Interesting stuff, Iain, thanks. Yes, Red, Varroa is a serious problem for honey bees (CCD - Colony Collapse Disorder - is a separate issue that might (or might not) be linked to Varroa). But the issue is not solely about honeybees. There are many other species of wild bee (solitary & bumbles) that are also badly affected by neonics, unfortunately, as are other insect pollinators (as you note). I did have a brief squint, but I can't find any obvious stats that give an indication of how much pollination is done by what...