Royal Bobesh
Category - Larvae/Scud/Grub
Hook - Any curved style scud hook
Weight - Lead/lead free wire
Thread - Color to match dubbing
Ribbing - Wire, thread or monofilament
Shell back - Scud back, strip of zip lock bag etc
Body - Your favorite color dubbing
Head - Gold tinsel or wire
The basic pattern for fishing with Czech nymph is a fly, in Czech called Bobe? (read Bobesh = Czech nymph)
Czech Nymph and Other Related Fly Fishing Methods - Karel Krivanec