Chilo phragmitellus
Chilo phragmitellus is a curiously shaped Grass Moth and the biggest of
them all. This also makes it one of the easiest to identify. Males and
females however are different. Males are darker. Their wings are much
broader and less pointed. Their hind wing is brownish or yellowish
white. They'll reach a wingspan of 24 to 32 mm. This makes them rather
big for Grass Moths, but they remain still small compared to the
females, which may reach a wingspan of up to 40 mm. The forewings of the
females are narrower and longer than those of the males. The hind wing
is pure white in females. Chilo phragmitellus is single-brooded and on
the wing in June and July. It flies after dark only. Females are good
flyers and may be encountered far from the breeding grounds. Males fly
less well and stay close to the breeding grounds. The larvae live in the
stem and root of common reed, thus making reed beds the main breeding
grounds of this species. Chilo phragmitellus is not uncommon in reed
beds in Wales and England.
http://www.gartenteich-ratgeber.com/tiere/insekten/schilfzuensler.html
