Davey, P., 2009: A frequent species in southern Britain, more local further north, the larva feeding on oak (Quercus spp.), lime (Tiliae spp.) and birch (Betula spp.). In Dorset, the moth is restricted to old birch and oak woods; it is seldom found in open country. It has also been trapped in suburban areas such as Wimborne, where lime (Tilia platyphyllos x cordata) is likely to the host plant. September Thorns between mid-July and mid-August are smaller and paler than their... Read More

Recorded in 25 (63%) of 40 10k Squares. First Recorded in 1930. Last Recorded in 2019. (Data up to end 2019) Additional Stats

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