Might want to check if that is a diving beetle larva. Weird looking though and need a better view of the head capsule. Does not look quite right for a hellgrammite though.
From this angle, it might not look quite right, but hellgrammites are the only group that has those double hooks on the hind prolegs – none of the beetles have hooks at all and the caddisflies only have a single hook on each proleg. This shot was taken from a strange angle as it was moving around inside that jar quite a bit when I was photographing it. You wouldn’t have any doubt if you saw the rest of it!
The Dragonfly Woman 
Might want to check if that is a diving beetle larva. Weird looking though and need a better view of the head capsule. Does not look quite right for a hellgrammite though.
From this angle, it might not look quite right, but hellgrammites are the only group that has those double hooks on the hind prolegs – none of the beetles have hooks at all and the caddisflies only have a single hook on each proleg. This shot was taken from a strange angle as it was moving around inside that jar quite a bit when I was photographing it. You wouldn’t have any doubt if you saw the rest of it!