McGee's Flymph PMD

         Flymphs

• term ‘flymph’ describes the transitional hatching stage between nymph (or pupa) and dun or adult insect
• introduced (1941-1979) by Hidy and Leisenring - influenced by Skues, called “the American Skues”
• fished throughout water column with movement e.g. the ‘Leisenring lift’
• shaggy body materials trap gas bubbles – may mimic gas bubbles trapped beneath exoskeleton of pupa and nymph that facilitate ascent and eclosion.
• Patterns