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49.133 ~ 0968 ~ Cochylis nana
UK Status

Resident. A widespread and fairly common species in Britain, more scarce in Ireland.

Montgomeryshire Status

Found at Cors Dyfi in 2011 and at Guilsfield a few years later.

Wingspan :   M & F,9-13mm.

Confusion species

Flight time & Voltinity (Univoltine)


Wherever the foodplant is found.


Silver birch catkins.

Lifestage data

Eggs laid on catkins. Larva lives and feeds within the catkins. Pupates in a silken cocoon attached to the trunk of the tree.
Montgomeryshire photos

Photo by MW, 20th May 2011, Cors Dyfi

Photo by SOS, 2nd June 2016, Guilsfield

Photo by SOS, 25th May 2017, Guilsfield