Trude flies are characterized by a down wing, slanting back over the body, usually made of animal hair and most recently calf tail hair, often white.

What is a Cahill fly?

The Light Cahill Dry Fly. The Light Cahill Flyfishing Dry Fly is a good trout surface fly. From the middle of May to September, depending on where you live, hatches of different varieties of light colored mayflies now commonly known as Light Cahills can be found.

What is a traditional fly?

Traditional flies imitate only certain characteristics of an insect, such as size, color and silhouette. Realistic flies, besides size, color and silhouette, also imitate the other body parts: antenna, tails, eyes, legs, gills, wing pads and abdomen sections.