Polly Rosborough's Casual Dress Nymph
Dating from 1932 this big bruiser of a fly works nice on our rough and tumble Adirondack waters. I think it resembles in its smaller sizes a cased caddis and its bigger sizes possibly a streamer or big nymph. Whatever this oldie, but a goody, represents it deserves a spot in your fly box next spring. 

Also, it's not too tough to tie with natural, easy to get materials. It also incorporates a dubbing loop which might be new to some, but is a must have trick in the fly tiers tool bag. This fly is also a good one for youngsters to try out once they have a little experience around the vise.

Pattern Recipe & Tying Instructions
Hook: streamer or long shank nymph hood sizes 4 – 10 weighted or not
Thread: black or brown in 6/0
Tail: muskrat hairs – thick bunch with guard hairs intact
Rib: none
Body:  dubbed gray muskrat
Thorax: muskrat with guard hairs in dubbing loop
Hackle: none
Wing: none
Head: ostrich or peacock herl
Tying Notes:
Mount your hook and if you want it weighted use the lead towards the front or eye of hook

Tie in the tail making sure it is bushy and has plenty of guard hairs.

Dub a tapered body of gray muskrat hair. Leave enough room, about 1/3rd back from eye, to finish the thorax.

Using a dubbing loop tool or if you are coordinated a dubbing loop in your hand and pack it with muskrat leave plenty of guard hairs in it. Spin the loop tight and then wrap a few turns forming a bushy collar.

With your fingers stroke the hairs back and then tie the herl in for the head.

Tie it off and go fishing.

This fly works best if you take a brush or Velcro tool and rough it up before you fish it to give it extra movement in the water.