The Moths of Suffolk
1720 Gem, Orthonama obstipata, (Fabricius, 1794)

National Status : Immigrant

Local Status : Immigrant (SMP Status 2)

Flight Period : May be seen April to November

Larval foodplants : Larvae are little known in the wild

Morley's Final Catalogue : No more than two specimens seem to be known with us. One taken at Bury by Nurse, and misnamed Bolitobia fuliginaria (Ent. 1878, 321); and a second that was attracted to electric light in the middle of Ipswich on 5 September 1893 (Mly).

Wingspan details : Forewing 12-14mm, Wingspan 18-21mm

Identification

Confusion species : None


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Ipswich, Suffolk (vii.2002) © N Sherman

Flight chart
JFMAMJJASOND
54 18 18 100 36

Life history chart
JFMAMJJASOND
imago imago imago imago imago imago imago imago no data

Further Photographs

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Bradwell, Suffolk (11.x.2010) © Keith Knights
Female - Ipswich, Suffolk (vii.2005) © Neil Sherman
VC25, Burgh Castle, Suffolk (13.x.2010) © Brian Jones
 
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Female, ex ova laid by female trapped - hatched Oct 2015 - Bawdsey, Suffolk (11.ix.2015) © Neil Sherman
Male, ex ova laid by female trapped - hatched Oct 2015 - Bawdsey, Suffolk (11.ix.2015) © Neil Sherman
Male, ex ova laid by female trapped - hatched Oct 2015 - Bawdsey, Suffolk (11.ix.2015) © Neil Sherman
 
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Male, ex ova laid by female trapped - hatched Oct 2015 - Bawdsey, Suffolk (11.ix.2015) © Neil Sherman
Larva (brown form) reared on Knotgrass - exa ova laid by trapped female - Bawdsey, Suffolk (11.ix.2015) © Neil Sherman
Larva (green form) reared on Knotgrass - exa ova laid by trapped female - Bawdsey, Suffolk (11.ix.2015) © Neil Sherman