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Summary Leaf miners from the family of Agromyzidae commonly occur in cereal crops on the territory of the whole country. However, their harmfulness is not considered as very high, and only locally they can cause losses of economic importance. Feeding larvae damage leaves of winter wheat and barley reducing the yield parameters. Monitoring of cereal leaf miners flight in winter wheat crops was carried out in Wielkopolska district in 2009/2010 and 2010/2011 in Slupia Wielka. Yellow traps were placed above the top of wheat plants during the vegetation period. The traps were replaced once a week. Fluctuations in weather conditions during the studies affected the dynamics of leaf miner flies considerably. The most common species were: Chromatomyia nigra (Mg.), Ch. fuscula (Ztt.) and Poemyza superciliosa (Ztt.). At the same time observations were carried out to determine the harmfulness of leaf miners and leaves with visible presence of larvae or pupa stage in leaf tissue were collected. In laboratory conditions, the culturing was carried out in order to determine the species of leaf miner.

Occurrence, harmfulness and dynamic of cereal leaf miners (Agromyzidae) flight on winter wheat in Wielkopolska region