It would be good if when a Jersey Tiger is caught to check if the hindwings are orange (normal) or yellow (form lutescens) so that we can get some idea of the proportions of the two forms (include the information when you send the record to your county recorder).
Thanks
Martin Albertini
Bucks moth recorder
A Blog for moth recorders in Bucks, Berks and Oxon
Although not in the Upper Thames area I have had eight normal and one yellow fly into my living-room in North London since the 14th July.
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