The Long-horned Slug Moth is typically 0.7 inches to 0.8 inches (18mm to 22mm) in size and has the following descriptors / identifiers: snail, spikes, knobs, spines, patches, flying, tan, white, green, red, purple, yellow.
Territorial Area Map (Visual Reference Guide)
The map below showcases (in blue) the states and territories of North America where the Long-horned Slug Moth may be found (but is not limited to). This sort of data can be useful in seeing concentrations of a particular species over the continent as well as revealing possible migratory patterns over a species' given lifespan. Some species are naturally confined by environment, weather, mating habits, food resources and the like while others see widespread expansion across most, or all, of North America.