Periodical cicadas emerge from underground every 13 or 17 years, depending upon which brood the cicadas belong to. The year a particular brood emerges often differs from other broods and is also dependent on geography. The periodical cicada, although unrelated, is often mistakenly called a locust.
Periodical cicadas reach approximately 1.5 inches in adulthood and are notable for their red-orange eyes. As nymphs, cicadas spend many years living in soil between 2 and 24 inches in depth. Once the cicadas reach the surface, they must find a tree or other vertical surface on which to moult and complete their metamorphosis. After shedding their skins, cicadas are adults and fully capable of flight.Learn More
According to National Geographic, locusts are similar to grasshoppers, and are strikingly similar in appearance. Cicadas are an insect that look similar to a large fly, with short bodies, broad heads, large eyes and clear wings.Full Answer >
Locusts eat plants and vegetation. When conditions are just right and there are plenty of green plants available for eating and reproducing, locusts gather into swarms that can devastate the area.Full Answer >
A large group of locusts is called a plague of locusts. Alternatively, a large group of locusts can be referred to as a locust cloud or swarm of locusts.Full Answer >
Fossil evidence dating back 550 million years identifies snail-like mollusks inhabiting the sea floor. Several million years later, snails adapted to land, breathing with lungs rather than gills. Snails now live in wide-ranging habitats from deserts to tropical climates, at sea level and in mountainous regions.Full Answer >