Brachypogon (Brachypogon) laneae Swanson and Grogan, new species is described from the Mobile—Tensaw Delta of Alabama, and additional collection localities are provided from Florida. A second species of Brachypogon (Brachypogon) Kieffer from Florida is described, but not named, based on a single male and a tentatively associated female. Brachypogon (Brachypogon) woodruffi Spinelli and Grogan is reported for the first time from Florida and the Cayman Islands, and the male terminalia are re-illustrated to depict certain diagnostic features. An identification key is provided for males and females of the subgenus Brachypogon in North America north of Mexico.