Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Rice Leafroller (Cnaphalocrocis medinalis) is a species of moth of the Crambidae family. It is found in south-east Asia, including Hong Kong, Sri Lanka, Taiwan, Thailand and most of Australia. The wingspan is about 16 mm. The larvae are considered a pest on Zea mays, Oryza sativa and Triticum, Saccharum and Sorghum species. A moth is an insect closely related to the butterfly, both being of the order Lepidoptera. Moths form the majority of this order; there are thought to be 150,000 to 250,000 different species of moth (about ten times the number of species of butterfly), with thousands of species yet to be described.