Leafhopper feeding behaviour on three grapevine cultivars with different susceptibilities to Flavescence dorée

•Scaphoideus titanus feeding behavior on three grapevine varieties was described with EPG.•A longer duration of phloem ingestion was recorded on Barbera cv. compared to Brachetto and Moscato.•No major differences were identified in the phases outside the phloem among the three varieties.•Barbera is a more suitable host-plant for the leafhopper compared to Brachetto and Moscato.•The differences in feeding behavior may explain the different susceptibilities to Flavescence dorée.