Abstract Several morphologically similar species of picture-winged flies (the silk fly complex, Diptera: Ulidiidae) are severe primary pests of sweet corn (Zea mays L.; Poaceae) in Florida. Monitoring traps for these pests may aid threshold development and species complex determination in the field. This study evaluated floral lures, some previously used to monitor pest Lepidoptera, and liquid protein baits, used for other pest Diptera, for efficacy in attraction of silk flies. Baited universal moth traps were deployed for several weeks and placed in a summer fallow field (field trial 1), a fall sweet corn field (field trial 2), and a spring sweet corn field (field trial 3). Flies were removed weekly during each experiment. In field trial 1, traps baited with 1,4-dimethoxybenzene captured the most flies. The majority of flies captured were Chaetopsis massyla Walker. In field trial 2, aged torula yeast—baited traps captured more flies than other treatments, (1,4-dimethoxybenzene, geraniol, phenylacetaldehy...