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16.015 ~ 0437 ~ Swammerdamia caesiella
UK Status

Resident. Widely distributed and often common throughout the British Isles.

Montgomeryshire Status

First found in 2014 in the north of the county in the Lake Vyrnwy area.

Wingspan :   M & F 9-13mm.

Confusion species

Paraswammerdamia lutarea.
Flight time & Voltinity (Bivoltine)


Heathland and open woodland.



Lifestage data

Web forming. Eggs on foodplant. Larva lives in a web, feeding on top of leaf. Pupates in dense white cocoon on or near ground.
Montgomeryshire photos

Photo by DB, 24th June 2014, Lake Vyrnwy