Recent studies have shown the ocelli of some insects (most notably the dragonfly, but also some wasps) are capable of form vision, as the ocellar lens forms an image within, or close to, the photoreceptor layer.

What organisms have ocelli?

For example, locusts, dragonflies, cockroaches and most species of flies are all equipped with ocelli. Many studies on ocellar function have been done on these species.

Where is ocelli found?

The word ocelli is derived from the Latin word ocellus and means little eye. The ocelli are simple eyes that bees use to orientate themselves towards the sun. Located in a triangular shape are two dorsal ocelli and one central ocelli. They are located dorsally on the bees head (see images above for location).