The Moths of Suffolk
2447 Scarce Silver Y, Syngrapha interrogationis, (Linnaeus, 1758)

National Status : Local

Local Status : Rare migrant (SMP Status 4)

Habitats : Moorland

Flight Period : Single-brooded; late June to August

Larval foodplants : Heather, Bilbery and Bog Bilberry

Records : Nowton (R Eley, 2006), Minsmere (R Harvey, 5.viii.2006; R Harvey & J Higgott, 12.viii.2006), Ipswich (J Cawston, 5.viii.2006), Landguard (N Odin, 6.viii.2006), Bawdsey (M Deans, 13.viii.2006), Hollesly (N Mason, 14.viii.2006), Eye (P Kitchener, 23.viii.2007)

Wingspan details : Forewing 15-18mm, Wingspan 30-40mm

Identification

Confusion species
    AdultNi Moth, Trichoplusia ni
Silver Y, Autographa gamma

Compare confusion species
    Adult

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Bawdsey, Suffolk (12.viii.2006) © Matthew Deans

Life history chart
JFMAMJJASOND
larval diapause larval diapause larval diapause larva larva larvapupaimago imago ovaimago larva larval diapause larval diapause larval diapause

Further Photographs

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Tromiebridge Meadow, Inverness-shire (16.vii.2010) © Matthew Deans
Tromie Meadows, Insh Marshes RSPB Reserve, Inverness-shire (24.vii.2011) © Neil Sherman
Ex larva swept from Heather - Blar Mor, Inverness-shire (vi.2014) © Neil Sherman
 
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Swept from Heather - Blar Mor, Inverness-shire (11.v.2014) © Neil Sherman