I had applied for a test permit to see if I could get a letter from the USDA/aphis of "No Jurisdiction" to ship spixi. My permit to ship to a cold-weather state (New York) was denied. The only conclusion I can draw is that you are no longer able to ship spixi across state lines now as you can not get a permit for them. They are considered plant eaters and have been known to cross with marisias (another plant eater). Just thought I'd pass along this warning to the US residents.
Suz