The Black Setwing (Dythemis nigrescens) is a striking dragonfly in the family Libellulidae, commonly referred to as skimmers. Known for its dark coloration and perching behavior, this species is a common sight near water bodies in its range. Males are territorial and defend their preferred perching spots near water. Females lay eggs by dipping their abdomen in the water while in flight, often under the guard of a nearby male.