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14.013 ~ 0276 ~ Bucculatrix demaryella ~ Birch Bent-wing
UK Status

Resident. Found throughout the British Isles but more common in the western counties.

Montgomeryshire Status

A couple of records.

Wingspan :   M & F, 8-9mm.

Confusion species

B. ulmella.
Flight time & Voltinity (Univoltine)


Open woodland, moorland, heathland and boggy areas.


Birch, hazel and sweet chestnut.

Lifestage data

Leaf miner. Eggs laid on underside of leaf. Larva mines narrow contorted gallery then straighter, later eating a window on either side of leaf. Pupates in a cocoon spun amongst detritus.
Montgomeryshire photos

Photo by DB, 3rd July 2017, Bryn yr Ysbyty
Confirmed by gen. det.