Stink bug (Pentatomoidea) is the largest superfamily in the order Hemiptera, simply the family Pentatomidae comtains about 5,000 species, including both carnivorous and herbivorous insects. They are famous "odor experts" with their scent glands, which are located between the back of the abdomen of the larvae, and then transferred to the anterior side of the chest after becoming adults. When they are in danger, they secrete smelly fluid for self-defense and escape.