http://www.forestryimages.org/browse/subimages.cfm?SUB=425
http://www.fs.fed.us/r1-r4/spf/fhp/field_guide/44sqaptchmth.htm
http://ag.arizona.edu/yavapai/anr/hort/byg/archive/sequoiapitchmoth.html
http://www.for.gov.bc.ca/hfp/publications/00198/Sequoia_pitch_moth.htm
http://www.humboldt.edu/~dll2/pitch/pitmoth.html