Who's been stockpiling hornets then?
It's a "horde" when it's lots of people. Hoard when it's sequestered assets.
The French honey industry is under threat from hordes of bee-massacring oriental hornets, the Daily Telegraph reports. The forests of Aquitaine, in south-west France, now play host to swarms of the the Asian Hornet, Vespa velutina, which is believed to have arrived there "from the Far East in a consignment of Chinese pottery in …
It's not the acidity or alkalinity of a bee/wasp sting that does the damage but the chemicals themselves in the venom that cause pain and inflammation. Odds are if you were stung in exactly the same place by a bee and then a wasp you'd just be twice as hurt. And twice as unlucky.
http://en.wikipedia.org/wiki/Apitoxin