According to the fluctuation of population of Citellus dauricus and its burrow track flea index in Wuningbatu Sumu, Zhengxiangbai Banner, Inner Mongolia Autonomous Region during 1981 ～ 1993, the authors have found that there are nine flea species with Citellophilus tesquorum mongolicus (66.

According to the fluctuation of population of Cicellus dauricus and the index for body flea in Wuningbatu Sumu,Zhengxiangbai Banner, Inner Mongolia Autonomous Region during 1981 ~ 1993, the authors have found that there are ten flea species, with Citellophilus tesquorum mongolicus (72.

To determine the association between the sex, age and temperature of fleas Citellophilus tesquorum sungaris and their blood-sucking rate, engorged quantity, or digestion speed, using the logistic regression and the multiple regression methods, respectively, the results were as follows.

Nine flea species were found from the ground squirrel burrow nest,body and burrow track,among which Citellophilus tesquorum sungaris was the dominant species (89 65%) and Neopsylla bidentatiformis came the second (10 26%).

In this paper, we mainly analyse the survival data of citellophilus tesquorum sungaris (Jordan,1929), which come from Ma li-ming′s laboratory studies in 1985-1990 on four different conditions: temperature, relative humidity, frequency of blood feeding and sex.

Statespace model between Nosopsyllus laeviceps kuzenkovi and population of Meriones unguiculatus;

The morphology of third instar larva of Monopsyllus sciurorum asiaticus (6 specimens) is described (Fig 1) in this paper.