DIVERSITY OF MAJOR LIVING GROUPS
Note on source: unfortunately, I (RNH) have lost sight of the source of the following useful diagram. Otherwise, we would of course cite it here. If someone finds it, please notify the website webmaster, and the shortcoming will be corrected.
According to Hays Cummins home page at Miami University in Ohio (- a 2003 version), the figure below was taken from website of the Smithsonian National Museum of Natural History’s Department of Systematic Biology, Entomology. It illustrates the recognized and identified diversity of significant groups. -- elaine
http://jrscience.wcp.muohio.edu/evol03/FinalArticles/Final2InsectDiversityvs.I.html
THE EFFECT OF BACHELOR RESERVE’S SCENE HABITAT AGE ON INVERTEBRATE SPECIES DIVERSITY
Authors: Alex Thompson, Alisha Staton, Kristin Archibald, Lauren Reiter, and Meghan Quigley

Note: Tracheophyta = Vascular Plants; Note also that Arthropods include the Arachnids (4% of the total pie).