Geometridae : Larentiinae
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Scallop Shell
Rheumaptera undulata

(Linnaeus, 1758) 1789 / 70.121
=Hydria undulata
Photo © Ray Priestley,  Fishlake 24/06/2024

Immature stages

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Similar Yorkshire Species: None
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Yorkshire Status: Local resident.

This beautiful moth is a species of damp woodland and scrubby areas, the larvae feeding on sallows. Almost 90% of our records are of single moths, suggesting that it does not come strongly to light. It has probably never been particularly common in the county - Porritt labelled it "pretty but uncommon". Numbers in the county seem to be stable.

Sutton & Beaumont, 1989: There have recently been several records for this species from vice-counties 61, 63 and 64. Previously it had not been recorded since 1914 (YNU, 1970), although Walsh (1956) mentions several 'of late years'.

Recorded in 62 (31%) of 200 10k Squares.
First Recorded in 1883.
Last Recorded in 2024.
Additional Stats

< Argent & Sable  |  Scarce Tissue >
Forewing: 16-19mm
Flight: June - July
Foodplant:   Sallows, Aspen, Bilberry
Red List Status: Least Concern (LC)
GB Status: Common
Verification Grade:  Adult: 1
List Species Records   [Show All Latest]
Latest 5 Records
Date#VC10k Area
13/08/2024165SE19 - Leyburn / Catterick Garrison
29/07/2024162SE98 - Wykeham
29/07/2024162TA08 - Scarborough
23/07/2024165SE19 - Leyburn / Catterick Garrison
18/07/2024161SE64 - Wheldrake
  Immature   Adult   [Show Flight Weeks]
Show Details | 1990 to 2024 | 2000 to 2024 | Graph Key
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