Mosquito Larva, Black
Hook: 22 Dry
Thread: 6/0 Black
Body: Black Pearl Krystal Flash
Wind on forward, then back over to bend; tie in two strands Krystal Flash. Advance thread to within an eye's width of eye. Slowly wrap body forward, back, and forward again, allowing flash to flatten as it's wrapped.
Build a thorax: Catch and bind at front with one turn thread; wind thread back one spiral turn; reverse lay flash over top and catch again, advance thread one spiral turn forward, lay flash forward, catch, hitch off, touch head with bodkin point of glue. Trim antennae, most likely closer than it looks in photo.