answered question 8/28/2008 What Bug Is Flat And Grey? It Looks Like A Piece Of Cement Moving. Fingernail Length And Kind Of Diamond Shaped. They Are On My Lanai. I just looked it up because I found them on the kitchen floor.They're case-bearing moth larva. Check it out on google image. At least, that's what the ones I've got look like. Kind of gross little things, aren't they?
