My daughter is seeing these in her apartment. They don't move much at all, light and sound don't phase them, and they don't move if she smacks the wall right by them. They are fairly small - my daughter was afraid it was a cockroach, but I told her no, since light and sound don't phase them. Any info would be helpful - I just don't know a good way to search for bugs on the web. This is a pic she took - they tend to be found on her wall.