Elachista canapennella

The wingspan is 8–10 millimetres (0.31–0.39 in).[1] The head is grey, face whitish. Forewings in male pale grey irrorated with black, in female blackish except on basal area; a somewhat oblique fascia before middle, a tornal spot, and triangular costal spot somewhat beyond it in male very indistinct, whitish, almost obsolete, in female broader, white, conspicuous. Hindwings are grey. The larva is pale yellowish-grey ; head pale brown.[2]

Adults are on wing from April to June and from July to September. There are two generations per year.

The larvae feed on creeping bent (Agrostis stolonifera), false oat-grass (Arrhenatherum elatius), Avenula pubescens, tufted hairgrass (Deschampsia cespitosa), fescue (Festuca species), creeping soft grass (Holcus mollis) and meadow-grass (Poa). They mine the leaves of their host. The pupation takes place outside the mine.[3]

It is found from Fennoscandia and northern Russia to the Pyrenees, Italy and Romania and from Ireland to central Russia.[3]

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