In addition to the elytra pattern, the entirely pale head and narrowly pale anterior margin and anterolateral angle on the pronotum make this a male of B. querceti.

Gordon's(1) image and description of B. schwarzi show a male pronotum where the apical margin of the anterior margin is uneven. See image here:
http://www.discoverlife.org/20/q?see=I_JEL1402&res=md

Female B. schwarzi are somewhat similar to male B. querceti, with pale markings on the pronotum and head, but they lack the pale anterior margin and the head is black with pale frons only.

The color of your beetle is a good match for Gordon's description of B. querceti, too: he calls the elytral markings orange, but those of B. schwarzi are yellow. (I think his colors tend to be off, and "orange" can include "red" - he worked mainly from specimens, and over time the colors can change or fade.)

Thanks, Abigail, for the ID and all the interesting additional info. I thought the brilliant turquoise eyes were limited to the Hyperaspis. Glad you knew better! I did note that in Gordon's key he described the differences in the basal elytral spots of the two species as "base of elytron with one apparent spot in B. querceti, 2 partially divided spots or one large spot with ragged posterior margin in B. schwarzi." Note in the lateral view of my beetle there is a ragged posterior margin to the basal elytral spot. Also, based on the illustrations in the key, the positioning of the spot--running from the lateral ventral margin to the midline of the elytron--seems to me to fit schwartzi better than querceti. What do you think?

I considered the ragged margin on the basal spot for quite a while, but your beetle's spot is smaller and doesn't come as close to the suture as on B. schwarzi. It's a close call with the elytra alone, but the pronotum is perfect for B. querceti and doesn't match the image and description of either sex of B. schwarzi.

It's often the case that the markings and colors of the head and pronotum are more consistent than those of the elytra - they're one of the most reliable external features for coccinellids. When in doubt, I usually go by the pronotum.

Brachiacantha and Hyperaspis are the only genera with blue eyes. Just gorgeous little insects, and your photos of this one really show him to his best advantage.

Thanks again, Abigail, for the detailed explanation. In the future, I'll remember "when in doubt...go by the pronotum"!

I believe there's at least one more genus (albeit atypical)

At least the subfamily's consistent with my insufficient statement :-) I guess when I see a metallic blue beetle, the dorsal color makes more of an impression than the eyes!

I should keep in in mind, though, then I wouldn't have to remember where the orange spots are on the scymnine and chilocorine blue ladies.

It looks like O_lla also has blue eyes, I was just checking some of those out. They're in subfamily Coccinellinae. So just totally ignore anything I said about blue eyes being limited to scymnines! Clearly I have many lady beetle eyes to study before I make statements like that again.

I will say that the scymnines have the brightest-blue eyes - brilliant turquoise and sapphire. So they stand out a lot more than on other species.