Noctuidae : Noctuinae
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Similar Herts & Middlesex Species
Dotted Rustic
Rhyacia simulans
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Stout Dart
Spaelotis ravida

([Denis & Schiffermüller], 1775) 2113 / 73.349

General comments
Extinct resident.

Proof will always be required if re-found. Live specimens should be shown to the County Moth Recorder with utmost urgency. The Stout Dart is, potentially, on the verge of extinction in Britain if not already there. Our last record was in 2001, but there are only 26 county records from 1887 to that latter year. It should be noted that this moth is suspected of engaging in enormous population swings, much in the manner of the Dotted Rustic (Rhyacia simulans) which was frequent in the 1980s but which was quite absent ten years later and may now (2022) be staging a comeback. However, unlike the Dotted Rustic, which maintains a population in Scotland, the Stout Dart has probably now vanished from the entirety of the British Isles.

Determination by Genitalia Examination Required

Recorded in 16 (39%) of 41 10k Squares.
First Recorded in 1887.
Last Recorded in 2001.
Additional Stats

< Lesser Broad-bordered Yellow Underwing | Great Brocade >

List Species Records   [Show All Latest]
Latest 5 Records
Date#VC10k Area
14/08/2001120TL41 - Sawbridgeworth / Bishop's Stortford
1999120TL11 - Harpenden / Wheathampstead
1999120TL42 - Bishop's Stortford (N)
27/07/1994120TL42 - Bishop's Stortford (N)
26/07/1994120TL41 - Sawbridgeworth / Bishop's Stortford
Show Details | 1990 to 2023 | 2000 to 2023 | Graph Key
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VC20 VC21 VC21 VC20
Click Map for Details
Forewing: 18-22mm.
Flight: One generation June-Sept.
Foodplant:   Dandelion, sow-thistles and docks
Red List: Critically Endangered (CR)
GB Status: Nationally Rare
Former Status: Local
Verification Grade:  Adult: 4
 Immature Adult   [Show Flight Weeks]
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