Mid-Atlantic Aquatic Invertebrates

A family-level key from the Maryland Department of Natural Resources.

• Order Coleoptera

  Beetles

• Order Collembola

  Springtails

• Order Diptera

  True Flies

• Order Ephemeroptera

  Mayflies

• Order Hemiptera

  True Bugs

• Order Lepidoptera

  Butterflies and Moths

• Order Megaloptera

  Alderflies and Fishflies

• Order Odonata

  Damselflies and Dragonflies

• Order Plecoptera

  Stoneflies

• Order Trichoptera

  Caddisflies

• Order Annelida

  Leeches and Worms

• Order Bivalvia

  Clams and Mussels

• Order Crustacea

  Crayfish, Scuds, and Sowbugs

• Order Gastropoda

  Snails

• Upper Midwest Aquatic Invertebrates

  Manual guide to aquatic invertebrates of the Upper Midwest available from the University of Minnesota's Chironomidea Research Group.