The Moths of Suffolk
1911 Large Thorn, Ennomos autumnaria, (Werneburg, 1859)

National Status : Notable Nb

Local Status : Resident (SMP Status 3)

Distribution and abundance : Local and infrequent

Habitats : Broad-leaved woodland and scrub

Flight Period : Single-brooded; August to September

Larval foodplants : Various broad-leaved trees and shrubs; birches, Alder, Hazel, hawthorns, Blackthorn, Plum, Cherry, Apple, oaks, Sycamore and poplars

Morley's Final Catalogue : Not recorded in Suffolk in Morley's time he comments 'Large Thorn is so rare as to be doubtfully indigenous'

Aston's Additions : Female of this new species taken at light by Mr. Garrett-Jones at Flatford on 22.ix.1946 (Trans. S.N.S., Vol. VII, pt. 1. p. 26. Mr. Chipperfield next took it at Stowmarket on 2.x.1952 and 3.x.1954 (Trans. S.N.S., Vol. IX, pt. 1, p. 53). More recently it has been taken at Waldringfield by Mr. Alfred Waller.

Wingspan details : Forewing 21-28mm, Wingspan 49-64mm

Identification

Confusion species
    AdultAugust Thorn, Ennomos quercinaria

Compare confusion species
    Adult

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Thurston (12.ix.2002) © P Bryant

Flight chart
JFMAMJJASOND
14 85 100

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

Further Photographs

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Bred from female trapped in 2001 - Ipswich, Suffolk (vi.2002) © N Sherman
Bred from female caught in 2001 - Ipswich, Suffolk (v.2002) © N Sherman
Kent (viii.2005) © Stuart Read
 
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Kent (viii.2005) © Stuart Read
Bawdsey, Suffolk (22.viii.2006) © Matthew Deans
Bawdsey, Suffolk (ix.2009) © Matthew Deans
 
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Bawdsey, Suffolk (ix.2009) © Matthew Deans
Maidscross Hill, Lakenheath, Suffolk (30.viii.2013) © Neil Sherman