Dry-ice (CO2) baited EVS (Encephalitis Virus Surveillance) light traps collected significantly more Culex annulirostris than unbaited EVS or CDC light traps, chicken-, guinea pig- and rabbit-baited EVS traps, or cubic foot resting boxes. Results from the animal-baited traps indicated a preference for bird versus mammal bait. Females sampled by the resting boxes had significantly lower parity rates than females sampled by dry-ice baited EVS traps. Parity rates were generally similar among females sampled by dry-ice baited EVS traps, unbaited CDC light traps and animal baited EVS light traps.