Investigation on malaria vectors and mosquito fauna in south Tripura district, Tripura state.

In an entomological study in South Tripura district of Tripura state during June 1998, a total of 31 species of mosquitoes belonging to eight genera were recorded. Among the known malaria vectors in India, Anopheles annularis, An. jeyporiensis, An. minimus, An. philippinensis/nivipes and An. varuna were collected but none of them could be incriminated. During the survey, Aedes pallidostriatus and Malaya genurostris were recorded for the first time in the north-eastern region and Tripura state respectively. Presence of host seeking An. minimus in light-trap collections indoors and its absence during morning indoor resting collections indicated the probability of some degree of exophilic behaviour of An. minimus population in Tripura.