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Cherry Gall


A spherical gall that forms on oak leaves caused by the egg laying of a species of gall wasp


 

 

  • Cherry Gall: the rough with the smooth

    Post date: Wednesday, 14 January, 2015 - 00:00

    The cherry gall (Cynips quercusfolii) is the product of the egg laying of a small species of gall wasp. It lays its eggs on the underside of oak (quercus) foliage (folii) and they develop there, sometimes one, sometimes a small collection. They start pale green (like the one I photographed) and become red as they mature and that is when they begin to look like cherries.

    As with similar galls a single 'fruit' has several chambers in it, each with a single larva. When the leaf falls, so too does the gall and the larvae eat their way out and live over winter in the leaf litter before laying eggs in the spring.

    It is interesting that galls on our common English or pedunculate oak are usually smooth but those laid on the introduced sessile oak are rough or warty; I guess that must be something different in the chemistry of the two species of oak?


     

Common Name Cherry Gall
Scientific Name Cynips quercusfolii
Species Group Galls and Deformities
Status
Interest Level
2
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Identification Notes
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Additional Identification Notes
Similar Species

The records for this species have been organised into reports, charts, maps and photos. Click a pic below to see the detail:

Notebook Distribution Map Sites List Some Charts Some Photographs Recent Records Guidance Notes

To see related species click here: 

Galls and Deformities