Chrysiridia rhipheus (Madagascan sunset moth) is a day-flying moth of the family Uraniidae. It is considered one of the most impressive and appealing-looking lepidopterans. Famous worldwide, it is featured in most coffee table books on Lepidoptera and is much sought after by collectors. It is very colourful, though the iridescent parts of the wings do not have pigment; rather the colours originate from optical interference. Adults have a wingspan of 7–9 cm (2.8–3.5 in).