Acronicta impressa, the impressive dagger moth or willow dagger moth, is a moth of the family Noctuidae. The species was first described by Francis Walker in 1856. It is found from western Canada to north-western Mexico.

The wingspan is about 38 mm. Adults are on wing from early to midsummer depending on the location.

Recorded food plants include bitterbrush, rose, aspen, poplar and willow.

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