Cobb County Government
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back button20x21Back to Macroinvertebrates

Taxonomy is a hierarchical system used to categorize living organisms into groups with similar anatomical characteristics, as follows:

    alt Phylum
    alt Class
    alt Order
    alt Family
    alt Genus
    alt Species

The Cobb County Stream Monitoring Program identifies collected specimens to the genus level and uses the population data in multi-metric calculations (analytical computations used to evaluate components of the macroinvertebrate community). Results are used to interpret effects of pollution exposure, habitat stability, and food supply.

For the purposes of watershed assessments, we identify aquatic insects belonging to the orders of Coleoptera (beetles), Diptera (true flies), Ephemeroptera (mayflies), Megaloptera (fishflies, alderflies and dobsonflies), Odonata (dragonflies), Plecoptera (stoneflies) and Trichoptera (caddisflies).

The Cobb County Stream Monitoring Program uses the following taxonomic keys when identifying aquatic macroinvertebrates:

    alt Aquatic Entomology - The Fishermen’s and Ecologists’ Illustrated Guide to Insects and Their Relatives by W. Patrick McCafferty

    alt An Introduction to the Aquatic Insects of North America edited by R.W. Merritt and K.W. Cummins

    alt Aquatic Insects and Oligochaetes of North and South Carolina edited by Brigham, Brigham and Gnilka

    alt The Water Beetles of Florida by J.H. Epler

    alt Identification Manual for the Caddisfly (Trichoptera) Larvae of Florida by Manuel L. Pescador, Andrew K. Rasmussen, and Steven C. Harris