The Crescent Helotropha leucostigma: 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

73.119 BF2368
The Crescent Helotropha leucostigma

(Hübner, [1808])


Wingspan 37-44 mm.

Locally widespread throughout Britain, this is a species of damp, marshy woodland and moorland. In addition to the typical form there is a well-marked variation, ab. fibrosa, which is just as frequent, as well as several intermediate forms.

It flies in August and September, the eggs overwintering and hatching in spring when the larvae feed on the stems of marshland plants, such as yellow flag (Iris pseudacorus).

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