when doing an overnighter in Thailand, our guide had a hammock with rainfly and mosquito net. Hammocks are great for keeping cooler than ground sleeping, and are often lighter. i just did a search and came up with this one, but I'm sure there are many options.
http://www.mosquitohammock.com/ Don't know if equador has malaria, but keeping bugs out in rainforests is definitely a bonus, and rain too, hence the fly.
Perry