The Agriphila geniculea is a moth of the family crambidae, with a wingspan of 20 -26 mm. It can be found in Europe and parts of North Africa.
Distinctive character of this species are the lines present on the front wings with a strong curvature that normally serve to distinguish this moth, but some specimens of the lines are not visible. Very similar from A. tolli is distinguished from the latter to the distance that separates the two lines (photo 2) than in A. geniculea is substantially higher.
It is a native habitat dry, green areas, sand-dunes, and similar places.
Fly from July to October, and is present in suitable habitats in much quantity.
It winters in the caterpillar stage and remains in this stage until the beginning of May, lives a fragile cocoon of silk, camouflaged with excrement, at the base of small herbs. Sometimes the cocoon and is curled tightly in the characteristic shape of a coil around a thin stem.
Various grass species, such as sheep fescue (Festuca ovina), are the host plants.