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Yponomeutidae

437 (Birch Ermel), Swammerdamia caesiella (Hübner, 1796)

Status and ecology:

National Status: Common

A resident that is well distributed in the far west and on Ashdown Forest, but apparently much less so elsewhere. It generally occurs singly at mv light, occasionally sparingly on heathland and in deciduous woods. It is double-brooded, flying mainly during May and June, occasionally from early April, and again from the second week of August to late September. The larvae feed on birch. (Pratt, 2011).

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attracted to MV light
Partridge Green, 14 ix 2014 Photo: Olly Ellis

Swammerdamia caesiella (Hübner, 1796)

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Distribution map for Swammerdamia caesiella

(Distribution at 1km scale)

 |   | All records

Historic records: pre 1980 |  1980 - 1989 |  1990 - 1999 |  2000 - 2009 |  2010 on |  All

Phenology chart for Swammerdamia caesiella

Phenology: Adult | Larva | Mine

Forms or subspecies:  |   | All records

Historic records: pre 1980 |  1980 - 1989 |  1990 - 1999 |  2000 - 2009 |  2010 on |  All

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