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16.004 ~ 0427 ~ Yponomeuta cagnagella ~ Spindle Ermine
UK Status

Resident. Widespread throughout Britain as far north as Aberdeen.

Montgomeryshire Status

Found from several sites across the county, probably under-recorded

Wingspan :   M & F, 19-26mm.

Confusion species

Y. padella and Y. malinellus.
Flight time & Voltinity (Univoltine)


Especially on calcareous soils.



Lifestage data

Shoot miner/web former. Eggs laid in a cluster of 50-100 under a protective covering on the foodplant. Larva first mines the shoot, then feed gregariously in a web. Pupates gregariously in the web.
Montgomeryshire photos

Photo by PRW, 8th Aug 2008, Commins Coch
Pic shows mating pair.

Photo by MDH, 10th July 2010, Llanfyllin