The adults of these plant-feeding insects are of two different species. One can fly, while the other cannot. The structures of these two species have not changed for millions of years. All the complex structures and systems of today"s insects were also
The adults of these plant-feeding insects are of two different species. One can fly, while the other cannot. The structures of these two species have not changed for millions of years. All the complex structures and systems of today"s insects were also possessed by planthoppers l