Hello. This is likely an obvious bug, but I've looked at every likely candidate on the U of M Extension site and cannot make a match. They are showing up on the concrete by my front door when the sun is out and the temperature has gone up past 75. Six to seven at a time, most are dead or dying. This is a photo of one that was still moving. My suspicion is that they are harboring some place that is getting very hot when the sun is out but I cannot find that someplace. They are not obviously coming out from the ceiling above my front door or the siding or along the foundation (slab foundation - no basement or crawl space). Thanks in advance for your assistance. We just moved into this townhouse last July and I do not want to find an infestation of anything but we need to know. Steve Braun, Rochester, MN