Definitely not a roach. The big guy is about ¼" long and amazingly tolerant of nearby disturbances. Blowing on them did nothing and they didn’t seem to care when I slid my measuring tape right up along side.
The really strange thing is, there are three pairs , each in the same big/small configuration and spaced about 18" apart from each other in the shape of a triangle. It’s like some bizarre motionless father-son dance.
Are the small ones mobile? It looks to me in the photo that what appears to be the small individual is actually the shed skin of the larger individual. So that would explain why they are in pairs, if three individuals all shed their skins at about the same time.
OK thanks. They are still on the wall; only the large ones have moved a few cm from their original positions. I am going to dump them out in the garden where they will be free to suck on whatever they want.
Interesting. No wonder the little ones haven’t moved.
The thing at the top of the first picture looks like a dead spider. I agree that the other thing is a true bug - these aren’t bugs that prey on spiders are they?
Given the similarity between the conformation of the legs, and from the other information provided by Patty, I’m quite sure that the upper “thing” is the shed skin of the lower insect. This particular species is a member of a plant-eating family, not a predaceous one. It feeds on the seeds of strawberries and other plants.