Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
[cite:388934]
Taxonomic data base (with distribution info provided for every taxon included) maintained by people at the Senckenberg Deutsches Entomologisches Institut, M√ľncheberg, Germany, and adopted as BG's default taxonomy reference. See also discussion here.
"...the best thing to check for current usage of names" (Dr. Smith's comment)

authors: Blank S.M., Groll E.K., Liston A.D., Prous M., Taeger A.

Older version

i still haven't figured out how to use it...
http://sdei.senckenberg.de/ecatsym/