Also called the 'Largus' bug
A Largus Bug in the Butterfly Weed flowers
Largus Bug - August 2006
Somewhat closer side-view. August 2006
This is the nymph of the Largus Bug
Largus Bug nymph
Another view of the nymph
Nymph - Largus
Bordered Plant Bug (Largus succinctus). This nymph is black on it's dorsal side, with a small bright rust red spot on its pronotum and larger round spot on its abdomen.
Adult and nymph Largus bug, on my zucchini plant
I had to kill it to take picture but not badly damaged.