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Beech Gall Midge
Mikiola fagi
46.2741, 5.9919
Field Notes
Description:
These are galls on leaves of beech (Fagus sylvatica) tree, caused by larvae of a fly belonging to Cecidomyiidae family - a small dusky-white larvae lives inside, but I did not get a good pic of it. Galls are about 1 cm tall, cream-white in the beginning of their development (pic N° 4) and reddish later on, with pointed ends. In some mountain zones they can considered an important pest for young trees in forests.
Habitat:
Found on beech tree leaves, edges of a mixed forest (oak, beech, spruce and fir) on slopes of Jura range, sloping down to Geneva lake valley. Found on one or two trees.
Species ID Suggestions
Spotted for Missions
Photographed
PublishedOctober 18, 2020
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