Subject: Unknown aquatic macroinvert
Location: Huntington, Indiana
October 11, 2014 9:27 am
The college ecology class I teach found this critter while sampling a small, wooded creek on our campus. I’ve shown the picture to a couple of aquatic ecologists I know and none of them have been able to identify it yet. The best we can come up with is that it is some sort of free living caddisfly (Trichoptera). The “shell” looks a lot like an aquatic isopod though! It definitely had only 6 legs. ~1.5-2 cm in length.
Signature: Collin Hobbs
We haven’t a clue as to the identity of your creature, but we wonder if it might be the larva of an aquatic beetle because it really resembles a Firefly Larva or a Netwing Beetle Larva. We are not certain if there are any aquatic beetle larvae that look like this, but we believe that is a more likely candidate than the larva of a Caddisfly. We will try contacting Eric Eaton to see if he can provide any information.
Eric Eaton confirms our identification
On my way out the door, but….
Looks like a firefly larva to me, and there are species that prey exclusively on aquatic snails….