Very difficult to separate Stenotus binotatus from Ilnacora malina. Actually, moving to that guide page instead.

I couldn't find an image of Ilnacora malina on the Internet, but I did come across a copy of Uhler's original (1877) description of the species (called Sthenarops malina at the time). On pages 8 & 9 of the PDF doc, at least four features are mentioned that can be seen in Tom Murray's photo, but are lacking or different in the above image:
- middle of cranium with a roundish large black shield
- pronotum... yellow anteriorly
- pronotum... with a large round black spot each side
- scutellum... with a slightly depressed black spot near the middle at base, from which a blunt faint carina runs backward to the tip

In my photo, the middle of the cranium is green, and the spots on the pronotum are shaped like elongated semicircles with a straight edge anteriorly, as shown in the photos of Stenotus binotatus here. Also, the scutellum has no black spot, and the pronotum is not yellow anteriorly. Other markings in common with S. binotatus include a black border on either side of the scutellum, two oblique dark streaks on each hemelytron (with the more distal streak extending to the inner angle of the cuneus), an unmarked cuneus, and overall pale coloration. Uhler described malina as "deep green", which fits the appearance of the bug in Tom's photo but I don't think it applies to the above image.

to Stenotus binotatus page, as per the similarities with that species, and the visible differences from Ilnacora malina, listed in my previous comment