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Brevicoryne brassicae

Captures by the network of traps run by the Rothamsted Insect Survey are shown below:

Brevicoryne brassicae Inverness Dundee Edinburgh Ayr Newcastle FERA, York Preston Kirton Broom's Barn Wellesbourne Hereford Rothamsted Writtle Ascot East Malling Starcross Total
Week ending                                  
07-Apr         0 0   0 0 0 0 0 0 0 0 0 0
14-Apr         0 0   0 1 0 0 0 0 0 0 0 1
21-Apr         0 0   0 0 0 0 0 0 0 0 0 0
28-Apr   0 0   0 0   0 1 0 0 0 0 0 0 0 1
05-May   0 0 0 0 0   0 25 1 0 2 2 4 3 0 37
12-May         0 9   3 480 47 8 18 46 7 6 2 626
19-May   0 0 0 0 7   5 329 48 5 25 103 28 11 1 562
26-May 0 0 0 0 0 2   1 312 50 5 26 4 5 4 0 409
02-Jun 0 0 1 0 0 0   0 2 3 0 5 1 1 1 0 14