Tiny Baetis mayflies are perhaps the most commonly encountered and imitated by anglers on all American trout streams due to their great abundance, widespread distribution, and trout-friendly emergence habits.
"No absolutes" is a mantra from my Purdue Entomology days. It certainly holds true for most of biology and entomology by extension. Feathers5: Where are you located? General global location is what I'm after. I.e., state, province or country.
never say always when speaking about bugs...