This is the same as the Caddis Sparkle Pupa but with a metal beadhead for additional weight. The Caddis Sparkle Pupa pattern has several design features that work very well in mimicking emerging caddis. The yarn body and tail look like the translucent shuck, while the yarn also traps air when casting, and releases the bubbles when underwater to indicate life. The elk wing and dark peacock head add more realism. Fish this dead drifted or swung on a tight line.