Pictures from the Hainault website:
Aculus leionotus, a sort of uneven blister above, erineum beneath. Looks very like what I saw today.
Circular blister on both sides of the leaf. Anisostephus betulinus.
Silver birch hemispherical gall. Cecidophyopsis betulae.
The hairs of the erineum are described a reddish-brown. However I am seeing tufts of white in a similiar situation, could this be just as it develops? Aculus leionotus. I have also seen this, but both species cannot be A. leionotus.
Aculus leionotus, a sort of uneven blister above, erineum beneath. Looks very like what I saw today.
Circular blister on both sides of the leaf. Anisostephus betulinus.
Silver birch hemispherical gall. Cecidophyopsis betulae.
The hairs of the erineum are described a reddish-brown. However I am seeing tufts of white in a similiar situation, could this be just as it develops? Aculus leionotus. I have also seen this, but both species cannot be A. leionotus.
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