Adult populations of nuisance chironomid midges were collected daily over a 2-year period by using New Jersey light traps at five waterfront locations of a city bordering the southern shore of Lake Monroe in central Florida. Species of Chironominae,Glyptotendipes paripesEdwards,Chironomus crassicaudatusMalloch,Chironomus decorusJohannsen, and Tanypodinae spp. (mostlyCoelotanypus scapularis(Loew),Coelotanypus concinnus(Coq.), andProcladius subletteiRoback) were the most abundant midges. The 2-year maximum nightly catch of these midges taken in active traps amounted to 184,133, 134,233, 3,990, and 16,191 adults, respectively. Partitioning of the total sum-of-squares in an analysis of variance indicated that catches were relatively homogeneous over the trap locations. Time of year (date) and differences in phenology among the studied species of Chironominae and subfamily Tanypodinae were the factors contributing the greatest amount to the variation in trap catches. Autocorrelation analysis identified a weak periodicity in catches of ca. 600 degree-days above 0°C, which may correspond to the developmental time for a generation of the predominant species.