I just wrote up a long post and the form expired, so I lost it all.
Previous owners wife died (natural causes) in the house about 15 year ago. I've lived here about 7 and other then an occasional strange noise that I don't pay much attention to, I've had maybe 1 or 2 unusual experiences.
The camera is in an enclosed area. Weather has been dry (no water on lens) and I hardly ever get moths in this room.
I have motion detection on between 2330 and 0600, and these are captured consistently between 0100 and 0330, and I'm not a big fan of coincidence.
I've done tests with people walking by and there is hardly any light trail, which tells me the shutter speed isn't that slow.
I also think this is probably some usual thing that causes this type of anomaly, but insect trails tend to be thin and not that bright. Also, some of these have such unusual patterns that I just had to get other's opinions.