NORFOLK BIODIVERSITY ACTION PLAN SPECIES DATA AUDIT ...

Species
Noble Chafer
Gnorimus nobilis
Brush-thighed Seed-eater
Harpalus froelichi
a Seed-eater Ground Beetle
Harpalus melancholicus
New Forest Mud Beetle
Helophorus laticollis
Oxbow Diving Beetle
Hydroporus rufifrons
Blue Plunderer
Lebia cyanocephala
Present
or
absent
in
Norfolk
No. of
records in
database
No. of 1km
squares
recorded
since 1980
Possible other
sources
of data sets
33
Other survey
work
completed or
in progress
Comments
A - - Old county records only (19 th Century) – probable accidental
import. Considered extinct in Norfolk.
Declining - Loss of habitat, especially through the grubbing out
of old orchards and replacement of ancient decaying fruit
trees. Loss of nectar and pollen sources through inappropriate
management of orchard grassland. Use of chemical
pesticides.
P 4 3 Present on a few Breckland sites.
Marked decline in UK - Loss of ruderal communities on
disturbed sand, including field margins. Modern treatment of
arable weeds through herbicide and seed cleaning.
Norfolk Action Plan published February 2007.
A - - Ground Beetle Recording
Scheme
Old county records only (1883). Considered extinct in Norfolk.
Found in coastal sand dunes although also recorded inland.
Marked decline in UK – Habitat loss.
New to national list of BAP priority species 2007
A - - Old county records only (c. 1990). Considered extinct in
Norfolk.
Declining - Water abstraction, damage to headwater drainage
systems, in particular associated with tourist development and
road improvement. Reduction in grazing, resulting in scrub
encroachment.
A - - Old county records only (19 th Century). Considered extinct in
Norfolk.
Marked decline in UK - Loss of unimproved pasture, damage
to lakeside marginal pool complexes, inundation through
P 1 1 Ground Beetle Recording
Scheme
impoundment for reservoirs.
Accidental import in 1998.
Found on scrubby ruderal grassland on fringes of heath.
Marked decline in UK – Reasons unclear.
New to national list of BAP priority species 2007