Geometridae : Larentiinae
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Small Rivulet
Perizoma alchemillata

(Linnaeus, 1758) 1803 / 70.133
Photo © Andy Nunn,  Cottingham VC 61

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Perizoma affinitata
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Yorkshire Status: Common and fairly widespread resident.

This univoltine species flies later than Rivulet and often appears with the second brood of that species. Records in May and early June are often misidentifications of Rivulet. The two species can have very similar markings at times but there is little overlap in size. It is well distributed across the county in good numbers. Apart from the identification features noted under Rivulet, Small Rivulet often has a faint additional cross band nearer to the base of the wing. The larvae are said to feed on Common Hemp Nettle but the moth often appears where the foodplant does not occur so there may be other plants involved.

Sutton & Beaumont, 1989: Recorded from all five vice-counties but generally in fairly small numbers.

Recorded in 161 (81%) of 200 10k Squares.
First Recorded in 1883.
Last Recorded in 2023.
Additional Stats

< Rivulet  |  Barred Rivulet >
Forewing: 9-11mm.
Flight: June - August
Foodplant:   Common Hemp-nettle
Red List Status: Least Concern (LC)
GB Status: Common
Verification Grade:  Adult: 2
List Species Records   [Show All Latest]
Latest 5 Records
Date#VC10k Area
06/09/2023164SE27 - Kirkby Malzeard
31/08/2023162TA08 - Scarborough
29/08/2023163SK39 - Ecclesfield
26/08/2023261TA07 - Hunmanby
22/08/2023165SE37 - Ripon
  Immature   Adult   [Show Flight Weeks]
Show Details | 1990 to 2023 | 2000 to 2023 | Graph Key
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