[Phenology of sandflies of the subspecies Paraphlebotomus inhabiting the burrow of the great gerbil in the Karshi Steppe].

Oberservations were conducted (1960 to 1973) on the sand flies of the subgenus Paraphlebotomus inhabiting the burrows of Rhombomys opimus in the Karshinskaya steppe (Uzbekistan). Ph. mongolensis is most abundant in oasis, Ph. caucasicus--in loess low-mountain areas. Throughout the territory investigated Ph. mongolensis has two generations per season. The emergence of imago of this species in oasis begins early in May with the first peak of abundance at the end of May--beginning of June and with the second peak in the first decade of August. The flight of Ph. mongolensis ceases in general to the middle of September. In the northern part of the territory investigated Ph. caucasicus has two mass generations with peaks in the second decade of June--first-second decade of August. In the southern part of the territory three peaks of abundance of ph. caucasicus were noted: in the middle of May, end of June--beginning of July and the end of August--beginning of September. Therefore, the presence of three generations per season can be suggested here.