When I started trying to identify the aquatic insects, such as the Epeorus pleuralis, in the Shenandoah National Park, I was very fortunate to have Art Flick’s help. Art was a special friend of mine that lived in West Kill, NY. I collected samples, sealed them tightly in vials of 10% alcohol and packed them securely to send to Art. The only book I had at the time was The Mayflies of Illinois by Dr. B.D. Burks.
I discovered the Epeorus pleuralis was our first major mayfly which was present in large numbers. When the water temperature held at 40 degrees for four days, usually by the middle of March, some of the nymphs were reaching full size. Going to the lower sections of the riffles and checking the downstream sections of the flat rocks and ledges, I was able to locate many of these nymphs. Using a 35mm camera with a macrolens, I was able to get some good Epeorus nymph photos.
By studying these photos and the nymphs I saw the gill covers were the most important part of the natural nymph I should consider duplicating in the nymph I planned to tie. Fortunately the natural Hare’s Ear dubbed on loosely and ribbed with a fine gold wire produced a body which gave the impression of the pulsating give covers in the water. My final nymph– the Mr. Rapidan Bead Head.
Tying Materials for the Mr. Rapidan Bead Head Nymph
Hook: Mustad 3906B, sizes 12, 14
Thread: 6/0 Tan Prewaxed Nylon
Body: Hare’s Ear
Hackle: Speckled Indian Hen Back
Tail: Ringneck Pheasant Tail Fibers
Rib: Fine copper wire
Weight: Gold Bead to match hook size