As I understand it, the largest consensus around probable cause for that decrease has to do with neonicotinoid pesticides, which both bioaccumulate and also aff

As I understand it, the largest consensus around probable cause for that decrease has to do with neonicotinoid pesticides, which both bioaccumulate and also affect many more species than their intended targets. I don't actually know whether larvae of a brood that's been underground for over a decade would be more or less likely to be exposed to concentrations significant enough to do harm.