26 August 2015 EFSA reports on high toxicity of neonicotinoids spray on bees, just as for seed coating
http://www.efsa.europa.eu/en/press/news/150826
The conclusions on the toxicity of neonicotinoids on bees from the spraying of these insecticides in crops are similar to the ones published in 2013 on seed coating with neonicotinoids: either highly toxic or lack of data from the producer to be able to carry out the risk assessment properly.