The Moths of Suffolk
2362 Butterbur, Hydraecia petasitis, Doubleday, 1847

National Status : Local

Local Status : Resident (SMP Status 3)

Distribution and abundance : Scarce

Habitats : Riverbanks, ditches, damp fields and marshes

Flight Period : Single-brooded; August to early September. Suffolk records have been mid-July to mid-August

Larval foodplants : Butterbur

Records : Minsmere (C Anderson, 1994-5; J Chainey 28.vii.1995), Needham Market (C W Pierce, 1965 & 1973), Eye (P Kitchener, 2001 & 7.viii.2007), Dunwich Heath (M Cornish, 14.viii.2002), Rendham (M Deans, 24.vii.2003)

Morley's Final Catalogue : Certainly very local, but not so rare as was thought before 1890. Often singly at electric lights in Ipswich town (Mly, Pyett, Baylis, Platten teste W. H. Harwood); Waldringfield, at light in August 1931 (Wlr); taken several, and found work of larvae at Needham (L) ; larvae at Blaxhall believed to be this species (Hkr) ; abundant signs of its work in Butterburr-roots at Bury (Norgate, post 1890).

Wingspan details : Forewing 19-23mm, Wingspan 44-50mm


Confusion species
    AdultRosy Rustic, Hydraecia micacea

Compare confusion species

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Rendham (24.vii.2003) © M Deans

Flight chart
100 100

Life history chart
ova ova ova larva larva larva larvapupaimago pupaimago ovaimago ova ova ova

Further Photographs

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Eye, Suffolk (7.viii.2007) © Paul Kitchener