Scallop Shell Hydria undulata: 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

70.121 BF1789
Scallop Shell Hydria undulata

(Linnaeus, 1758)


Wingspan 25-30 mm.

A highly distinctive moth, unlikely to be confused with any other British species.

It prefers open woodland with an undergrowth of bilberry, and marshy areas, and flies in a single generation from June to July.

It occurs locally over a large part of the British Isles as far north as southern Scotland.

The larvae spin together leaves at the tips of shoots of sallow (Salix), and bilberry (Vaccinium myrtillus).
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