The dust that brings the moths....or not

Last night my garden catch was superb in terms of diversity. Numbers of many of the species that have been dominating the trap recently were normal or slightly lower. Mullein was new for the year and very welcome as I tend to only ever see 1 max per year and for some reason it always seems to be just the wings as the local Sparrows seem to have an eye for what to me seems quite a well camouflaged moth. This one was pristine and inside the trap for once. Acleris literana was also new for the garden and I had another Ypsolopha mucronella. There was also a number of other micros including 2 Caloptilia semifascia, Agonopterix subpropinquella, Depressaria chaerophylii (that I failed to photograph the other day and now have another chance to :)), an Eriocrania species (TBI - can make no assumptions as there are not many Oaks in vicinity but there are two birch trees not too far away) and 5 Diamond-back Moths. Were these migrants brought along with the dust, probably not, I have had this species throughout the year in my garden for last two years and the field next to me is full of Rape of which there were lots of volunteer plants dotted about in the field margins over the winter, so I strongly suspect these are locally resident. Marc Botham, Benson