Hi guys. I was looking through some books on stonefly nymph patterns and saw that most were tied in a larger sizes. Over this past fall and winter, I seined some stoneflies out of two local streams in NJ and besides getting the large giant black stoneflies, typically seen and tied in pattern books, I also captured what appeared to be smaller #16 and #14 golden stoneflies on the one stream and what appeared to be #20 black stoneflies on the other. I was just curious on how small you guys tie up your stonefly immitations and if there may be a reason for using the larger patterns versus the small. Thanks