I was very interested by Bill's Leek Moth. For the last three years my leeks have been badly hit by something eating the hearts of them and leaving holes and frass in return. I have tried to hatch out the cocoons to see what was causing it after finding no pests listed in my gardening books. I see from the distribution maps that the moth is rare and local. I estimate that I have had several dozen each year recently and have had to resort to spraying them with liquid soap in order to save my vichyssoise for the winter. I will look at them more kindly in the future