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Phyllonorycter klemannella (Zeller, 1850)

A fairly common species in Belgium.

The larva lives on Alnus glutinosa or Alnus incana. It makes a small, round mine between two veins on the underside of the leaf. Pupation inside the mine. The pupa hibernates.

It is not clear whether there are two generations per year or just one. The adults have been observed from the end of April till the end of August, most commonly in the second half of May.

Belgium, Hainaut, Antoing, 28 June 2008.
reared ex. pupa (Photo © Chris Snyers)
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© Flemish Entomological Society