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Photo#517563
sack galls on elm  - Aceria parulmi

sack galls on elm - Aceria parulmi
New Providence, Union County, New Jersey, USA
May 17, 2011
Size: each about 1 cm
finger-shaped galls on upper surface of elm leaves. Some leaves were completely covered in galls, and some galls had a reddish tinge to them. Small indents were visible beneath the leaf.

Moved
Moved from ID Request.

maybe..

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