6050 Toronto, our home backs onto the Rouge Park ravine. This little guy was on our sliding glass door. Bonnie
This is a stink bug (Hemiptera/Heteroptera: Pentatomidae); it appears to be the species Banasa dimidiata see https://tinyurl.com/ycgkje77 for an image and more detailed information. Ed Saugstad, retired entomologist; Sinks Grove, WV.