Green Rock Worms or Net-Spinning Caddis?
The green rock worm nymph is one of my all time favorite nymph patterns. I have found it effective every month of the year on streams throughout the West and beyond. But why? While green rock worm caddisflies (family Rhyacophilidae; genus Rhyacophila sp.) are common in many trout streams across North America, they aren’t found everywhere in large numbers and their abundance tends to vary seasonally. ..