Fun story, my wife and I had bat bugs at an apartment several years ago - they look identical the naked eye and the panic that sets in when you see them is real

Fun story, my wife and I had bat bugs at an apartment several years ago - they look identical the naked eye and the panic that sets in when you see them is real! An entomologist or even just someone who knows what they're looking for with a microscope can accurately identify them separately from bed bugs by the tiny hairs on their thorax. Luckily bat bugs aren't NEARLY the pest that bed bugs are - they really only like to eat bat blood and typically only show up when there are bats around, finding their way haphazardly toward anything else when bats are unavailable for food. This also means that I'm acutely aware that number 4 was the right answer.