2009 article, but should still hold true
"Call it coincidence, but the snout nosed butterflies and army worms are not the same animal. Snout nosed butterflies emerged a month or so ago with avengence and have been seen around town since. They seem to prefer native grasses to find pollen, but are considered benign insects. Army worms just so happened to explode around the same time. Many people have confused the two for the same species, but they are very different."
https://bexarento.blogspot.com/2009/11/snout-nosed-butterflies-and-armyworms.html