“Do you know what this worm is?” asks this reader about the black and gray-striped worm pictured below. “We found it on our dining room floor. Pasadena, CA. Thank you!” To start with, we want to compliment our reader on the excellent photo. If it were not for our reader capturing the detail of the worm’s striking stripes and long body, we might have mistepped and identified this worm as something completely different. With that said, we think our reader found a pheretima earthworm.