Recently, the number of alien arthropods found in the Mediterranean basin has increased considerably. This phenomenon occurred especially in the milder climate areas of the southern sector. In this context, citrus and olive groves see their productions and even their existence at risk. In the last three decades, the increased number of allochthonous species introduced to Italy and potentially harmful to Citrus and Olea genera has alerted and worried farmers, especially for those species capable of transmitting diseases for which no phytosanitary remedies are yet known. The adoption of an integrated supra-regional surveillance and monitoring system is therefore essential. Here the focus is on some invasive alien insect species (phytophagous and predators) recently reported on the Italian territory on Citrus and Olea plant species.