The Moths of Suffolk
1913 Canary-shouldered Thorn, Ennomos alniaria, (Linnaeus, 1758)

National Status : Common

Local Status : Resident (SMP Status 1)

Distribution and abundance : Widespread and common

Habitats : Woodland, scrub, heathland, fen and gardens

Flight Period : Single-brooded; late July to mid-October

Larval foodplants : Downy and Silver Birch, Alder, limes and elms

Morley's Final Catalogue : This has always been a quite common species throughout the County in August, extending to Gorleston; not frequent at Monks Soham light.

Wingspan details : Forewing 16-20mm, Wingspan 38-42mm

Identification

Confusion species
    AdultAugust Thorn, Ennomos quercinaria
Dusky Thorn, Ennomos fuscantaria
September Thorn, Ennomos erosaria

Compare confusion species
    Adult

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Ipswich, Suffolk (vii.2002) © N Sherman

Flight chart
JFMAMJJASOND
22 100 21

Life history chart
JFMAMJJASOND
ova ova ova ova larva larvapupa larvapupaimago imago imago ovaimago ova ova

Further Photographs

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Ipswich, Suffolk (2.ix.2010) © Neil Sherman
Rendham (16.viii.2002) © L Gregory
female - Norfolk (12.viii.2009) © Lee Gregory
 
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Ipswich, Suffolk (2.viii.2016) © Paul Kitchener
Ipswich, Suffolk (2.viii.2016) © Paul Kitchener