Just a quick note on this genus as there has been some interest recently with Caryocolum alsinella being recorded. The genus is hard to identify to species on external characters, though having said that C. alsinella is the smallest which helps. C. marmorea is the most frequently seen species in the Brecks and Sandlings but others occur occasionally. C. viscariella larvae feed on the campions and is found on Sea Campion on the salt-marsh as is C. vicinella. There is also an image of C. vicinella on the Suffolk Moths web site. C. fraternella is also on the web site and is one I have not seen. C. proxima has turned up for me on a number of occassions and I think it may be immigrant. All the darker species can only reliably be identified by dissection. The image below is for comparison. C. alsinella was caught and photoed by Paul Kitchener, all others by me except that the C. vicinella was captured by Matthew Deans.
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Thanks Raymond for that summary and montage. Until this year I wasn’t aware that any species of Caryocolum was being seen regularly in Suffolk.