1 Entomology Department, Faculty of Science, Ain Shams University, Abbassia, Cairo 11566, Egypt.
2 Francis Schaffner Consultancy, Riehen, Switzerland; National Centre for Vector Entomology, Institute of Parasitology, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland.
3 Entomology Department, Faculty of Science, Ain Shams University, Abbassia, Cairo 11566, Egypt. Electronic address: samy@sci.asu.edu.eg.