Last modified: Jan. 6, 2020, 2:22 p.m.
A very rare species in Belgium living locally in rather wet biotopes.
The fore wings are metal green. The antennae are blackish dark till 2/3 to the tip, beyond there they are white.
Wingspan is 10–13 mm.
Head and plates are black. The body is dull yellowish white.
The caterpillar makes a blackish brown trivalved case of about 8 mm.
The mouth angle is 0°–10°, causing the case to lay almost flat on the leaf.
See also bladmineerders.be.
The larvae live at the under side of a leaf. They are fully grown at the end of May or beginning of June.
Pupation takes place on a stem nearby ground level.
The adults fly in one generation a year: from late May towards early July, sometimes even till the end of August.