http://www.public.iastate.edu/~entomology/ImageGallery.html
This site is a large image gallery of insects. Included are pictures of mosquitoes of the Midwestern U.S., a beetle movie, tick movies, still images of ticks with such notables as the Lone Star Tick, images of lice and a tick dissection sequence. All images are of very high quality and are viewable by JPEG after downloading.