Went looking and found ~

entomologists estimate that over 800,000 insect species have been named and described since Carolus Linnaeus (1707-1778) founded the modern system of nomenclature (genus and species) for all plants and animals...Discovery of a new species of vertebrate is a rare event -- only a handful have been found in the past 20 years.* But millions of undiscovered insect species are still hiding in the soil, in the canopies of tropical rain forests, and even right in our own backyards.* Entomologists describe hundreds of these new species each year, and still estimate that only one-half to one-third of the earth's total insect fauna has even yet been discovered.* In the final analysis, two of every three living species may be insects.
from:
http://www.cals.ncsu.edu/course/ent4...t01/index.html

kinda makes you feel all creepy crawly!

k :-)