Myoglossata is a clade within suborder Glossata within order Lepidoptera, the butterflies and moths. It contains the family Neopseustidae and the clade Neolepidoptera.[1] Myoglossata is considered a clade, that is, a group of organisms made up of a single common ancestor and all of its descendants. They are distinguished by "intrinsic mouthparts".[2] These added intrinsic galeal muscles are unique to the Myoglossata and developed after the galeae changed to form sucking parts.[3]
^Krenn, H. W., Kristensen, N. P. 2007. Evolution of proboscis musculature in Lepidoptera. European Journal of Entomology, 2004 (Vol. 101) (No. 4) 565-575.