3.5x5 inches. Gouache on watercolor paper.
 
The nice thing about Vanessa doing the Strada Easel Challenge is that she is finding all sorts of fun stuff to paint! She bought some fun shiny bugs for reference, and that means I will probably paint them all too. So if you see her post a painting of this beetle, just remember where you saw it first ;P
 
In case you were curious, this is a chrysophora chrysochlora, aka a shining leaf chafer beetle.