Mugwort (Artemisia vulgaris) can be found in unmanaged grassland and its distinctive flower-spikes are easily seen on road verges. Yesterday, whilst driving along the M62, I noticed that Mugwort grows alongside the motorway almost to the highest point at Junction 22.This "masked" caterpillar was found on Mugwort growing at Apperley Bridge VC64 on 23rd July 2010.
It grew quickly over the next couple of weeks before pupating and emerging as a Silver Y moth (Autographa gamma) on 21st August.
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