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The case is made of pieces of Caribbean pine needles and silk, and can reach a length of 13 cm. The caterpillar itself is black and yellow, at least at the front end.
I found these bags in and around my yard in Kourou, mostly attached to the fence. They were there year round and very common.
These are scans of paper photos I took in the 1990s. Any help with the ID would be appreciated.