Answer for
FEATURE CREATURE #22
Water Penny
For more information about the
water penny
check out the following:
Page 365 and 366 of A Guide to Common Freshwater Invertebrates of North America by J. Reese Voshell, Jr.
Page 226 of Aquatic Entomology by W. Patrick McCafferty
http://www.mcps.k12.md.us/schools/westbrookes/macro/waterp.html
http://www.epa.gov/bioindicators/html/waterpennybeetles.html
http://www.sacs.k12.in.us/woodside/techlab/stream/docs/waterpen.htm
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