Moringa horned treehopper "Leptocentrus moringae," photographed in Tamil Nadu, India. (Flickr photo by arian.suresh) When a mosquito lands and begins to feed, the saliva it deposits in the skin stops ...

Why the treehopper developed the enlarged, three-dimensional hood ornament that distinguishes it from the rest of the insect world remains a mystery to scientists, though it's theorized that mimicry ...