawberries, grapes, blueberries or blackberries.
State Size Features
Larva Up to 3.5 mm Cylindrical, white and white
Adult 2-3 mm Light yellow to brown with red eyes and branch termination. The males have a black spot on the end of each of their wings and two black stripes on the first pair of legs. The female does not have these characters but presents a serrated ovipositor what differentiates it from the vinegar fly (Drosophila melanogaster).
The female realizes the putting in the interior of the fruit, hatching the eggs in three days. Larvae develop by feeding on the pulp, passing through three larval stages and then pupating (they can also do so on the ground). This species lives optimally at a temperature of 20 ° C, although temperatures above 10 ° C make it possible for adults to fly. As an adult, it has low temperatures, although in the Mediterranean climate it can be active throughout the year.
Up to 13
Symptoms / Damage
It harms the healthy fruit at the beginning of the maturation unlike the fly of the common vinegar, which does it on fallen fruit, on ripe or in poor condition.
When the fruit is freshly chopped, the symptoms go unnoticed, being examined thoroughly to observe the bite.
Practice a hole where you deposit the eggs. The larvae develop inside feeding on the pulp and there is a collapse around the feeding area of the fruit, which ends up rotting.
In warehouse it supposes an immediate destrío.
- Cultural measures
The massive trapping by placing flyers primed with apple cider vinegar has reported very good results.
The fruits fallen to the ground are more susceptible to being chopped because they contain more sugars, being an important reservoir of the pest. It is useless to carry out treatments on the tree if the fruits are not removed from the soil.