Major Insect Families

    

Caddisfly larva

    To further simplify the detailed and complicated subject of entomology in our effort to educate readers about the fundamental relationships between "insects" and fish, we consolidate our presentation of "insectology" into 5 main classes of insects: 

  1. Mayflies

  2. Caddisflies

  3. Stoneflies

  4. Dragon & Damsel flies

  5. Terrestrials

     It is these 5 "classes" of aquatic insects that are the most important to freshwater fish.  They are prevalent throughout North America and particularly abundant, and available, to fish in the U.S. 

Montana's Big Hole River supports all 5 insect types

    These classes are a major food source for many of the most popular species of fish sought by flyfishers: all species of trout, bass and sunfish are dependent upon them for survival.  Hence, our understanding and knowledge of their habits is critical as we strive to imitate them in our attempts to catch fish.  (We cover other freshwater aquatic insects and animals in some detail in this course.  However, in that they are generally not as important to fish as these 5 more prevalent, wide-ranging insect types, we do not devote as much time to them.) 

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