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4.036 ~ 0072 ~ Stigmella myrtillella ~ Bilberry Pigmy
UK Status

Resident. Widely distributed throughout the British Isles.

Montgomeryshire Status

First found in the south of the county in 2015 at Glaslyn Nature Reserve.

Wingspan :   M & F 4-5mm.

Confusion species

Many species in this group are very similar. One of the best ways of separating them is to examine the type of leaf-mine.
Flight time & Voltinity (Bivoltine)


Wherever the foodplant is found.


Bilberry and bog bilberry.

Lifestage data

Leaf miner. Eggs laid on underside of leaf. Larva first forms a gallery mine, later an irregular blotch. The cocoon is brown.
Montgomeryshire photos