Saturniidae : Saturniinae
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Photo © Liz Goodyear,  Ware, Hertfordshire (08/04/20)

Immature stages

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Similar Herts & Middlesex Species: None
 
Emperor Moth
Saturnia pavonia

(Linnaeus, 1758) 1643 / 68.001

General comments:
Widespread but local across both counties. The wider availability of pheromone lures has led to a big increase in records of adult males in the past few years. There has probably not been any change of status. Although female Emperors sometimes come to light traps, this is a rare event, whilst the large and striking caterpillars are surprisingly well camouflaged and are extremely difficult to find, especially when feeding in difficult to search bramble patches.

Hertfordshire Notes:
Evidently widespread, but there are some areas where searching for it has failed.

Middlesex Notes:
Widespread, but probably more localised than in Hertfordshire.

Recorded in 31 (76%) of 41 10k Squares.
First Recorded in 1887.
Last Recorded in 2023.
Additional Stats

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List Species Records   [Show All Latest]
Latest 5 Records
Date#VC10k Area
20/05/2023121TQ17 - Brentford / Hounslow / Richmond
17/05/2023121TQ08 - Uxbridge
14/05/2023121TQ16 - Sunbury / Hampton Court
29/04/2023121TQ08 - Uxbridge
22/04/2023120TL12 - Hitchin (S) / Whitwell
Show Details | 1990 to 2023 | 2000 to 2023 | Graph Key
Express Record Emperor Moth
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VC20 VC21 VC21 VC20
Click Map for Details
Forewing: M 27-32mm. F 35-41mm.
Flight: One generation. March-May.
Foodplant:   Woody plants Heathers, Bramble, Hawthorns etc
Red List: Least Concern (LC)
GB Status: Common
Verification Grade:  Adult: 1
 Immature Adult   [Show Flight Weeks]
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