Pest survey card on Bactrocera zonata.
This pest survey card was prepared in the context of the EFSA mandate on plant pest surveillance (M-2020-0114), at the request of the European Commission. Its purpose is to guide the Member States in preparing data and information for Bactrocera zonata surveys. These are required to design statistically sound and risk-based pest surveys, in line with current international standards. Bactrocera zonata is a clearly defined taxonomic entity. Imports of fruits of Prunus species and several other hosts are currently subject to specific measures aiming to prevent entry of non-European Tephritidae. Nevertheless, the most likely introduction of B. zonata would be via transport of infested fruit followed by gradual natural spread. Bactrocera zonata is currently absent from the EU and surveys would therefore be aimed at substantiating pest freedom. Adult trapping is the preferred survey method for the detection of B. zonata. The preferred timing for surveillance is during the summer months when abundant fruits are available from the main host plants. Bactrocera zonata is a polyphagous species that has currently been reported to attack over 50 cultivated and wild plant species. The primary host for detection surveys in the EU would be cultivated peaches and nectarines, whereas other host species should be included in case of delimiting surveys. Bactrocera zonata is expected to be able to establish in the southern part of the EU. Identification of B. zonataat the species level requires morphological examination of adults and molecular protocols are available.