Thanks for your question.

Cicadas progress through three stages: egg, nymph, and adult. The nymphs have an exterior covering called an exoskeleton. As a nymph grows, it emerges from its earlier exoskeleton and then grows a larger exoskeleton. Your picture shows an adult cicada just after it has emerged from its last nymph exoskeleton. See:

https://askabiologist.asu.edu/cicada-life-cycle - :~:text=Early Cicada Life Stages&text=A nymph is a baby,where they get their food.

Thanks for consulting with us.