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Some aspects of the bionomics of Culex quinquefasciatus (Diptera: Culicidae) in Rajahmundry town, Andhra Pradesh.

From January 1991 to December 1992 the adult and immature populations of Culex quinquefasciatus were monitored in selected localities of Rajahmundry town. The larval density per dip ranged from 1.1 in September to 25.3 in October and the pupal density from 1.2 to 8.4 in October. Two high peaks of adult density in a year were observed during the study. Infective mosquitoes were recorded only in November 1991 and August 1992. Cx. quinquefasciatus landing on human bait was maximum between 2200 to 2400 hours and they preferred to land on body site followed by legs, hands and face in that order. The anthropophilic index was 79.5 per cent. Ratio of Female: Male mosquitoes was 5:1.