Copper Underwing/Svensson’s Copper Underwing – The underside of the hindwing is considered the most, but not totally reliable distinguishing feature, therefore dissection will be required for 100% certainty. All other external features currently used are considered subjective and unreliable -
Please record as Copper Underwing agg. if the underside of hindwing has not been checked.
Recorded in 54 (78%) of 69 10k Squares.
First Recorded in 1930.
Last Recorded in 2020.