hellgrammite ...I struggled to come up with that word since yesterday; even while I said centipede I was trying to remember that word "hellgrammite" but just now I remembered enough of it to piece it together and get the correct spelling and then I found pics of it. In the back of my mind I knew it was some kind of lure I used for fishing even back when I was a kid, but back then I remember thinking "what kind of fish would eat that creepy thing!"