Head Brown permanent marker (wisp of marabou fluff)
How to tie it
Mount the hook, start thread, and run to the bend.
Tie in a length of Antron sparkle yarn under the shank and another over the top at the bend, these form the gas-bubble sheath.
Dub a plump amber body forward to the 70% mark.
Draw the lower and upper sparkle strands forward over the body to form a translucent sheath and tie off; do NOT trim tight, tease the fibers into a loose halo around the body to mimic the pupa's gas bubble.
Trim the halo to about a gap-width and leave a short sparkle tuft trailing at the tail.
Tie a sparse overwing of natural deer hair, tips reaching the hook point.
Spin a wisp of brown marabou as a fuzzy head and whip finish.