Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
[cite:455324]
A detailed review covering biology, hosts, distribution, taxonomy, spread potential, economic impact of U. gigas and other aspects.
http://www.aphis.usda.gov/plant_health/plant_pest_info/pest_detection/downloads/pra/ugigaspra.pdf

Dead link
It seems the link no longer goes to the pdf. Since we don't have true U. gigas in the US, it probably would have applied to the U. flavicornis guide instead.

 
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