Keys to butterfly description terms

[Painted Jezebel]

For many newcomers to Butterflies, the descriptive terms often used can seem like another language, such as Space2, Tornus, Cell, Submarginal spots etc. Accordingly, I have rifled my library and copied some diagrams which, I hope, will help explain some of these alien terms.

Those of you with Pisuth's book will recognise the last three.