Calosoma peregrinator
Calosoma peregrinator, the traveling caterpillar hunter, is a species of ground beetle in the subfamily of Carabinae. It was described by Félix Édouard Guérin-Méneville in 1844. This species is found in Mexico and the southern United States, where it inhabits grasslands and pastures.
Adults overwinter in cavities in the ground and prey on caterpillars.