General comments:
Widespread but local resident.

Beginners should be aware of the potential to confuse this species with the Lesser Treble-bar. Both species are widespread, but the Treble-bar is found in far more sites than the Lesser Treble-bar in our two counties, though both appear to have similar habitat requirements and identical larval foodplants. Both species seem to be absent from a chunk of north-east Herts and the eastern side of Middlesex.

Recorded in 33 (80%) of 41 10k Squares. First Recorded in 1887. Last Recorded in 2023. Additional Stats

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