Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Melittia chalybescens is a moth of the Sesiidae family. It is known only from Queensland, where it was collected near Kuranda and Mackay. The length of the forewings is 14-15 mm for males and about 16 mm for females.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.