No. 4 Great Dark Drone
This fly is found upon the grass in a torpid state, until the sun warms the air, when it takes wing; and afterwards, if there be a breeze, it is found upon the water. They are of great variety of color, but the black is the most common.
Imitation
Body.—Black mohair spun thickly on black silk.
Wings.—The dun feather of a mallard wing. The wings lie flat upon its back, and the upper fibres of the hackle should be cut off.
Legs.—A dark grizzled hackle. This is a late fly.