Green Oak Tortrix Tortrix viridana
Wingspan 18-23 mm.
A very distinctive species, this is the only plain green 'Tortrix' in the British Isles.
It is common to very common in many parts of Britain, inhabiting Oak woodland, and can become a pest, the abundant larvae sometimes completely defoliating trees.
Flying during May and June, from dusk onwards, it can also be found resting in sunshine.
Although oak (Quercus) is the main foodplant, other deciduous trees are also used, the larvae feeding in a rolled-up or folded leaf.