Another aspect, beyond potential differences in pesticides or pesticide application methods might be Air pollution. Europe has very small footprint compared to

Another aspect, beyond potential differences in pesticides or pesticide application methods might be Air pollution. Europe has very small footprint compared to the US but proportionally a very high PM2.5 particle concentration and NO2 concentrations (specially Northern Europe) in particular around major port trading hubs and petro-chemical facilities, the market share of Diesel engines in Europe is also a major NO2 contributor. The US is heavily industrialized but sites are actually much more spread out and most of the pollution above recommended levels is concentrated on the East coast of the US. If the air pollution aspect is a factor in insect population than it would follow that we would see huge insect population losses in large parts of China and Southeast Asia but I don't have data that supports or denies this?