The Great Brocade or Great Gray Dart (Eurois occulta) is a moth of the family Noctuidae. It is found in Northern and Central Europe, Northern and Central Asia and the Northern parts of North America (coast to coast in Canada, south in east to Virginia and the Great Lakes States).
Illustration from John Curtis's British Entomology Volume 5
The wingspan is 50-60 mm. The moth flies from June to September depending on the location. There is one generation in North America.
It has been suggested, based partly on pupal remains in peat, that outbreaks of this species played a role in the collapse of Viking settlements in Greenland. Unfortunately these deposits at Anavik are now dried out and any potential evidence has been lost.
The larvae feed on Myrica gale, Vaccinium, Birch, Willow and other herbaceous plants.
↑ Iversen, J. (1934). Moorgeologische Untersuchungen auf Gr nland. Meddelelser fra Geologiske Foreningen 8: 342-358
↑ Iversen, J. (1954). Origin of the flora of western Greenland in the light of pollen analysis. Oikos 4: 85-103
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