At the end of the Paleozoic era were carried Meganevra insects like dragonflies with wingspans of 75 cm or merostomes of up to 2 meters. But in this era of giant insects can be found. Rhinoceros beetle - the largest and heaviest species of cockroaches: length is 12 cm, weight - 30 grams. One of the types of domestic exotic insects. Lumberjack-titanium - the largest known species of beetles. A resident of the Amazon rainforest. Its huge jaws can even eat a pencil. Despite its size (17 cm in length), the beetle is even able to fly. Dynastes neptunus - one of the largest beetles in the world. A characteristic feature of the beetle four horns two large top and bottom and short sides.Length beetle with horns can reach 15 cm A giant stick insect - the longest beetle on the planet, the length of which can reach 33 centimeters in length. In the case of protection may emit pungent-smelling odor. However, the form is harmless to humans, and some even keep them as pets. Goliath beetle - also are among the most serious bugs in the world - can weigh up to 80 grams. Their size is not too small - up to 11 cm in length.Priemuschestvenno live in trees and eat fruit juice. Can fly. Water bug - it's the only predatory beetle in our rating. Water bug lives in many water bodies of the earth. For the man is dangerous because it can leave a painful sting. In Thailand, this species is considered a local delicacy. Hercules beetle - the largest member of the genus Dynastes. Considered to be one of the largest beetles in the world. Has the longest horns of beetles. Can grow up to 15 cm in length. Females have no horns.