PRELIMINARY-OBSERVATIONS ON THE CHANGING ROLES OF MALARIA VECTORS IN SOUTHERN BELIZE

A survey for larval and adult Anopheles mosquitoes was conducted in To ledo District of southern Belize during August-September 1992. We surv eyed for larvae in 145 habitats and conducted paired indoor-outdoor co llections of adult mosquitoes landing on humans at 6 houses. In 1940-4 1, Kumm and Ram reported Anopheles darlingi females to be the most com mon Anopheles mosquitoes inside houses and reported no specimens of An opheles vestitipennis in southern Belize. In our 1992 survey we found no An. darlingi mosquitoes either as adults or larvae. More An. vestit ipennis females were captured indoors than outdoors, whereas most Anop heles albimanus and Anopheles apicimacula females were captured outdoo rs. All 3 species were represented occasionally in 145 collections of larvae from diverse habitats. Anopheles vestitipennis now appears to b e a potentially important vector of malaria during the wet season in T oledo District.