Mosquitoes were collected on autumn evenings in Ohio while they were feeding on snakeroot and goldenrod flower nectar. Females of Aedes vexans and Culex restuans were sufficiently numerous to indicate when, in the gonotrophic cycle and in the adult life span, they typically took nectar. Dissections of 444 females indicated that both species seldom fed on nectar while digesting a blood meal (3-4% were blooded). The great majority of Ae. vexans took nectar while empty (79%) (neither blooded nor gravid), whereas Cx. restuans took nectar as commonly when gravid (49%) as when empty (48%). Parous nectar feeders were common among both species. A comparison of the parous/nulliparous ratio of nectar-feeding and blood-seeking collections of Ae. vexans indicated that nectar feeding was most frequent among nulliparous females but continued through-out adulthood.
