Meck and Weamer team up to provide a concise overview of the most important hatches on Pennsylvania trout streams. This handy guide includes detailed hatch charts, color photos of each insect, and recipes and photos of the authors' recommended fly patterns for each hatch. Individual entries provide essential information such as common and Latin names, size range (hook and natural), and time and date of emergence. The authors provide in-depth descriptions of all life stages of the insect, emergence time and date, behavior, tactics, and the premier streams in the state to find the best hatches. Meck's intimate knowledge of the hatches around the state combined with Weamer's penchant for the perfect pattern make this a must-have reference.