The Moths of Suffolk
2091 Dark Sword-grass, Agrotis ipsilon, (Hufnagel, 1766)

National Status : Immigrant

Local Status : Immigrant (SMP Status 2)

Distribution and abundance : A regular immigrant that has been recorded in most areas of the county

Flight Period : Most numerous between July and October but could occur in any month

Larval foodplants : Roots and lower stems of various herbaceous plants

Morley's Final Catalogue : Entry covers Pearly Underwing and Dark Sword-grass. Quite common on sugar in autumn from Bentley Woods to Gorleston. The former (Pearly Underwing) seems hardly less restricted in its range now than the latter: they sometimes sit on the tree-trunk cheek by jowl.

Wingspan details : Forewing 15-25mm, Wingspan 40-55mm

Identification

Confusion species
    AdultPearly Underwing, Peridroma saucia

Compare confusion species
    Adult

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Hopton (24.iv.2003) © P Bryant

Flight chart
JFMAMJJASOND
2 7 19 37 75 51 100 9

Life history chart
JFMAMJJASOND
imago imago imago imago ovaimago ovalarvaimago larvapupa imago imago no data

Further Photographs

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Eye, Suffolk (30.vii.2006) © Paul Kitchener
Ipswich, Suffolk (viii.2006) © Neil Sherman
Bawdsey, Suffolk (6.vi.2009) © Matthew Deans
 
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Norfolk (12.viii.2009) © Lee Gregory
Orfordness, Suffolk (14.viii.2009) © Lee Gregory
VC 25, Gorleston, Suffolk (25.vi.2010) © Brian Jones
 
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On Ivy blossom - Ipswich, Suffolk (3.x.2012) © Neil Sherman
Ipswich, Suffolk (23.viii.2015) © Neil Sherman
Dunwich, Suffolk (30.viii.2018) © Paul Kitchener
 
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Dunwich, Suffolk (6.ix.2018) © Paul Kitchener