This appears to be an uncommon species in Vermont that can at least occasionally be identified from photos. Many iNaturalist records are from Common Milkweed.
Identification: Females are entirely shades of black and white, lacking the browns and oranges of most other species.
Vermont Status: Not Ranked
For more information, visit the following links:
Living Atlas Species Page
Distribution: To see the global distribution, check out the iNaturalist account, and toggle the GBIF layer on the map.