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The Bright-line Brown-eye Moth (Lacanobia oleracea) or Tomato Moth is of the family Noctuidae which is in the genus Lacanobia. This common and widespread species occurs in the temperate areas of Eurasia as well as parts of North Africa. Having overwintered underground as a papa, the adult merges in early May and is on the wing until early July. In warmer regions there is a second generation and that flight season is during August and September. The caterpillar or larva stage is from June into early October.
Patrick J. O'Keeffe / Raw Birds
References and highly recommended reading:
Field guide to the Moths of Great Britain and Ireland by Paul Waring, Martin Townsend and Richard Lewington
Field guide to the Caterpillars of Great Britain and Ireland by Barry Henwood, Phil Sterling and Richard Lewington