1. Department of Arboriculture and Plant Protection, Perugia University, Borgo XX Giugno 74, 06121, Perugia, Italy (Phone: +39‐075‐5856032; Fax: +39‐075‐5856039, E‐mail: )
2. Department of Agricultural and Environmental Biotechnologies, Ancona University, 60131, Ancona, Italy
3. Department of Entomology, Texas A&M University, College Station, TX 77843, USA