I am considering going to Central and South America during April - June. I don't know how far into the jungles I will be going, but I certainly won't be going to the Amazon this time around. Is it necessary to have insect repellant clothing or mosquito net clothing for places such as Costa Rica, Machu Picchu, Patagonia, and Panama?
Don't worry for Patagonia: There are very few insects without any diseases. Peru in the high areas (Machu Picchu, Cuzco) is safe as well. For Central America, why not. Many carry one & don't use it. Some use it often... If you bring one, get a light one!