About Chlaenius aestivus Say, 1823
Chlaenius aestivus Say, 1823 is a large species of ground beetle that has orange legs. Like other members of its genus, it has an iridescent thorax and head. Its black elytra are marked with distinct grooves, and its thorax is covered in dense punctures. This species can be told apart from similar related species by its antennae: its third antennomere is longer than the combined length of the first and second antennomeres, and also longer than the fourth antennomere. During the day, this beetle is most often found under rocks, logs, and other debris in moist locations such as muddy bottomlands.