Species: Grey Dagger (Acronicta psi)
Originator: Frode Falkenberg
Norwegian name: Psikveldfly
Host plants: Alder (Alnus), Apple (Malus), Asalslekta (Sorbus), Aspen and Poplar (Populus), Birch (Betula), Blackthorn (Prunus spinosa), Elm (Ulmus), Hawthorn (Crataegus), Hazel (Corylus), Kirsebærslekta (Prunus), Oak (Quercus), Roseslekta (Rosa), Willows, Sallows and Osiers (Salix)
Confusion species: Dark Dagger (Acronicta tridens), The Sycamore (Acronicta aceris)
Systematics :
| Kingdom | Animals (Animalia) | ||||||||
| Phylum | Articulate animals (Arthropoda) | ||||||||
| Klasse | Insects (Insecta) | ||||||||
| Order | Moths and butterflies (Lepidoptera) | ||||||||
| Group | Macro-moths («Macro-heterocera») | ||||||||
| Family | Owlet moths (Noctuidae) | ||||||||
| Subfamily | Acronictinae | ||||||||
| Genus | Acronicta | ||||||||
| Species | Grey Dagger (Acronicta psi) | ||||||||
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