There's actually a few insects that can cause a reation like this. If it happens to your kitty, you should call the vet and ask about a hystamine blocker to help the swelling and talk to them to get early warning signs of a serious problem.
Thanks Hissy! I was wondering the dangers of spiders, bees, and other insects to cats. There are many spiders downstairs and want to get rid of them because Rascal wants to chase them and eat them.