Update 5-8-2020
I'm happy to report that on May 3rd, 2020, I once again became a Camponotus keeper. After many weeks of below average and rainy weather, it finally hit 78 degrees in Alexandria with calm winds and high humidity. I knew I needed to be on the lookout, so I decided grilling our dinner outside was a great way to do this. Sure enough, Camponotus queens started landing near me around 6:00pm. Over the course of an hour, I managed to find one C. chromaiodes, one C. subbarbatus, and one C. nearcticus. Several alates flew off before I could snag them.
After dinner, I went out walking near a railroad, but found nothing. Once I got home, though, I found a dealate C. chromaiodes and a dealate C. subbarbatus. My brother also managed to find me C. chromaiodes queen at the Washington Sailing Marina! I put up all the queens in test tubes with a drop of Sunburst and am hoping for the best. I'm most excited about raising some micro-Camponotus, and I promise not to sell all my queens this year!