A small and fairly common emerald found primarily (but not entirely!) in early summer throughout much of Wisconsin. It has (1) a dark brown thorax with metallic green luster and NO yellow side stripes, (2) no pale spots on the dark abdomen, (3) a thin and complete yellow ring at the base of the abdomen between segments 2 and 3, and (4) a cross-vein in the forewing triangle. The most likely confusion species is Racket-tailed Emerald (D. libera), which has a wider "club," thicker and broken yellow ring at the base of the abdomen, and no cross-vein in the forewing triangle.