Leaf-mine: Egg well visible, on the upper surface (contary to Metallus pumilus). The mine is a large, transparant, upper-surface blotch, yellowish green at first, brownish later. Silk is deposited in the mine, but the quantity is too little to influence its colour; also the mine does not contract, like in C. marginea. All frass is ejected through a small opening in the underside of the mine. Pupation takes place after hibernation, within the mine; pupa not in a cocoon (Bladmineerders van Europa).

Larva: The larva is illustrated in Bladmineerders van Europa.

Coptotriche heinemanni larva, dorsal Image: Willem Ellis (Bladmineerders van Europa)

Pupa: The pupa is illustrated in Bladmineerders van Europa.

Adult: Not illustrated in UKMoths (check for update). The genitalia are not illustrated by the Lepidoptera Dissection Group (check for update).

Hosts in Britain:

Hosts elsewhere:

Time of year - larvae: September - October (Bladmineerders van Europa).

Time of year - adults: Unknown.

Distribution in Great Britain and Ireland: Britain (Karsholt and van Nieukerken in Fauna Europaea).

NBN Grid map: Note that not all datasets on the NBN Gateway may be available on the map below. If you are an NBN Gateway registered user you can request access for missing datasets via the link 'Open interactive map in new window' below.

Distribution elsewhere: Widespread in continental Europe including Austria, Czech Republic, Estonia, Finland, French mainland, Germany, Hungary, Italian mainland, Latvia, Norwegian mainland, Poland, Romania, Slovakia, Sweden, The Netherlands and Ukraine (Karsholt and van Nieukerken in Fauna Europaea).

NBN interactive distribution map(s) of known host species in Great Britain and Ireland and elsewhere:

Parasitoids in Britain and elsewhere: Unknown.