Check out this amazing image of am urodid moth cocoon. According to entomologist and Amazon explorer Phil Torres, It has a really beautiful woven lattice structure that hangs about a foot below a leaf on a thin silk string.
This is an unusual structure because the pupa, resting inside the cocoon, seems fairly exposed to the elements. The hanging likely helps to prevent predation from ants, and the bright orange color may serve as an aposematic signal to predators to prevent it from getting eaten. The tube part at the bottom is the 'escape hatch' from which it eventually will exit as an adult moth. There is not a lot of research that has been done on the evolutionary origin structure - this is one of the many mysteries of the Amazon you can come across.
