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Swede Midge

Swede Midge. Natural History. The S wede perch is an invasive agricultural species Was believed to be introduced through Canada Is indistinguishable from other midges Larva complete development in 7-21 days After this they drop to the soil and adult emerge two weeks later. Native .

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Swede Midge

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  1. Swede Midge

  2. Natural History • TheSwede perch is an invasive agricultural species • Was believed to be introduced through Canada • Is indistinguishable from other midges • Larva complete development in 7-21 days • After this they drop to the soil and adult emerge two weeks later

  3. Native • Native to Europe and south western asia • Found in turkey and spread through eastern Europe

  4. When it arrived here • Was non intentional • Was found in 1996 • Was found on a piece of brocli in Ontario • The adults are very weak fliers so they are transported through the movement of soil

  5. impact • The feeding of the larva damages the leafs • This leaves the leafs crumpled and swollen with brown scaring • Destruction of crops

  6. Control/ prevention • Insecticides can be used, but they will also enter the plant tissue • The best method of control currently is to stop the spread of the species • Another method is crop rotation • Also the non use of non-cruciferous plants

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