Sunday, 23 December 2012

Light Brown Apple Moth


This male E. postvittana was on my kitchen window last night.



This was the 465th individual of the year, making 2012 nearly 50% better than any other year since I've been trapping in Llandaff North, see table below:


Year Total number
2007 202
2008 163
2009 320
2010 145
2011 185
2012 465

The low numbers in 2010 and 2011 were a result of the cold winters of 2009/10 and 2010/11. Last winter was pretty mild which probably explains the high numbers this year.

The phenology graph below shows two peaks - one in late spring and a larger one in late summer, so it seems to be mainly double brooded here. The spring peak is usually in May (but in the early spring of 2007 it was in April) and the summer peak in August (but last year it was in September). Numbers then drop off but I've record them right up until the end of the year, but never in January or February.





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