Bionics is a progressive orientation in engineer work. Its main objective is to create new kinds of highly effective machines that function like living organisms. For this bionics prepares the ground by systematically investigating the multiplicity of biological structures, form and processes and ways these are functionally interrelated. There are some peculiarities with butterflies: they are the youngest insects in terms of their evolutionary history. The ancestors of present day butterflies flitted into air about 40-50 million years ago (the mid Eocene epoch). Moth evolved long before butterflies. Archaelepis mane is the earliest known Lepidopteran fossil. It dates from the Lower Jurassic (ca 190 million years ago. Through natural selection, the butterflies have been experimenting with scale microstructure and scale coverage for many million years. The scale microstructure and scale coverage of butterflies are multifunctional.