Monitoring for Colorado Beetles is important preventive control


<div> There have been no findings of Colorado beetles in Finland this year, but there is now a great risk that they might spread with the southerly and south-easterly air flows. It is now important that the potato patches are checked by the grower as the safest way of controlling the Colorado beetles is when the populations are found as early as possible. </div>

During previous years Colorado beetles have been found in South and North Karelia, South Savo and Uusimaa. In these areas especially, it is worth checking the potato fields regularly.

In July adult Colorado beetles, egg masses and colonies of larvae may be found in the potato fields. An adult Colorado beetle is about one centimetre long. It has 10 black longitudinal stripes on its yellow back. The beetle’s semolina sized yellow eggs are in tight groups on the underneath of the leaves. The larvae are orange in colour and on both sides there are black spots in two rows.

The Colorado beetle is a harmful organism. Any findings or suspicions of Colorado beetles have to be reported to the plant protection authorities. You will find contact information for the reporting of any sightings and additional information about the Colorado beetle on Evira's Internet pages (in Finnish): The service number for the reporting of sightings is 040 801 4407 (between the hours of 9-20).

For additional information, please contact:
Senior Officer Atro Virtanen, Evira, tel. +358 20 77 25047
Senior Officer Paula Lilja, Evira, tel. +358 20 77 25043

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