This is a simple scud or pupae pattern that catches light very well in the water.
Hook: Scud, size 10-16 (here, a size 10)
Weight: Bead head, size to match pattern
Thread: Clear mono
Tail: Marabou, color to match pattern
Body: Silver or gold tinsel along shank, overlaid with larva lace
Different flash colors under larva lace colors will produce a wide array of results. The Clear lace over gold flash on the left has been especially good for me.