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Simuliidae (Black Flies) True Fly Larva Pictures

This true fly was collected from Fall Creek on March 30th, 2007 and added to Troutnut.com on April 2nd, 2007.

I strangely enhanced the colors in this picture to highlight the silk thread from which this larva is dangling.  It attached the line to the little tweezers I used to pick it up, and when I lowered it into my little photo tank it was suspended by the line for a while.  I believe some authors have mentioned imitating this line when fishing Simuliidae imitations, but that seems kind of silly given the diameter involved, probably something like a 30X tippet.  Simuliidae (Black Flies) Black Fly Larva from Fall Creek in New York
I strangely enhanced the colors in this picture to highlight the silk thread from which this larva is dangling. It attached the line to the little tweezers I used to pick it up, and when I lowered it into my little photo tank it was suspended by the line for a while. I believe some authors have mentioned imitating this line when fishing Simuliidae imitations, but that seems kind of silly given the diameter involved, probably something like a 30X tippet.

Recent Discussions of this Larva

The more you know.. 2 Replies »
Posted by Phineartz on Jan 16, 2019
Last reply on Jan 17, 2019 by Jmd123
These are always abundant in my stream samples and have even found them wriggling around on my pack after a dunking.. I have always thought they were midge larvae as that is the common assumption I've gathered from local anglers, but due to their size and shape I started to question this. Scouring online resources and comparing photos led me here, where I see they are a different critter altogether. I have never heard of anglers discussing the use of Simuliidae patterns but I'm looking forward to experimenting with them in the future. Thank you for the photos and the resource! -Mike in KY
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