|The most important natural enemies of the beetles are pathogens (viruses, bacteria, protozoa, fungi), parasites (Ichneumon wasps, tachina flies, Acarina) and enemies like birds, hedgehogs, shrews, bats, reptiles, spiders, fish, amphibians and even other species of beetle which feed on them. |
Beetles are often divided by humans into two groups: those that are harmful and those that are beneficial. Sitophilus oryzae and wheat weevil can cause significant damage to cereal stocks, while the Colorado potato beetle, Meligethes aeneus and Western corn rootworm are able to destroy entire harvests. Furthermore Bark beetles, Ips typographus, the Old-house borer and Mountain pine beetles destroy wooden structures, forests and woods. The Asian ladybird is among those considered useful, as it is the enemy of many pests in agriculture and forestry.