One for the Year 5 students

My daughter came home from school on Friday and mentioned that they had been talking about evolution etc in class that day and the teacher had mentioned the famous study on Peppered Moths that had showed the selection of the population to the preference of the dark form during the Victorian era. Completely by coincidence I had trapped my first one of the year the previous evening and was able to show it to her. All mine I have had in the garden have been light individuals apart from one that arrived last June, which I have illustrated here alongside the normal variation.