The Moths of Suffolk
1112 Bactra robustana, (Christoph, 1872)

National Status : Nationally Scarce B

Local Status : Resident (SMP Status 3)

Distribution and abundance : Restricted to coastal areas

Habitats : Saltmarsh

Flight Period : Single-brooded; June to July

Larval foodplants : In the stems of Sea Club-rush (Scirpus maritimus)

Records : Thorpeness (G C Pelham-Clinton & R M Mere, vii.1965), Landguard Common (N Odin & M Marsh, 1997, 2002-5), Orfordness (J Askins, 2003-4), Shingle Street (SMG, 16.vii.2003), Aldeburgh (SMG, 4.vi.2004), Dunwich (M Deans & L Gregory, 15.viii.2005)

Wingspan details : Wingspan 16-22mm

Identification

Confusion species
    AdultBactra furfurana
Bactra lancealana
Bactra lacteana

Compare confusion species
    Adult

Click to view full size image
Confirmed by dissection - Ipswich, Suffolk (vi.2006) © Neil Sherman

Flight chart
JFMAMJJASOND
100 60 20

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

Further Photographs

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Bawdsey, Suffolk (30.vi.2010) © Matthew Deans
Southwold, Suffolk (28.vi.2012) © Neil Sherman