Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
[cite:650027]
excellent resource, although the name of the site is a misnomer: actually, it's a set of several separate projects designed to cover eventually all the living organisms.
http://www.taxapad.com/index.php

current URL
looks like this one has been relegated to the Internet Archive
https://web.archive.org/web/20180906195542/http://www.ichneumonoidea.name/

but its taxapad link appears dead