Аннотация
Common features and interregional differences in the structure of the flea fauna from Moiynkum (Chu-Talas watershed), Eastern Kyzyl Kum and Betpak Dala are described. The main role of the fleas Xenopsylla gerbilli minax (Moiynkum and Betpak Dala) and X. gerbilli caspica (Eastern Kyzyl Kum) in the transmission of plague microbes is demonstrated. The long-term dynamics of these species population in different desert regions were studied. The main factors responsible for this dynamics are demonstrated.