I have to disagree this time not that I am an expert, but all of the Exochumus have some kind of spots on them. This Ladybird had no spots. It was a solid metallic hue. Plus the two orange areas on each side of the face. Unless there are varitions of Chilocorini that are not shown in the Guide???

There is one introduced species of Exochomus that is solid metallic green with the sides of the pronotum yellow. It is Exochomus metallicus. The problem here is that it is described as being pubescent, oval, and not strongly convex. Your specimen looks much like Halmus chalybeus, in that it is metallic blue hairless, rounded, and strongly convex. The yellow sides of the pronotum is much more prominent in your specimen than what I am used to in California. It is another introduced species (Australia) that was brought into the USA for scale control. I'm not sure of the full range of color variation that might exist in the Australian population.

I did some more searching through my literature and have to agree with your original assessment. Also there are some excellent picture of the species on the internet from Hawaii. Gordon lists it as ocurring in Mexico, but not the USA. It has probably been introduced for biological control purposes.

i'm more familiar with the palearctic fauna, where E. n i g r o m a c u l a t u s (like the one seen here or here) and other similar species are quite common -- thus the suggestion

which has been known in Florida for at least the last 10 years. It's also in the Guide at .