August Thorn Ennomos quercinaria - Distribution map

Please note that the NBN Gateway map service has been terminated as of 1 April 2017.

As soon as a replacement map service is available, distribution maps will hopefully appear here again.

In the meantime, you can get some idea of distribution from the NBN Atlas website.

View the NBN Atlas Map

70.233 BF1912

August Thorn Ennomos quercinaria

(Hufnagel, 1767)


Wingspan 42-50 mm.

One of several similar 'Thorns', the adults of this species can be distinguished by the shape of the cross-lines on the forewing. The inner line is distincly curved, and the outer line has a 'kink' where it meets the leading edge.

Flying in August and September, the species is often attracted to light. The foodplants are trees such as oak (Quercus) and beech (Fagus).

It inhabits woodland and suburban habitats, and can be found locally throughout most of Britain.
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