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Witch Hazel Cone Gall Aphid

Hormaphis hamamelidis


These galls are caused by tiny aphids. Their host is Witch Hazel (Hamamelis virginiana).

They are easily recognizable by a red conical gall structure. This gall, which are rich in nutrients, provide both food and shelter for the female aphid.


Spotted growing on witch hazel leaves in a mixed forest.

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Christine Y.
Spotted by
Christine Y.

Connecticut, USA

Spotted on Jun 24, 2018
Submitted on Jun 26, 2018

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