A survey of the mosquitos (Diptera: Culicidae) of Napsan, Palawan, Republic of the Philippines.

Mosquitos were collected in three villages on the western coast of the island of Palawan, Republic of the Philippines, from June 1986 to April 1987, using 3 methods. Anopheles flavirostris, the primary malaria vector, was the most abundant of the Anopheles collected biting man, ranging from a low of 83.9% in June (16.1 collected/man/night) to 98.3% in April (29.1 collected/man/night). The number of species was greatest in the animal-baited traps with 54 species detected. The CO2-baited CDC light traps were neither effective nor economically feasible as a monitoring tool for malaria vectors at this site. People were at risk from An. flavirostris bites throughout the night except 1800-2000 which are low-risk hours. Anopheles flavirostris is slightly exophagic during most of the year, but moderately endophagic during the hot, dry season.