Table 1. Representative data set obtained from H. vitripennis probing sessions. Field-collected H. vitripennis were confined to X. fastidiosa-infected grapevines for an acquisition access period of 48 h., transferred to either grapevines or citrus for 48 hours and then starved for 1 hour prior to their transfer into a sterile 1.5 μl microcentrifuge tube. Table details whether a sharpshooter was X. f. piercei-infected (+/−), type of post-acquisition plant host (grapevines or citrus), probing session (whether it was +/− or none = no successful probing session) and X. f. piercei titers estimated from each individual sharpshooter. Xylella fastidiosa detection and titer quantification was conducted by real-time PCR.