Ocelli (singular: ocellus) are simple eyes and are found on many different kinds of insects (such as bees, wasps, flies and dragonflies) and spiders. In adult insects, like the beautiful … Continue Reading Look into my ocelli! Simple eyes.
Anyone who has ever sat and watched dragonflies flying over a pond; turning back and forth and darting up to investigate an intruder, will not be surprised to learn … Continue Reading Dragonfly eyes
In a classic study, the pioneering Dutch ethologist, Niko Tinbergen, and his students famously studied the courtship behaviour of the Grayling butterfly, Hipparchia (=Satyrus) semele, at Hulshorst – a sandy … Continue Reading Dots in spots: butterfly eyespots II. Tinbergen and the Grayling.