There are also species that are parasites or parasitoids. Some other species are predators or predators for other invertebrates. Many species of predatory beetle are important as agricultural pest control. For example, beetles in the Coccinellidae family that prey on aphids, scaly insects, thrips, and other plant-sucking insects that can cause crop damage.
not all types of beetles are safe for humans and not dangerous to humans, many types of beetles emit chemical fluids when they feel threatened. from various types of beetles, chemical liquids contained in the body was also different, there is a discharge semacama pungent smell and there are also liquids that contain acid that can burn and make our skin blister.