I found several of these very small bugs around my house last fall and feel quite certain that they are Triatoma nymphs. I squished one of the more bloated looking ones I found and it left a bright red blood stain on the tissue -- unfortunately it was probably a recently ingested meal courtesy of my beloved cage-free house rabbit. I remove at least a couple of adult conenose bugs from inside the house each year, but I have yet to attempt photos of one... We live in a really old cabin in the middle of a lot of wilderness, so I would not be at all surprised if there are wood rats living near or underneath the house.