Re: Lunar Underwings - thanks Bill & Peter for your comments. I recorded at my former home in Pylle using a small actinic trap, and in 2004 started L.U. on 16/9 with 9,but never had more than 22 in one night until last one on 8/10.
I moved to my present home in East Lydford in Aug.2005, and still only had the actinic for the L.U. season. They started on 9/9 and continued to 15/10,with several nights with 25 or more, maximum 76 on 2/10. Last year I
acquired a 160w m.v.trap as well as the actinic, and the first L.U. arrived on 9/9 and after a string of wet nights they started in earnest on 19/9 with 47(A) +30(MV);20/9 51+35;21/9 65+72;22/9 59+44;23/9 85+75; 24/9 127+148;
25/9 102+99;26/9 100+171;28/9 38+63; 30/9 26+28; thereafter petering out until last record on 18/10. This year the first arrival was not until 25/9 (1+2) and records have been disappointingly poor with only a few double-fiigure nights,maximum 18+11 on 8/10. I managed 17 on 9/10. As far as habitat is concerned, we are on the edge of the floodplain of the R.Brue with cattle-grazing pasture all around. We have our own 5-acre field which is roughly 1/3 as an orchard/pond/rough grass area, and 2/3 hayfield cut usually in July,but this year not until August due to the wet weather. As L.U. are grass-eaters, there shoud be no difficulties for the larvae around here!!David Evans has suggested that the wet weather has almost certainly affected this year's larvae, and I am sure he is right. It will be interesting to see if things improve next year. Generally this year has been quite poor for both species & individual counts, particularly geometers and immigrants like Silver Y. Hope this info is of interest.