Another Hawthorn Gall

Following on from the recent post about Phyllocoptes goniothorax galls on the leaf edges of hawthorn, here is another gall on the plant.  Familiar enough to have a common name (Hawthorn Button-top Gall), the gall consists of a thickened terminal bud with a cluster of distorted leaves. Known more formally as Dasineura crataegi, the gall former is a midge and inside the gall are orange larvae.


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