Nightfall. A gentle shift from light to dark. The Alder Moth (Acronicta alni) is not a moth that flies at dusk but the Latin name implies that it might - acronicta means nightfall. Each moth species seen for the first time (this is number 334 for Shandy Hall) emphasises the extraordinary beauty of these insects. The markings on the wings of the Alder Moth are as complex and interwoven as the mirror patterns of a Rorschach test. This moth was a real joy to see in the drizzling dawn.