They're out to bait the Purple Emperor, one of Britain's most elusive butterflies, whose beauty disguises some filthy feeding habits. You never forget your first time, says butterfly enthusiast ...

If you spot the Purple Emperor and are happy to share your photos please send them to [email protected] More on this story The butterfly that feeds on rotting flesh ...

In this guide, we will look at 8 steps to drawing a butterfly and a flower for it to perch on. I created it in Photoshop ...