Caryocolum tricolorella

Only a few records, but doubtless considerably under-recorded.  The distinctive larvae can be found, with patience, by searching quiet lanes and hedgerows in March, looking for spinnings amongst the terminal shoots of Greater Stitchwort Stellaria holostea (it is helpful to make a note the previous year of where the plant can be found).

See also: https://www.gelechiid.co.uk/species/ant-43