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4.099 ~ 0034 ~ Ectoedemia occultella ~ Large Birch Pigmy
UK Status

Resident. Widespread and common throughout Britain.

Montgomeryshire Status

Scattered records from around the county.

Wingspan :   M & F, 6-7mm.

Confusion species

Many species of Ectoedemia are similar. A good way of separating them is to examine the type of leaf-mine in the foodplant.
Flight time & Voltinity (Univoltine)


Many habitats with birch.



Lifestage data

Leaf miner. Eggs laid on the underside of the leaf. Larva forms a blotch with a dark spot in the centre. Pupa spun on the soil surface in the litter. (Mines of some species are similar, care is required with identification).
Montgomeryshire photos

Photo by ADL, 18th Oct 2011, Dolforwyn Hall

Photo by ADL, 18th Oct 2011, Dolforwyn Hall