Which is the biggest insect?

The Goliath beetle. At over 4 inches (10 cm) long, this insect is the size of a computer mouse! Also, it weighs nearly 1/4 pound (100 g). This makes it the heaviest insect as well. Another big insect is the Atlas moth. It has a wingspan of 12 inches (30 cm) from tip to tip. About 1 foot (30 cm) in length, the tropical walkingstick is the longest insect on record. If you include its legs, the insect measures 20 inches (51 cm). This stick insect lives in the rain forests of Borneo.