One of the greatest challenges of putting together a website like this, and working with insects in general, is the task of identifying specimens. I have done my best to determine species for each individual, but of course there will be misidentified specimens from time to time. If you believe you've found one, please let me know by email: email@example.com.
Here are some of the websites that I have found useful:
Encyclopedia of Life: http://eol.org/pages/344/overview
Moths of Belize: http://www.mbarnes.force9.co.uk/belizemoths/belizehome.htm
Moths of SE Arizona: http://nitro.biosci.arizona.edu/zEEB/butterflies/Spectacular.html.
Dan Janzen's site with "trial species home pages" for the Sphingidae: http://janzen.sas.upenn.edu/TSHP/English/Sphingidae/Sphingidae_ACG.html
Moth Photographer's Group, Aron Cavosie's Puerto Rico page: http://mothphotographersgroup.msstate.edu/AC-PR/ACindex.shtml
Deforestation study: http://www.nature.com
-- INSECTS OF PANAMA AND MESOAMERICA: SELECTED STUDIES
Key to Lepidoptera families: http://www.zoology.ubc.ca/bclepetal/order%20lepidoptera%20et%20al%20text%20files/order_lepidoptera.htm