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Swammerdamia caesiella (Hübner, 1796)

Birch Ermel
16.0150 (B&F: 437)

Swammerdamia heroldella Hübner, [1825]
Swammerdamia griseocapitella (Stainton, 1851)

»Suborder: Glossata
  »Superfamily: Yponomeutoidea
    »Family: Yponomeutidae
      »Subfamily: Yponomeutinae
        »Tribe: Phalacropterygini


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).

Swammerdamia caesiella (Hübner, 1796)
attracted to MV light
Partridge Green, 14 ix 2014
Photo: Olly Ellis
Swammerdamia caesiella (Hübner, 1796)
larva under loose web on birch
nr Stedham Common, 08 x 2011
Photo: Tony Davis

Distribution at 1km scale

Phenology (adult)

Phenology (larval)

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