Acraga Coa are from the Dalceridae family, found in southern Mexico, Belize, Honduras, Guatemala, El Salvador, Costa Rica and Panama, obviously preferring a more tropical climate, so unless you like to live in damp hot conditions - this isn't your kind of pet. The Dalceridae family consists of at least 84 different species, all of their larvae sharing the gooey appearance so they're often called "slug caterpillars".
The amazing semi-translucent caterpillars actually don't have any defence mechanisms, except for their gooeyness. Ants, which usually devour caterpillars, become stuck in the larvae's jelly-like body. So it seems the species repel predators simply by being sticky and uncomfortable to attack. In this sense, "Jewel" caterpillar does seem fitting - look all you want, but don't touch.