Cicadas

The name is a direct derivation of the Latin cicada, meaning "tree cricket". There is no word of proper English, or indeed Germanic, etymology for the insect. In ancient Greek, it was called a tettix, and in modern Greek tzitzikas—both names being onomatopoeic.

You can see the 3 simple eyes in the middle of the head, these are called ocelli. The word ocelli is derived from the Latin word ocellus and means little eye. The ocelli are simple eyes that are use to orientate themselves towards the sun. Located in a triangular shape are two dorsal ocelli and one central ocelli.