Geometridae : Larentiinae
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Scallop Shell
Rheumaptera undulata

(Linnaeus, 1758) 1789 / 70.121
=Hydria undulata
Photo © Ian Andrews,  SE79934916Pocklington, VC61

Immature stages

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Similar Yorkshire Species: None
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Yorkshire Status: Rare and 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 61 (31%) of 200 10k Squares.
First Recorded in 1883.
Last Recorded in 2023.
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
06/08/2023163SE02 - Halifax
02/08/2023162SE98 - Wykeham
25/07/2023365SE19 - Leyburn / Catterick Garrison
19/07/2023162NZ62 - Redcar / Saltburn-by-the-Sea
19/07/2023265SE19 - Leyburn / Catterick Garrison
  Immature   Adult   [Show Flight Weeks]
Show Details | 1990 to 2023 | 2000 to 2023 | Graph Key
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