1. School of Biosciences and Veterinary Medicine, University of Camerino, Camerino, Italy.
2. Medical Entomology Lab/IFAS Vero Beach, University of Florida, Vero Beach, Florida.
3. Emerging Pathogens Institute Gainesville, University of Florida, Gainesville, Florida.
4. Department of Biosciences, University of Milan, Milan, Italy.
5. Department of Veterinary Medicine and Animal Production, University of Naples, Naples, Italy.