The response of adult mosquitoes to 4 light-emitting diode (LED) wavelengths was evaluated using diode-equipped sticky cards (DESCs) and diode-equipped resting boxes at 2 sites in north central Florida. Wavelengths evaluated were blue (470 nm), green (502 nm), red (660 nm), and infrared (IR) (860 nm). When trapping with DESCs, 15 mosquito species from 7 genera (Aedes, Anopheles, Coquillettidia, Culex, Mansonia, Psorophora, and Uranotaenia) were captured. Overall, approximately 43.8% of all mosquitoes were trapped on DESCs fitted with green LEDs. Significantly more females of Aedes infirmatus, Aedes vexans, and Culex nigripalpus were captured on DESCs fitted with blue LEDs compared with red or IR LEDs. DESCs with blue LEDs captured significantly more Culex erraticus females than those with IR LEDs. Using resting boxes, 12 species from 5 genera (Anopheles, Coquillettidia, Culex, Mansonia, and Uranotaenia) were collected. Resting boxes without LEDs captured 1,585 mosquitoes (22.2% of total). The fewest number of mosquitoes (16.7%) were collected from boxes affixed with the blue LEDs. Significantly more Anopheles quadrimaculatus females were aspirated from resting boxes fitted with red and IR LEDs than from those with blue or green LEDs, or from the unlit control. Blood-fed mosquitoes were recovered in highest numbers from unlit resting boxes, followed by resting boxes fitted with green, IR, and blue LEDs. Culex erraticus accounted for the majority of blood-fed mosquitoes followed by Coquillettidia perturbans. No blood-fed mosquitoes were recovered from resting boxes fitted with red LEDs.
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Vol. 25 • No. 3