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These flies are most common during the spring. The males form mating swarms to attract females. They occasionally nectar at wildflowers, shrubs, and small trees that bloom during the spring, sometimes in large numbers, and can be considered minor pollinators of these plants.
See: Abbreviations for Insect Activities, Abbreviations for Scientific Observers, References for behavioral observations
See: Abbreviations for Insect Activities, Abbreviations for Scientific Observers, References for behavioral observations
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Supplier: Insect Visitors of Illinois Wildflowers
