Please explore the sites below, especially if 'bug i.d.' is a challenge.

• North America Benthological Society
• Izaak Walton League of America Save Our Streams
• Know Your Macros by Michael Clapp - slideshow about macroinvertebrates and how to identify them
• Name That Bug – Great on-line "Name that Bug" game for basic benthic macroinvertebrate identification with color photos.
• Macroinvertebrate ID Key - by New York DEC
• Benthic Macroinvertebrates in Our Waters – EPA. Picture any links to additional
• Aquatic Insects of American Trout Streams - excellent macroinvertebrate photos
• The Fisher Monk (guide to identifying mayflies for fly fishermen)
• Mayfly Identification by Dr. Corey Leonhard
• An Introduction to Benthic Macroinvertebrates by Kentucky Water Watch Program
• The EPA website offers lots of information and additional links to more about macroinvertebrates and how to collect and identify them.
  http://www.epa.gov/bioindicators/html/benthosclean.html
• NY DEC Macroinvertebrate Key www.dec.state.ny.us/website/dow/stream/index.htm This website is an excellent tool; it has great photographs of different BMI families.
• The Key to Macroinvertebrate Life in the River and Key to Life in the Pond are easy-to-use, single-page dichotomous keys developed by the University of Wisconsin - Extension and useful in identifying aquatic macroinvertebrates. You can download .pdf copies from the UWEX Natural Resources Education Publications webpage or the Wisconsin Department of Natural Resources - Water Action Volunteers: "Other WAV Materials" webpage.
• "Aquatic Insect Fact Sheets" - Downloadable .pdf files from Creek Connections. The "fact sheets" are nicely illustrated and informative. Creek Connections was developed at Allegheny College as a partnership with regional K-12 schools in Northwest Pennsylvania, Southwest New York, and the Pittsburgh.
• Maryland Department of Natural Resources Freshwater Benthic Macroinvertebrates web page provides some basic information about the state's monitoring program. Of special interest might be the Family-level Key to Stream Invertebrates of Maryland and Surrounding Areas.
• "Macroinvertebrate Ecology" created for the Maryland State Envirothon provides an introduction to macroinvertebrate anatomy, life cycle, adaptations, and use in biomonitoring.