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Perizoma affinitata (Stephens, 1831)
Geometridae: Larentiinae
1802 / 70.132
Photo © Andy Nunn,  Skidby VC 61

Similar Yorkshire Species
Small Rivulet
Perizoma alchemillata
Forewing: 12-15mm
Flight: May - July, August - September
Foodplant:   Red Campion.
Red List: Least Concern (LC)
GB Status: Common
Verification Grade:  Adult: 2

Yorkshire Status: Common and fairly widespread resident.

This species is present all over most of the county where the larvae feed on red campion. There has been little change in numbers or distribution. It is bivoltine in Yorkshire with two overlapping broods. Take care not to confuse it with the smaller Small Rivulet which emerges later. The usual feature used to separate these two species is the single indentation in the white central band (double in Small Rivulet) but this is not 100% reliable as Rivulet can sometimes show a small second indentation.

Sutton & Beaumont, 1989: Taken occasionally in all five vice-counties wherever its foodplant (red campion) occurs.

Recorded in 135 (68%) of 200 10k Squares.
First Recorded in 1883.
Last Recorded in 2023.
Additional Stats

Latest 5 Records
Date#VC10k Area
30/08/2023165SE37 - Ripon
23/08/2023162NZ61 - Guisborough
18/08/2023262TA08 - Scarborough
17/08/2023161TA17 - Bempton
15/08/2023162NZ61 - Guisborough
Further info: Perizoma affinitata
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