Northern Prairie Wildlife Research Center
Usually yellow to yellowish green; subdorsally and laterally distinct paired white spots; tan head; black prothoracic shield. This species is a pest of coniferous forests in the western United States. It is very common on Douglas-fir, grand fir, and Pacific silver fir, during May and June.
U.S. Department of the Interior |
U.S. Geological Survey
URL: http://www.npwrc.usgs.gov/resource/insects/catnw/pht75.htm
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Page Last Modified: Thursday, 03-Aug-2006 11:39:25 EDT
Menlo Park, CA [caww55]
