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.

Similar Species:

Global Status:

Vermont Status: Not Ranked

 

For more information, visit the following links:

Discover Life
Living Atlas Species Page

 

Distribution: To see the global distribution, check out the iNaturalist account, and toggle the GBIF layer on the map.