family: Saliaceae (willow family)

Members of the Poplar tree family, such as Cottonwood, are found in wet environments, and are a favorite of gall midges and flies. Poplar shoots are favored because they grow rapidly and create a very suitable environment for insects to manipulate the young cells.

Click 'compare galls' link to see more poplar galls and to compare them with other galls.

Below is an example of a poplar gall: