CLOSED: Some kind of leaf-turning/cutting slug?

Brooksville, FL(Zone 9a)

These things get on my Canna's every year and cut pieces of the leaves and turn them over, sticking them together and hiding inside. I don't know if they actually eat the leaves or just use them as a home. I have hesitated killing them because I don't know what they are or if they turn into something good (better than a slimy slug that cuts my leaves!) - like tomato worms turn into beautiful hawk-moths. Does anyone know what this is and if it turns into something in another life?


Thumbnail by onalee
Brooksville, FL(Zone 9a)

Here's another pic of it.

Thumbnail by onalee
Deep South Coastal, TX(Zone 10a)

Those are leaf rollers, a pain for canna growers! As far as I know, they aren't good for anything except food for birds! Sprinkle some Dipel around the cannas to kill them.
They do make a plain brownish butterfly that lays more eggs to eat more holes in your cannas.

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