The following websites contain useful information regarding bark beetle biology as well as case studies detailing bark beetle infestations. 

1. Bark Beetle Images:

http://ag.arizona.edu/extension/fh/bark_beetle.html

2. Technical paper on Arizona Ponderosa Pine Bark Beetles:

http://www.fs.fed.us/rm/pubs_other/rmrs_2009_negron_j001.pdf

3. Review of the Western Pine Bark Beetles:

http://ag.arizona.edu/pubs/natresources/az1300.pdf

4. Economic Impacts of Bark Beetle Infestations:

http://www.nytimes.com/2008/11/18/science/18trees.html

5. Lesson Plan Ideas for Grades 2-3:

http://www.fs.fed.us/r2/bark-beetle/grade23.doc

6. Lesson Plans Ideas for Grades 5-6:

http://oceanservice.noaa.gov/education/pd/climate/activities/casestudies/

westmountforeststudent.pdf

7. Using Sound to Disrupt Bark Beetles:

http://www4.nau.edu/insidenau/bumps/2010/2_3_10/beetle.htm

8. Bark Beetles in the news:

http://www.rapidcityjournal.com/news/article_a4394a24-24e5-11df-bcb9-001cc4c002e0.html

9. Commercial Harvesting Considerations:

http://www.edsonleader.com/ArticleDisplay.aspx?e=2502409

10. Federal Responses to Bark Beetle Infestations:

http://www.vaildaily.com/article/20091208/NEWS/

912089995/1078&ParentProfile=1062