It happened one day at primary school back in the 1960’s. “It’s biting me, it’s biting me!!” the boy screamed as he sprinted past me. He then collapsed on the ground in flamboyant B-grade movie style, shrieking loudly. I ran up to him and could see the culprit clinging to his leg, a very large but harmless moth which I now know it to be one of the ‘rain moths’ of the family Hepialidae (below).