Simple SummaryThe citrus fruit borer has become one of the main pests in citrus orchards in Brazil, possibly due to biological imbalances caused by multiple insecticide applications. This pest is managed with insecticides, but studies indicate a potential use ofTrichogramma atopoviriliato control its eggs. In this way, we evaluated the selectivity of new products that could eventually be used in the Brazilian citrus orchards onT. atopovirilia. Among the products tested, spinetoram was considered harmful. Cyantraniliprole, cyantraniliprole + abamectin, abamectin, sulfoxaflor, and the entomopathogenic fungiCordyceps fumosoroseawere considered selective and non-persistent to the parasitoid.AbstractIn Brazil, the citrus fruit borer,Gymnandrosoma aurantianumLima, 1927, is a serious pest in orange orchards, causing an annual loss of 80 million US dollars, and is managed with multiple insecticide applications, often 56 in a single season. On the other hand, the parasitoid waspTrichogramma atopoviriliaOatman & Platner, 1983 has the potential for controllingG. aurantianumby attacking its eggs. Considering the intensive insecticide applications in citrus orchards in Brazil to control the large complex of pests, especiallyDiaphorina citriKuwayama, 1908, evaluation of the harmful effects of insecticides onT. atopoviriliais important to maximize efficiency in managingG. aurantianum. Here, we tested the effects of new products used in citrus orchards (cyantraniliprole, cyantraniliprole + abamectin, abamectin, sulfoxaflor, spinetoram, flupyradifure, andCordyceps fumosorosea(Wize) Kepler, B. Shrestha & Spatafora) on adults and pupae ofT. atopovirilia. Of the insecticides tested, spinetoram caused the highest impacts onT. atopoviriliaparasitism, longevity, emergence, and mortality. The other products caused more sublethal than lethal effects and were classified as 1 and/or 2 in the IOBC/WPRS classification. Abamectin, cyantraniliprole, cyantraniliprole + abamectin, and the entomopathogenic fungusC. fumosoroseawere classified as short-lived. Except for spinetoram, these products were classified as selective. In this study, spinetoram was considered harmful toT. atopoviriliaand, therefore, should be managed carefully in IPM programs combining this parasitoid. In order to safely use this insecticide, one should respect the interval of release of the parasitoid, which is 21 days after its spraying. The novel products tested, cyantraniliprole, cyantraniliprole + abamectin, abamectin, sulfoxaflor, and the entomopathogenic fungiC. fumosoroseawere selective and non-persistent toT. atopovirilia. These products are possible replacements for non-selective insecticides to achieve higher control from both chemical and biological tools.