**1. Introduction**

*Drosophila suzukii* Matsumura (Diptera: Drosophilidae) is classified by the European and Mediterranean Plant Protection Organization (EPPO) as an emerging and invasive pest [1]. This insect is native to east and southeast Asia, although its real geographical origin is still discussed [2]. It has been introduced in several Hawaiian Islands [2], North America [3], Europe [4], and recently in Iran [5], Argentina [6], and later Chile [7], reflecting its high adaptive capacity. Its relevance is due to high economic importance because of the severity of the damage it causes in various productive crops [8–15]. It is a very polyphagous pest, with more than 50 hosts reported in literature [16].

In contrast with *Drosophila melanogaster*, the spotted wing fruit fly develops in mature and undamaged fruits, injecting its eggs into fruits when they preferably

begin to turn color [17]. The larvae develop inside the fruits, finally pupating on or inside them [15, 17]. If there is not enough healthy fruit, it can also attack fallen or damaged fruit [18].

Since only 2 years ago its presence was reported in Chile, until now there was no corroboration of its productive impact in the country. At the same time, for the design of the management proposals, there was only external literature; however, the objective of this work was to monitor the economic damage caused by the plague in cherry and blueberry orchards and also evaluate the control achieved with insecticides of different chemical groups: alpha-cypermethrin, acetamiprid, chlorantraniliprole, cyantraniliprole, emamectin benzoate, lambda- and gammacyhalothrin, spinetoram, and spinosad.

The possible repellent effect of garlic and chili-based products, as well as an extract of *Chenopodium ambrosioides*, was also investigated*.*
