Water Boatmen Fishing Flies

At close range the Corixa or waterboatman is a striking creature, its back is beautifully marked with dark brown or black dashes with bands of gold. It’s air supply (a small bubble on the underside of its abdomen) when at full capacity looks like a bead of mercury held between the legs. These go up and down to a maximum depth or 6 to 8 feet on the edge of stillwaters.