Midges make up a large portion of the trouts diet during pretty much all their life cycles. Adult midges that are crippled, spent, or struggling in the surface film typically have wings and legs splayed. Often even the abdomen is partially submerged while the rest of the insect is still struggling to get out of the water. Unlike an emerger the fully formed adult is simply stuck in the film and in escape mode with a lot of fluttering and awkward contortions using its legs as pry bars. If you have read the book Modern Midges by Takahashi and Hubka it's a great resource that illustrates this concept in the adult phase in many frames. The adult midge struggling in the surface film triggers a trout to feed because they do not have to use a lot of energy to simply tip and sip this morsel. Similarly the same notion holds true for mayfly spinners. They dial in on these insects because they are vulnerable and easy pickings. The following pattern, the Adult Spent Midge, is somethi...