I don’t know if W.C. Stewart had yellow sallies or sulphurs on his wee Scottish burns. But we have them here in the States, and Stewart’s Dun Spider does a bang-up job of imitating those hatches. Try fishing this on a small stream as a dropper off a bushy dry — or as a dry-wet tandem during a sulphur emergence. (You can thank me next time you see me.)
Every fly tier has a good supply of dotterel on hand…uh…hold on…dang! Turns out, not so much, even in Stewart’s time (mid-19th century). You can substitute with webby dun hen, or heed the sage advice of the man himself:
Stewart’s Dun Spider
Hook: 14-15 (from Leisenring). I used a Partridge SUD2 #14.
Hackle: Dotterel (I used a feather from the inside of a starling wing)
Body: Working silk
Tying Notes: The silk body should cover only the front half of the shank. Select a feather with fibers about as long as the shank. To make a more durable fly, Stewart suggested twisting the hackle around a silk tag before winding. Here’s how I did that: Start the silk at the head, winding rearward. Leave a 3″ tag about 3/4 of the way down the body. Continue winding the working silk. At the halfway point of the shank, proceed back toward the head. When you get to the silk tag, tie in the feather at its tip, and continue winding your working silk toward the head. Now, twist the feather around the silk tag, taking care not to break the spine (starling is fragile!). If you look closely at the photo, you can see the silk reinforcement around the spine of the feather. Wrap the feather toward the head, 3-4 turns, preening the fibers so they don’t get covered (a bodkin or needle may help). Tie down the feather and whip finish.