Derived from the classic Trout Stream Insects: An Orvis Streamside Guide , this fully revised text focuses exclusively on those mayfly species of most importance to fly fishers. The numerous color photographs, drawings, and insect-size silhouettes help the angler identify what’s hatching and compare that natural insect to what’s in the fly box. Designed to slip easily into a jacket or vest pocket, the trout angler will make much use of this book. Based on the popular title An Orvis Streamside Guide to Trout Stream Insects, this revised and updated text focuses on the mayfly species essential to anglers in North America. Veteran fly-fishing author Dick Pobst, who wrote Trout Stream Insects in collaboration with the late Carl Richards, gives the reader the keys to identifying numerous mayflies and determining the correct patterns for the different life stages--nymph, emerger, and adult--to fool trout. Published in a handy pocket-size, this book is intended for field use, with numerous color photos and insect silhouettes to help the angler determine what mayfly species are present at streamside. Color-coded hatch charts forecast the appearances of a wide variety of species so the angler can figure out when certain patterns should be in the fly box. Tuck this book in your vest and go. Dick Pobst wrote the acclaimed Trout Stream Insects , and The Caddisfly Handbook , with the late Carl Richards -- the Orvis "Streamside Guide" on which this wholly revised, new caddis title based. He is also the author of Fish the Impossible Places. A former fly-shop proprietor. Pobst is now retired and spends most of his time casting to trout. He lives in Ada, Michigan.