Over a million species of insects have already been named, catalogued and pictured. Theories as to how many are still to be named in collections, and discovered for the first time in the wild, vary considerably. However a figure of over 2 million is conservative. Imagine natural selection, the environmental forces acting on the survival of a species in a particularhabitat, working over millions of years to adapt forms and behaviour for survival. As these changes are driven by random mutations in hugepopulations of a species, some of these mutations are neutral. They neither hinder nor help the species to survive.