A couple of years back, I donated some images to the University of Mighigan's Animal Diversity Web. They kept telling me to find names, etc. in ITIS, but I found the coverage of invertebrates was very spotty. I just did a search on "Battus", for example, and came up with no entries. A search of "Papilionidae" shows just two "children", when it should have several genera listed underneath, if I understand it correctly. If I do a search on "Papilio" in the scientific name, I get only three daughter species listed underneath. (These are the same problems I had trying to use it two years ago--incomplete, even for well-known North American species, at least lepidoptera.)

That, said, I hope you can find it more useful than I did. Coverage of dragonflies looks pretty good, and there is some coverage of beetle genera that I looked for. Maybe it is better in covering genera than of species? It is also not clear to me if it is meant to be global, or more North American in coverage. Hard to say. I look forward to you getting some more tidbits out of that system!