Hepialidae
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Photo © David Hunt,  Harpenden, Hertfordshire (19/08/16) - Female

Similar Herts & Middlesex Species
Common Swift
Korscheltellus lupulina
Map-winged Swift
Korscheltellus fusconebulosa
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Orange Swift
Triodia sylvina

(Linnaeus, 1761) 15 / 3.001
=Hepialus sylvina

General Remarks:
Large, pale forms of the female can look confusingly like similar forms of female Common Swifts. Separation is easily effected by looking at the diagonal white line on the forewing, which runs to the apex in Common Swift and to the leading edge of the wing, just before the apex, in Orange Swift.

Hertfordshire Notes: First listed for the county by J. F. Stephens from Hertford in his Illustrations of British Entomology : 8, published in 1828, it appears to have been widespread when Foster wrote his 1937 Hertfordshire inventory, although many of the 15 localities that he noted relate to lists made tens of years earlier. Interestingly, this moth is also poorly represented in the county's strictly calcareous grasslands, evidently preferring those of a more mesotrophic nature; this may partly explain the blank area in the north-east of the map where the Chalky Boulder Clay provides a basis for an intensely arable area.

Middlesex Notes: Widespread and common away from the most densely urban area of central London. Adults August and September. Unkempt gardens, including neglected lawns, may possibly be amongst the reasons why this species is evidently able to thrive in the urban zone of London, although the map does show an apparent absence from the south-east (the City and other parts of central London) where there may simply be no areas of suitable habitat to occupy.

Recorded in 35 (85%) 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
22/10/2023120SP91 - Tring
11/09/2023120TL23 - Letchworth / Baldock
11/09/2023120TL23 - Letchworth / Baldock
11/09/2023120SP91 - Tring
10/09/2023120TL23 - Letchworth / Baldock
Show Details | 1990 to 2023 | 2000 to 2023 | Graph Key
Express Record Orange Swift
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VC20 VC21 VC21 VC20
Click Map for Details
Forewing: M 12-18mm F 15-26mm.
Flight: One generation. July-Sept.
Foodplant:   Herbaceous plants
Red List: Least Concern (LC)
GB Status: Common
Verification Grade:  Adult: 1
 Immature Adult   [Show Flight Weeks]
© hertsmiddxmoths.uk 2024 NOLA®; Database using MapMate® Digital Maps © Bartholomew 2010. Design © Jim Wheeler 2024
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