The Sparkle Quill Caddis Pupa, originated by Mike Mercer, is an effective and fun to tie caddis pupa pattern.

Sparkle Quill Caddis Pupa
Hook: Grip 14723BL #14
Thread: Benecchi 12/0, tobacco
Veiling/wing: Z-lon, silvery grey
Abdomen, over: Goose biot, dyed olive
Abdomen, under: Argentinean hare, dyed olive
Legs: Brown partridge barbs
Antennae: Bronze mallard barbs
Thorax/head: Hare's ear

Video here - please view in HD, if able:

Hans W