A very helpful reader wrote to us in reference to an article we published last year. It was an article about what a curious reader thought was a worm, but was in fact probably a caterpillar based on the physical description we were sent. The caterpillar was long, thick, and spiky. It was also primarily black, although the caterpillar had white dashes on its body and an orange stripe down its back. The reader who more recently wrote to us sent us a picture of what seems like the same caterpillar. We didn’t have a picture of the spiky caterpillar in the old article, so the reader sent us one. Thanks!