Great Leopard Moth, Hypercompe scribonia (Stoll, 1790)

I happened upon this Giant Leopard Moth (Hypercompe scribonia Stoll 1970), while walking around the property this evening. This species is a rare sight. It appears it was emitting defensive chemicals. . .as it was caught on the fence by a rainstorm. I know little about these species. What I do know is below the second photo.

Below, a shot with my index finger for scale.

Hypercompe is a genus of moths of the family Arctiidae. There are over 80 species found throughout the Americas. Several species were formerly separated in Ecpantheria which is now regarded as a junior synonym. They are typically large moths with white forewings heavily spotted with black, and brightly-colored abdomens which are exposed when the moth is threatened. This is a form of aposematism; they produce copious amounts of foul-smelling defensive chemicals, which they ooze from special points of weakness on the thorax, to discourage would-be predators.