Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Caloptilia alnicolella is a moth of the Gracillariidae family. It is known from Québec and the United States (Colorado and Maine). The larvae feed on Alnus species. They mine the leaves of their host plant. The mine starts as a small, tentiform mine on the underside of the leaf. Later, the tip of a leaf is rolled downward. 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.