Adelges cooleyi (Hemiptera: Adelgidae) Cooley Spruce Gall Adelgid Deming, Whatcom County, Washington September 10, 2012 Old adelgid gall -- the mature nymphs emerged probably a month or so before this image was taken, through the holes visible near the needle attachments. Host is Sitka spruce (Picea sitchensis).
Old adelgid gall -- the mature nymphs emerged probably a month or so before this image was taken, through the holes visible near the needle attachments. Host is Sitka spruce (Picea sitchensis).