1. The female cicada lays its eggs and dies soon after they have hatched; 2. the newborn nymphs drop to the ground; 3. the nymphs  burrow and start their underground lives using the tree roots as food source; 4. in due time the nymphs dig an exit tunnel using their strong front legs, surface and climb up the tree where they moult into a full-grown cicada; 5. by then it has reached its reproductive age and starts looking for a mating partner.