Coptotriche marginea is a moth

Moth

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 , with thousands of species yet to be described...

 of the Tischeriidae family. It is found in most of Europe

Europe

Europe is, by convention, one of the world's seven continents. Comprising the westernmost peninsula of Eurasia, Europe is generally 'divided' from Asia to its east by the watershed divides of the Ural and Caucasus Mountains, the Ural River, the Caspian and Black Seas, and the waterways connecting...

.
The wingspan

Wingspan

The wingspan of an airplane or a bird, is the distance from one wingtip to the other wingtip. For example, the Boeing 777 has a wingspan of about ; and a Wandering Albatross caught in 1965 had a wingspan of , the official record for a living bird.The term wingspan, more technically extent, is...

 is 7-8 mm. Adults are brownish with a slight metallic sheen. They are on wing from May to June and again in August.

The larvae feed on Rubus caesius, Rubus canescens, Rubus discolor, Rubus fruticosus, Rubus grabowskii, Rubus hypargyrus, Rubus idaeus

Rubus idaeus

Rubus idaeus is a red-fruited species of Rubus native to Europe and northern Asia and commonly cultivated in other temperate regions. A closely related plant in North America, sometimes regarded as the variety Rubus idaeus var...

, Rubus laciniatus

Rubus laciniatus

Rubus laciniatus, the Cutleaf Evergreen Blackberry or Evergreen Blackberry, is a species of Rubus native to Europe. it is an introduced species in North America...

, Rubus macrophyllus, Rubus nemorosus and Rubus saxatilis

Rubus saxatilis

Rubus saxatilis or Stone Bramble is a species of bramble found in Europe and temperate Asia to Japan. The green stems are 20–60 cm tall and covered with minute needle-like prickles, and leaves are usually compound with three leaflets...

. They mine

Leaf miner

Leaf miner is a term used to describe the larvae of many different species of insect which live in and eat the leaf tissue of plants. The vast majority of leaf-mining insects are moths , sawflies and flies , though some beetles and wasps also exhibit this behavior.Like Woodboring beetles, leaf...

 the leaves of their host plant. The mine has the form of a short corridor that widens into a long, elliptic blotch. The blotch is upper-surface and whitish to yellow-brown. The inside of the mine is lined with silk. The frass

Frass

Frass is the fine powdery material phytophagous insects pass as waste after digesting plant parts. It causes plants to excrete chitinase due to high chitin levels, it is a natural bloom stimulant, and has high nutrient levels. Frass is known to have abundant amoeba, beneficial bacteria, and fungi...

is ejected out of the mine through an opening in the underside of the mine. Pupation takes place within the mine in a pupa without a cocoon. Larvae can be found in June and again from September to March.