Trout and grayling feast on mosquitoes hatching on the water surface. Some of them do not make the transition for pupa to adult and drown. They then become fish food.
WET FLY PATTERNS. Hook size 12 14 - $US each
I hate mosquitoes. When they stick their nose into your skin and suck your blood its painful but the worst period is the following two days when the bite becomes itchy. You so desperately want to scratch but know what will happen. It is torture from hell. In some areas trout seem to prefer to eat midges that the larger mosquito therefore this insect has been rather over looked by fly fishermen. These insects do fall into the water and get trapped in the surface film. The prospect of a bigger meal can cause the trout to attack. If you are waiting for a midge or mayfly hatch then tie on a mosquito and give it a try.