By carefully cross-referencing between the chaetotaxy diagrams in Figs. 2.65 and 2.66 of the MND(1) and all three of the images in this series (different perspectives helped locate basal positions of setae) I'm fairly confidant this specimen has:

      2 notopleural setae;
      8 scutellar setae;
      3 anepisternal setae (the lowest one obscured in the dorsal image);
      3 supra-alar setae;
      3 post-alar setae;

From Shannon (1924) and Hull (1942), the 2 notopleural and 8 scutellar setae...together with the yellow legs; and arista yellow with black tip and longer than antenna...all point to F. dives here. All (nearctic) species of Ferdinandea except croesus are supposed to have the posterior margins of the 2nd and 3rd tergites darkened...which appears vaguely so here (perhaps somewhat faded with age in the specimen?).

Moreover, in the catalog of Stone et al.(2), F. dives is the only species listed for Missouri.

So this appears to be F. dives. But it seems the F. dives may now be in synonymy with F. buccata (see this ITIS listing and the comment regarding recent work of Thompson and Skevington mentioned here).