Summary

Richard South The Moths of the British Isles Second Series… (1909)

Thus, a caterpillar hatching in August, 1908, would be mature about May, 1910, pupate in that month, or the next, and the perfect insect would appear in June or July.
The moth flies at night, and may be attracted by a brilliant light. The earliest known British locality for the species was Holme Fen in Huntingdonshire (1841-1848) .
Source: Wikisource

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