“Can you identify this fast-moving, worm-type bug?” asks this reader in California who found such a bug on her white linen bed sheet when she was making the bed. The bug is brown in color, with six legs, antennae, and a pair of pincer-like appendages at its long, segmented rear.

“Do they affect humans in any way?” asks this reader about a mystery worm or creature that is left unnamed. “Will they crawl into your mouth or ears?”