Oh, yes. We're in one of the most biodiverse regions of the world, and that includes all sorts of wasps, ants, spiders, snakes, and land crabs, and more. You need to exercise reasonable caution when hiking in the region, and wear long hiking pants and even boots. If you have a known allergy to stings (bees, wasps, etc) physicians recommend that you always travel with a dose of epinephrine.
Interestingly, one of the most dangerous critters to come into contact with here is a type of caterpillar (Lonomia).