The adults are attracted to the smell of a host crop and fly upwind toward the smell. Populations decline the further away susceptible crops are from the previous overwintering host crop.įlies probably travel less than 1,000 yards in search of egg-laying sites. Since carrot rust flies are relatively weak flyers, populations tend to be localized. With a bit of experience, the combination of these features makes it relatively easy to distinguish carrot flies from the other species trapped.Ĭurrently available pesticides are unlikely to provide acceptable control of large populations, so cultural methods for managing local populations are important for organic and conventional growers alike. They have clear wings, a shiny black thorax and abdomen with few hairs, an orange head with dark red eyes and translucent orange legs. Figure 3 shows an adult carrot fly on a trap. The sticky traps are not specific to carrot flies, and there are some nonpest flies that have a similar appearance. Currently available pesticides are unlikely to provide acceptable control of large populations, so cultural methods for managing local populations are important for organic and conventional growers alike.
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