A DEVICE FOR MONITORING POPULATIONS OF LARVAL MOSQUITOS IN CONTAINER HABITATS

A device was developed for repetitive sampling of mosquito larvae with out undue disruption of the larval habitat. The sampler is a 3-oz. (ca . 100-ml capacity) transparent plastic cup with a hole in the center o f its convex bottom. The device is buoyed by corks so that the water l evel is 15 mm above the bottom rim of the cup and 5 mm above the hole. There was significant correlation between 24-h samples of Aedes albop ictus and Culex quinquefasciatus 4th-instar larvae in the larval sampl ing device and populations in tires. Greater numbers of immature mosqu itoes were found per unit surface area of the sampling device than the tire as a whole, demonstrating that immature mosquitoes were trapped by the sampler.