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Incurvaria koerneriella (Zeller, 1839)

A very local species in Belgium, nowadays confined to the limestone area in the province of Namur.

The young larva makes a circular blotch mine in the leaves of Fagus sylvatica, sometimes on Quercus or Tilia. Then it falls to the ground in a case cut from the blotch. This case is subsequently replaced by bigger ones as the larva grows. The caterpillar then eats dead leaves. It hibernates fully-fed in that case. Pupation in the case amongst leaf-litter.

The adults fly from April till the end of May. The moths are active during the day.


Belgium, Namur, Belvaux, 23 April 2005.
(Photo © Chris Steeman)

 
Comments to Willy De Prins or Chris Steeman
© Flemish Entomological Society