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Species

Present or absent in Norfolk

Fenn’s Wainscot Chortodes brevilinea

P

Water-dock Case-bearer Coleophora hydrolapathella

P

Basil-thyme Case-bearer Coleophora tricolor

P

White-spotted Pinion Cosmia diffinis

P

Goat Moth Cossus cossus

P

No. of

No. of

Possible other

Other survey

records in

1km

sources

work

database

squares

of data sets

completed or

28

14

BC, Rothamstead Institute

5

4

BC, Rothamstead Institute

53

17

BC, Rothamstead Institute

10

3

BC, Rothamstead Institute

14

10

BC, Rothamstead Institute

recorded since 1980

Comments

in progress

RDB species, occurring only in Norfolk Broads with isolated populations on the Suffolk coast. Found in reedbeds, preferring drier areas and associated with biannual management regimes. Small British population constricted by available habitat, although has shown recent signs of range expansion. New to national list of BAP priority species 2007 Nationally Scarce B Restricted to Broads in association with Water Dock (Rumex hydrolapathum). Marked decline in UK – Habitat loss and degradation. New to national list of BAP priority species 2007 Current UK Species Action Plan. Internationally threatened - Decline in the abundance of the foodplant due to reductions in grazing intensity, particularly as a result of changes in rabbit populations and loss of unimproved Breck grassland.

pRDB species. Current UK Species Action Plan. Marked decline in UK - Death of mature elms as a result of Dutch elm disease. Nationally Scarce B Associated with mature deciduous trees in fens, marshes, riverbanks, parks, hedgerows and woodland edges. Declining – Possibly due to decline in large, mature trees that are required by it’s larvae. New to national list of BAP priority species 2007

45

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