The Brown-spot Flat-body moth (Agonopterix alstromeriana) has a very descriptive name, which is characterised by markings on each wing of a large black blotch with adjacent rusty red mark plus a row of black dots on the wing-tip. It may all look a bit random, but is pretty consistent on each moth. The larvae feed on the flowers and leaves of Hemlock. This one was found in one of the hides, hence the poor surround to the photo. They are quite small - about 1cm long.