Abstract

Studies on some aspect of the bionomics of a malaria and filariasis vector Anopheles subpictus Grassi were carried out in Tanjung Bunga Subdistrict, Eas Florest, Nusa Tenggara Timur. An. subpictus in Tanjung Bunga subdistrict was found all over the year, two peak densities periods were found, one in April-June and other in November-January. This species is active nocturnally and feeds indoor as well as outdoor from 19.00-05.00 and a peak of biting activity around 20.00-22.00 and 01.00-03.00. During day time this species was found in high numbers resting indoor (55.3%) compared to low number (44.7%) resting outdoor. Abdominal conditions of mosquitoes resting indoor 53.3% were engorged, 8,5% gravids and 37.8% unfed Larvae of An. subpictus were found in brackish as well as fresh water and in clear as well as turbid water, covered by green algae or decaying leaves. Mosquito dissections reveal an infective rate of 1,42% (2/141) q/*Wuchereria bancrofti and no sporozoites at all.