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Flyfishing Entomology
 

Life Stage Characteristics
 

Diptera

True Fly

 Larva

§         No tails

§         Antennae minute

§        No legs; body has the general appearance of a segmented tube

§        Instars: 3-4

Pupa

§         Head, thorax, and wing pads clumped together

§         No tails

§         May have filamentous gill fibers on top of thorax

 

Adult

§         No tails

§         Antennae not more than 2-3 times width of head in length

§         Only first pair of wings developed; second pair of wings evolved to short stalks, called halteres
True Flies include (26) aquatic families.   However, chironomids (illustrated above) are of most interest to trout.  Chironomid larvae have a body with the general appearance of a segmented tube with a pair of fleshy prolegs at both ends.

Created: 08/04/2004   Last modified: 08/25/2006    www.FlyfishingEntomology.com