The Moths of Suffolk
2441 Silver Y, Autographa gamma, (Linnaeus, 1758)

National Status : Immigrant

Local Status : Common immigrant (SMP Status 1)

Distribution and abundance : May occur anywhere

Flight Period : Multiple broods; may be recorded at any time of the year although bulk of records are in May to October

Larval foodplants : Various low-growing herbaceous plants

Morley's Final Catalogue : This restless animal, said to be the sole one endowed with perpetual motion is normally abundant everywhere (cf. Trans. ii, 294) though sometimes quite rare. Occasionally on the wing as late as 10 October at Monks Soham; often at Aster flowers in Easton and Southwold salt-marshes.

Wingspan details : Forewing 13-21mm, Wingspan 32-52mm

Identification

Confusion species
    AdultScar Bank Gem, Ctenoplusia limbirenaNi Moth, Trichoplusia ni
Dewick's Plusia, MacDunnoughia confusaBeautiful Golden Y, Autographa pulchrina
Plain Golden Y, Autographa jotaScarce Silver Y, Syngrapha interrogationis
Essex Y, Cornutiplusia circumflexa

Compare confusion species
    Adult

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Bawdsey (xi.2004) © M Deans

Flight chart
JFMAMJJASOND
1 20 40 100 20 6 2

Life history chart
JFMAMJJASOND
ovalarvapupaimago ovalarvapupaimago ovalarvapupaimago ovalarvapupaimago ovalarvapupaimago ovalarvapupaimago ovalarvapupaimago ovalarvapupaimago ovalarvapupaimago ovalarvapupaimago ovalarvapupaimago ovalarvapupaimago

Further Photographs

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Swept from saltmarsh plants - Titchwell, Norfolk (27.viii.2012) © Neil Sherman
Ipswich, Suffolk (xi.2004) © N Sherman
form pallida - Great Cornard, Suffolk (30.vii.2006) © Stuart Read
 
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Many nectaring on Bramble. - Cley, Norfolk (23.vii.2006) © Lee Gregory
Found by day on toadflax - Aldeburgh, Suffolk (viii.2006) © Neil Sherman
Brandon, Suffolk (28.vi.2008) © Lee Gregory
 
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Ipswich, Suffolk (2.viii.2009) © A Prichard
Ipswich, Suffolk (2.viii.2009) © A Prichard
form gammina - Orford Ness, Suffolk (24.vii.2010) © A Prichard
 
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Found by day on snow patch at 2300m - Pont D'Espagne (above Cauterets) Pyrenees, France (10.vi.2010) © Neil Sherman
Typical specimen with a f.gammina - Ipswich, Suffolk (25.viii.2015) © Neil Sherman
Ipswich, Suffolk (5.x.2017) © Paul Kitchener