Hot answers tagged insects
According to WHO reports, there are a substantial number of Malaria cases in Peru and Panama, and Costa Rica suffers from Dengue fever so it would seem advisable to be careful there. I don't think there are diseases spread by mosquitoes in Patagonia, but they can be very annoying nonetheless.
We were up at Chichibu last weekend, and they were selling the Giant Sparrow Bees in a baby food jar in some kind of syrup and were told by the vendor that the stingers are removed and that the bees are Eaten after drinking the syrup. She demonstrated for us. They are supposedly food for building muscle and considered a delicacy
There is plenty of information on venomous snakes, spiders, scorpions, etc on the web, just search with more specifics, ie: poisonous snakes in Arizona, scorpions in Utah, etc. If you are simply exploring the parks as a tourist, walking the marked trails, visiting overlooks, etc, you need not worry too much about it. Most smaller animals will avoid us same ...
Also, when camping overnight in Yosemite, Sequoia & Kings Canyon you are REQUIRED bear bag for food or even bear can: http://en.wikipedia.org/wiki/Bear-resistant_food_storage_container and having a bear spray might be a good precaution.
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