The Moths of Suffolk
1665 Grass Emerald, Pseudoterpna pruinata, (Hufnagel, 1767)

National Status : Common

Local Status : Resident (SMP Status 1)

Distribution and abundance : Most frequent on heathy areas, well represented in the Brecks and Sandlings but with scattered records elsewhere

Habitats : Heathland, open woodland, scrub and grassland

Flight Period : Single-brooded; mid-June to August, the occasional second generation reported in the literature from September to October has not been observed here

Larval foodplants : Gorse (Ulex europaeus), Broom (Cytisus scoparius) and Petty Whin (Genista anglica)

Morley's Final Catalogue : Considered to be too widely distributed to localise in 1890. It may be so, but no later records have come in, excepting its occasional occurrence at electric lights in Ipswich during July, and quite rarely at lamps in Monks Soham. None seem noticed on our broad heathlands during recent years.

Wingspan details : Forewing 14-19mm, Wingspan 35-40mm

Identification

Confusion species
    AdultJersey Emerald, Pseudoterpna coronillaria

Compare confusion species
    Adult

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Aldeburgh (28.vi.2003) © A Prichard

Flight chart
JFMAMJJASOND
20 100 12

Life history chart
JFMAMJJASOND
larval diapause larval diapause larval diapause larva larvapupa imago imago imago larva larval diapause larval diapause larval diapause

Further Photographs

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Ipswich, Suffolk (vi.2003) © N Sherman
Ipswich, Suffolk (vii.2004) © N Sherman
Ipswich, Suffolk (viii.2007) © Neil Sherman
 
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Beaten from Broom - Purdis Heath, Suffolk (8.v.2011) © Neil Sherman