EFSA Admits Bt Maize Threat to Butterflies and Gives Green Light Regardless
The European Food Safety Authority GMO Panel’s new opinion on Pioneer Hybrid/Mycogen Seed’s insect resistance GM maize (known as 1507) acknowledges the crop puts non-target species at risk, including iconic butterflies, but disregards both these risks and big gaps in the applicant’s data in recommending the crop for EU cultivation. 
In contrast to a 2005 opinion giving 1507 the all clear, the EFSA GMO Panel now says, “Highly sensitive non-target Lepidoptera populations might be at risk,” if they ingest pollen from the GM maize that falls on plants used by their larvae for food.
Many common and iconic butterflies could be harmed because their food plants are frequently found in and around arable fields, so their larva may consume 1507 pollen on these plants. The “at risk” list includes the Painted Lady, Peacock, Small Tortoiseshell, Common Blue and Orange Tip.