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This small tubular bag worm like structure moves daily attaching itself at one end. After placing a damp tissue and various leaves in the container, a larval form seemed to have come out of the bag. I am not sure if the green bug near it came from it, but my neighbor did say she smashed a small green insect before seeing the tube.
I appreciate your interest.
Looks more like a case-bearing beetle larva than a caterpillar, but image not clear enough to tell. The green insect is unrelated, may be a leafhopper nymph.
Hard to tell since it was not found on any likely food item. If it is a beetle larva, it will be a leaf feeder; if it's a caterpillar, could be just about anything organic...